Answer:
The correct answer is - increase Florida's average income per person.
Explanation:
Kennedy Space Center established by NASA helped the boosting economy of Florida. Spaceport operations in Kennedy Space Center benefit Florida by a total economic impact of nearly $4 billion on Florida's economy.
This space center helped in the 7,639 jobs in 2018 and 2019 and 37 new space operation companies. These jobs increased Florida's average income per person above $91,000.
What volume of water is required to prepare 0.1 M H3PO4 from 100 ml of 0.5 M solution?
Answer: A volume of 500 mL water is required to prepare 0.1 M [tex]H_{3}PO_{4}[/tex] from 100 ml of 0.5 M solution.
Explanation:
Given: [tex]M_{1}[/tex] = 0.1 M, [tex]V_{1}[/tex] = ?
[tex]M_{2}[/tex] = 0.5 M, [tex]V_{2}[/tex] = 100 mL
Formula used to calculate the volume of water is as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]
Substitute the values into above formula as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}\\0.1 M \times V_{1} = 0.5 M \times 100 mL\\V_{1} = 500 mL[/tex]
Thus, we can conclude that a volume of 500 mL water is required to prepare 0.1 M [tex]H_{3}PO_{4}[/tex] from 100 ml of 0.5 M solution.
Identify whether the following are dependent or independent clause
1. Because he cannot pick up our son
2. I am typing on the computer
3. They will have gone to Disney World
4. Before we arrive in Florida
Answer:
1. dependent clause
2. Independent clause
3. Independent clause
4. Dependent clause
Explanation:
In English language, there are two types of clauses (a group of words that contain subject and predicate) viz; independent clause and dependent clause.
INDEPENDENT CLAUSE is a clause that can stand alone to form a complete sentence, possessing a subject and a predicate.
On the other hand, a DEPENDENT CLAUSE cannot stand alone to form a complete and meaningful sentence, but instead depends on another sentence to make sense. It is often recognizable as they start with subordinating conjunctions such as while, because, when etc.
According to this question, the following are examples of independent and dependent clauses:
1. Because he cannot pick up our son - dependent clause
2. I am typing on the computer - independent clause
3. They will have gone to Disney World - independent clause
4. Before we arrive in Florida - dependent clause
What is the IUPAC name of the following compound?
Select one:
a. 4-methyl-3-phenyl-3-pentenoic acid
b. (Z)-3-methyl-2-phenyl-2-butenoic acid
c. 3-phenyl-2-methyl-2-penten-5-oic acid
d. 4,4-dimethyl-3-phenyl-3-butenoic acid
The image of the structure is attached in the image below.
Answer: The correct option is a.) 4-methyl-3-phenyl-3-pentenoic acid
Explanation:
Carboxylic acids are a type of functional group in organic chemistry that have the symbol '-COOH'. A suffix used for this functional group is '-oic acid'.
To name a compound, first look for the longest possible carbon chain.
As in the image attached below, the longest carbon chain has 5 carbon atoms. Thus, the prefix used will be 'pent-'
Also, a methyl substituent is present at the 4th position, a phenyl substituent is located at the 3rd position.
A double bond is also present at the 3rd position and a suffix '-ene' is used.
Hence, the IUPAC name for the given compound is 4-methyl-3-phenyl-3-pentenoic acid.
How many grams are in 3.7 moles of Na2O?
Answer:
mass = moles x molar mass
m= 3.7 x (23x2+16)
m= 3.7x62
m= 229.4g
198.4 grams are there is 3.7 moles of Na₂O.
The number of moles is defined as the ratio between given mass and molar mass.
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\\\\[/tex]
Given:
Number of moles= 3.7 moles
To find:
Mass=?
Molar mass of Na₂O= 62 g/mol
Thus substituting the values in the given formula
[tex]\text{Given mass}=\text{Number of moles}*\text{Molar mass}\\\\\text{Given mass}= 3.2 \text{moles}*62 \text{g/mol}\\\\\text{Given mass}=198.4 \text{g}[/tex]
Thus, 198.4 grams are there is 3.7 moles of Na₂O.
Learn more:
brainly.com/question/21911991
Once formed, how many valence electrons does an anion hold?
