What are 3 examples of making diluted solutions in "regular" life?
what are examples of diluted?
Answer:
Do it your self bro
Explanation:
You lazy bum do it yourself
What types of reactions take place in hot packs and cold packs? What evidence shows that
both hot packs and cold packs experience chemical reactions? Drag and drop the text into
the correct boxes.
Answer:
reaction to cold pack: change in temperature
Evidence of a chemical reaction etc is change in composition
Explanation: composition is atoms changeing and etc, which is a chemical reacton i think. Change in temperture is alsoa chemical reaction but cold packs
Answer:
Cold pack: absorbs heat (endothermic reaction)
Hot pack: releases heat ( exothermic reaction)
Explanation:
when a cold pack/hot pack is shaken, water mixes with the chemicals in the outer layer and reacts to release or absorb heat.
match these items. three-dimensional bonding, hardest natural substance, used as lubricant, nonconductor, weak planar bonds, carbon black or soot
Answer:
1. three-dimensional bonding
Diamond
2. Hardest natural substance
diamond
3. Used as lubricant
Graphite
4. nonconductor
Diamond
5. Weak, planar bonds
Graphite
6.Carbon black or soot
Amorphous
Explanation;
sorry im late, hopefully this can help somebody :)
Which of the following questions would assist a student to differentiate between Earth’s major biomes?
A. Does the biome receive high levels of precipitation?
B. Does the biome consist of more plants than animals?
C. Does the biome consist of biotic and abiotic factors?
D. Does the biome consist of organisms with adaptations for survival in the biome?
Answer:
a
Explanation:
does the blome receive high levels of precipitation
Answer:
A.Does the biome receive high levels of precipitation?
Explanation:
How do some insects take advantage of the surface tension of water?
what determines the identity of a substance?
proton
neutron
electron
photon
Answer:Typically, the identity of a substance can be described by a: chemical name, for example, benzene; number, for example, EC number 200-753-7, and.
Explanation:chemical composition, for example, >99 % benzene and <1 % toluene. The composition is determined by chemical analysis.
Answer:
proton
Explanation:
thats what my bio teacher just said
Which of the following will conduct electricity?
Question 9 options:
A) Acid solutions only
B) Base solutions only
C) Acid solutions and base solutions
D) Neither acid solutions nor base solutions
Answer:
I think is c
Explanation:
I hope this helps you
Answer:
Acid solutions and base solutions
Explanation:
How would the intensity of light from the bulb change if you were to: a) Dissolve some additional CuSO4(s) in the CuSO4 solution?
Answer:
The intensity of the light bulb increases
Explanation:
The conductivity of a solution depends on the concentration of ions in solution. This implies that, if the concentration of ions in solution is increased, the conductivity of the solution increases accordingly.
If we add more CuSO4(s) to the CuSO4 solution, the concentration of ions in the solution and consequently the conductivity of the solution increases.
Therefore, the intensity of the light bulb increases.
The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide
(Mgo)
2Mg + O2 → 2Mgo
The molar mass of Oz is 32.0 g/mol. What mass, in grams, of Oz is required to react completely with 4.00 mol of Mg?
2.00
64.0
128
256
Answer:
64
Explanation:
B
how do you start a hypothesis in science which includes scientific words and information which is on how much sugar can dissolve in water using the temperature of the solvent which is the water?
Answer: If ... Then... Because...
Explanation: if I water this plant twice a day then it will grow 3 feet because the more water it gets the bigger it grows
How many grams of CO2 are produced from 6.7 L of O2 gas at STP?
13 g CO₂
General Formulas and Concepts:Chemistry
Atomic Structure
Reading a Periodic TableMolesSTP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Using Dimensional AnalysisMath
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right Explanation:Step 1: Define
Identify variables
[Given] 6.7 L O₂
[Solve] g O₂
Step 2: Identify Conversions
[STP] 22.4 L = 1 mol