Answer:
Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.
What weight of barium chloride will react with 2.36g of sodium sulphate in solution so as to produce 3.88g of barium sulphate and 1.94g of sodium chloride in solution?
PLEASE give the answer faster
Answer:
3.46 g of BaCl2
Explanation:
The equation of the reaction is;
BaCl2(aq) + Na2SO4(aq) --------> 2NaCl(aq) + BaSO4(s)
Number of moles of barium sulphate produced = 3.88 g/233.38 g/mol = 0.0166 moles
From the reaction equation;
1 mole of BaCl2 yields 1 mole of barium sulphate
Hence 0.0166 moles of BaCl2 yields 0.0166 moles of barium sulphate
Hence;
Mass of BaCl2 required = 0.0166 moles × 208.23 g/mol = 3.46 g of BaCl2
Sample of 200mls of 0.5 sulphuric acid,was asked to produce 1.2M of the new solution.Calculate the volume of the new solution
Answer: The volume of the new solution is 83.33 mL.
Explanation:
Given: [tex]V_{1}[/tex] = 200 mL, [tex]M_{1}[/tex] = 0.5 M
[tex]V_{2}[/tex] = ?, [tex]M_{2}[/tex] = 1.2 M
Formula used to calculate the volume of new solution is as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]
Substitute the values into above formula as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}\\0.5 M \times 200 mL = 1.2 M \times V_{2}\\V_{2} = 83.33 mL[/tex]
Thus, we can conclude that volume of the new solution is 83.33 mL.
A Chemical Reactions Takes Place When
Answer:
A chemical Reaction Takes place when New bonds are formed between atoms to create new compounds
Explanation:
There are four signs that a chemical reaction has occurred: a change in color, a change in temperature, formation of a gas or formation of a precipitate. A precipitate is a solid that forms when two liquid solutions are mixed.
Walking on sand with your bare feet demonstrate what kind of heat transfer
Answer:
It would be conduction.
What is temperature?
Answer:
Temperature is a physical quantity that shows how hot and cold something is.
It is the sign of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy when a body is in contact with another that is colder or hotter. Temperature is measured with a thermometer.
34. Which type of reaction is represented by the
equation?
CH. + Biz - CH.Br + HB,
A suhstitution
C. esterification
D. polymerization
Answer:
Option A. Substitution
Explanation:
To know which option is correct, let us define each option. This is illustrated below:
A substitution reaction is a reaction in which an halogen replaces hydrogen in a hydrocarbon to produce alkyl halide and the corresponding acid. For example:
RH + X₂ –> RX + HX
NOTE:
R => is an alkyl group
X => is an halogen (F₂, Cl₂, Br₂ or I₂)
Addition reaction is a reaction in which two reactants combined to form a new compound without any loss of the reactants. This reaction is peculiar to only unsaturated hydrocarbon. For example:
CₓHᵧ + A₂ —> ACₓHᵧA
NOTE:
CₓHᵧ => unsaturated hydrocarbon (alkene, alkyne)
A₂ => halogen (F₂, Cl₂, Br₂ or I₂) or HBr, HCl etc
Esterification is a reaction involving carbonxylic and alcohol to produce ester and water. For example:
RCOOH + HOR —> RCOOR + H₂O
NOTE:
R => is an alkyl group
Polymerization is a process of reacting smaller molecules called monomers to form a larger molecule called polymer.
With the information provided above, we can see that the reaction:
CH₄ + Br₂ —> CH₃Br + HBr
Is a substitution reaction since Br replaces H in CH₄ to produce CH₃Br and the corresponding acid i.e HBr
One atom of chromium (Cr) has a mass of 52.00 amu. How many chromium atoms does it take to equal a mass of 52.00 g?
1 chromium atom
Explanation:
number of (Cr) atom =
[tex] \frac{mass \: of \: cr}{molar \: mass \: (amu)} [/tex]
n = m/M
n = 52/52
n= 1g
Which is a group of tissues that work together to carry out a common function?
cell
organ
organelle
organ system
Answer:
Organ as a group of tissues working together is an organ.
PLEASE HELP
Let’s say a colleague working in the lab needs to create a solution containing 97.9 grams of NaCl. If she has a 3.0 M stock solution of NaCl dissolved in water, how many liters of the stock solution would she need to have 97.9 grams NaCl? Remember the molar mass of NaCl is 58.44 g/mol.
Answer: There are 0.558 liters of the stock solution would she need to have 97.9 grams NaCl.
Explanation:
Given: Molarity = 3.0 M
Mass of NaCl = 97.9 g
Molar mass of NaCl = 58.44 g/mol
As number of moles is the mass of substance divided by its molar mass.
So, moles of NaCl are calculated as follows.
[tex]Moles = \frac{mass}{molar mass}\\= \frac{97.9 g}{58.44 g/mol}\\= 1.675 mol[/tex]
Molarity is the number of moles of a substance present in liter of a solution.
Therefore, volume of given solution is calculated as follows.
[tex]Molarity = \frac{moles}{Volume (in L)}\\3.0 M = \frac{1.675 mol}{Volume}\\Volume = 0.558 L[/tex]
Thus, we can conclude that there are 0.558 liters of the stock solution would she need to have 97.9 grams NaCl.
which is generally more soluble in water ammonium chloride or potassium chloride explain
Answer:
Ammonium chloride
Explanation:
because is a salt which is highly soluble in water than potassium
During the synthesis of esters from carboxylic acids and alcohols, the carboxylic acid is often in excess to push the equilibrium towards the products. This is because it is easier to separate the acid from the product. Describe a method to separate an ester from a carboxylic acid.
Answer: FRACTIONAL DISTILLATION separation method
Explanation:
The process by which esters are synthesized involves the reaction between a carboxylic acid and an alcohol. During this process, an excess of one of the reactants which is carboxylic acid is used. This helps to increase the rate of the chemical reaction thereby moving the equilibrium constant of the reaction towards the products.
Excess carboxylic acid mixed with the product of the reaction which is an ester can be separated using FRACTIONAL DISTILLATION separation method. This is a separation method that is used for separation of liquids with close boiling points. Example include components of petroleum, alcohol and water solutions, mixture of esters and carboxylic acids.
The process involves the introduction of a fractionating column between a flask and a condenser. The flask, which contains the impure mixture to be separated, is heated. The vapour of the liquids move into the fractionating column and they are cooled by the glass surface. The liquid with the higher boiling point (less volatile) condenses and falls back into the flask. While the one with the lower boiling point ( more volatile) distils over into the condenser and is collected as the first distillate. The esters has lower boiling point than carboxylic acids, therefore they are collected as the first distillate.
Select two compounds below that can be used to make a buffer solution. Aacetic acid Bformate ion Csulfite ion Dcarbonate ion Eacetate ion Fhydrogen sulfide
Answer: Two compounds below that can be used to make a buffer solution are acetic acid and acetate ion.
Explanation:
A solution that helps in resisting change in pH when a small amount of acid or base is added to it is called a buffer solution.
A buffer solution consists of a mixture of weak acid and its conjugate base.
Acetic acid has a chemical formula [tex]CH_{3}COOH[/tex] and its conjugate base is [tex]CH_{3}COO^{-}[/tex].
This base is also called acetate ion.
Acetic acid is a weak acid because it dissociates weakly when added to a solvent like water.
Therefore, acetic acid and acetate ion will form a buffer solution.
Thus, we can conclude that two compounds below that can be used to make a buffer solution are acetic acid and acetate ion.
Which statement about the relationship between laws, hypothesis, and theories is true?
The question is incomplete, the complete question is;
Which statement about the relationship between laws, hypotheses, and theories is true?
A.
Laws that remain true over an extended period of time are considered theories.
B.
A theory that holds true for a long time is considered a law.
C.
If a law is not contradicted after a lot of testing, it may be considered a hypothesis.
D.
If a hypothesis is not contradicted after a lot of testing, it may be considered a law.
Answer:
If a hypothesis is not contradicted after a lot of testing, it may be considered a law.
Explanation:
A hypothesis is an intelligent guess which is put forward to explain a particular scientific observation. Hypothesis are temporary explanations that must be subjected to rigorous scientific investigation.
If a hypothesis holds true for some time it is regarded as a theory. The theory is also subjected to further rigorous scientific experiments to see if it can be regarded as a law.
If the statement of the hypothesis is not contradicted after a lot of testing, it may be considered a law.
A spacecraft is traveling at a speed of 2.3 km/sec. It takes 2.5 minutes to pass a small asteroid. how wide is the asteroid (i.e., how far did the spacecraft travel during this time)? Use (distance) = (velocity) x (time)
Answer: The spacecraft traveled 345 km during the given time.
Explanation:
To calculate the distance of spacecraft, we use the equation:
[tex]\text{Velocity}=\frac{\text{Distance}{\text{Time}}[/tex]
We are given:
Velocity = 2.3 km/sec
Time = 2.5 mins = 150 sec (Conversion factor: 1 min = 60 sec)
Putting values in above equation, we get:
[tex]\text{Distance}=(2.3km/s\times 150s)=354km[/tex]
Hence, the spacecraft traveled 345 km during the given time.
Question 3 (4 points)
The concentration of hydroxide ions in a solution that has a poH of 6.0 is
a
10-6 M.
Ob
106 M.
Ос
101 M.
Od
10-8 M.
Answer:
a. 1.0 × 10⁻⁶ M (≈ 10⁻⁶ M)
Explanation:
Step 1: Given data
pOH of the solution: 6.0
Step 2: Calculate the concentration of hydroxide ions ([OH⁻]) in the solution
We will use the definition of pOH.
pOH = -log [OH⁻]
[OH⁻] = antilog -pOH
[OH⁻] = antilog -6.0
[OH⁻] = 1.0 × 10⁻⁶ M
Since [OH⁻] > 10⁻⁷ M, we can conclude that the solution is basic.
(c) If the student mixed 10 mL of distilled water with 10 mL of the sample, would this diluted solution have anabsorbance greater than, less than or equal to the absorbance of the original solution? Justify your answer.
Answer:
The diluted solution have an absorbance less than the original solution
Explanation:
As you can see in the graph, the absorbance of a substance is directly proportional to the concentration of the substance (Lambert-Beer law). That means a solution more concentrated than another will have an absorbannce greater than the more diluted solution.
In the problem, you are diluting the original sample by the addition of 10mL of distilled water, that means,
The diluted solution have an absorbance less than the original solutionHow/why is maintaining healthy soil a social justice issue for our area and community
Answer:
Social justice aims to give individuals and groups fair treatment and an impartial share of social, environmental and economic benefits. The concept promotes the fair distribution of advantages and disadvantages within a society, regardless of background and status.
Environmental justice deals explicitly with the distribution of environmental benefits and the burdens people experience, at home, at work, or where they learn, play and spend leisure time. Environmental benefits include attractive and extensive greenspace, clean air and water, and investment in pollution abatement and landscape improvements. Environmental burdens include risks and hazards from industrial, transport-generated and municipal pollution.
what is the molecular formula of something with an empirical formula CO that has a molar mass of 56g/mol ?
Answer:
C₂O₂
Explanation:
Step 1: Given data
Empirical formula: COMolar mass of the molecular formula: 56 g/molStep 2: Calculate the molar mass of the empirical formula
M(CO) = 1 × M(C) + 1 × M(O) = 1 × 12 g/mol + 1 × 16 g/mol = 28 g/mol
Step 3: Calculate "n"
We will use the following expression.
n = molar mass of molecular formula / molar mass of empirical formula
n = (56 g/mol) / (28 g/mol) = 2
The molecular formula is:
CO × n = CO × 2 = C₂O₂
STRONGEST METALL ON EARTH
Answer:
tungstun
Explanation:
Answer:
tungsten
Explanation:
strongest out of any natural metal (142,000 psi).
The graph shows a relationship between volume and temperature. Which of the following statements is true?
A.) The graph shows a directly proportional relationship between volume and temperature and represents Charles' Law.
B.) The graph shows an indirectly proportional relationship between volume and temperature and represents Boyle's Law.
C.) The graph shows an indirectly proportional relationship between volume and temperature and represents Gay-Lussac's Law.
4.) The graph indicates that when temperature is increased, volume decreases.
Answer:
The graph shows a directly proportional relationship between volume and temperature and represents Charles' Law.
Explanation:
The relation between volume and temperature is given by :
Ideal gas law, PV = nRT
Where
P is pressure
V is volume
R is gas constant
T is temperature
As volume and temperature have direct relationship. Charles law states that there is a direct relationship between volume and temperature. The correct option is (a).
Aqueous hydrochloric acid will react with solid sodium hydroxide to produce aqueous sodium chloride and liquid water . Suppose 12.8 g of hydrochloric acid is mixed with 7.0 g of sodium hydroxide. Calculate the minimum mass of hydrochloric acid that could be left over by the chemical reaction. Round your answer to significant digits.
Answer:
Mass of HCl leftover = 6.4 g
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
NaOH + HCl —> NaCl + H₂O
Next, we shall determine the masses of NaOH and HCl that reacted from the balanced equation. This can be obtained as follow:
Mass of NaOH = 23 + 16 + 1
= 40 g/mol
Mass of NaOH from the balanced equation = 1 × 40 = 40 g
Molar mass of HCl = 1 + 35.5 = 36.5 g/mol
Mass of HCl from the balanced equation = 1 × 36.5 = 36.5 g
SUMMARY:
From the balanced equation above,
40 g of NaOH reacted with 36.5 g of HCl.
Next, we shall determine the mass of HCl required to react with 7 g of NaOH. This can be obtained as follow:
From the balanced equation above,
40 g of NaOH reacted with 36.5 g of HCl.
Therefore, 7 g of NaOH will react with = (7 × 36.5)/40 = 6.4 g of HCl.
Thus, 6.4 g of HCl is required for the reaction.
Finally, we shall determine the leftover mass of HCl. This can be obtained as follow:
Mass of HCl given = 12.8 g
Mass of HCl that reacted = 6.4 g
Mass of HCl leftover =?
Mass of HCl leftover = (Mass of HCl given) – (Mass of HCl that reacted)
Mass of HCl leftover = 12.8 – 6.4
Mass of HCl leftover = 6.4 g
If I contain 3 moles of gas in a container with a volume of 60 liters and at a temperature of 400 K, what is the pressure inside the container in mmHg?
Answer:
n = 3.0 moles
V = 60.0 L
T = 400 K
From PV = nRT, you can find P
P = nRT/V = (3.0 mol)(0.0821 L-atm/K-mol)(400 K)/60.0L
P = 1.642 atm = 1.6 atm (to 2 significant figures)
Explanation:
Which diagram(s) represents the bonding pattern of
metals?
O A and B
O C and D
O A
ос
Answer:
C and D- Ionic bonding
B- Metallic bond
Explanation:
They show ionic bonding through which metals bond.
B shows metallic bonding
How many liters of water would you need to add to 4.36 moles of NaCl to create a 9.4 M solution?
Answer:
0.46 L
Explanation:
In order to solve this problem we need to keep in mind the following definition of molarity:
Molarity = Number of moles / litersWe now input the given number of moles and molarity:
9.4 M = 4.36 mol / litersAnd calculate how many liters are required:
liters = 4.36 mol / 9.4 Mliters = 0.46 LGiven the following: 30 grams of H3PO4, find the number of moles
Answer:
Number of mole of H₃PO₄ = 0.306 mole
Explanation:
From the question given above, the following data were obtained:
Mass of H₃PO₄ = 30 g
Number of mole of H₃PO₄ =?
Next, we shall determine the molar mass of H₃PO₄. This can be obtained as follow:
Molar mass of H₃PO₄ = (3×1) + 31 + (4×16)
= 3 + 31 + 64
= 98 g/mol
Finally, we shall determine the number of mole in 30 g of H₃PO₄ as follow:
Mass of H₃PO₄ = 30 g
Molar mass of H₃PO₄ = 98
Number of mole of H₃PO₄ =?
Mole = mass / molar mass
Number of mole of H₃PO₄ = 30 / 98
Number of mole of H₃PO₄ = 0.306 mole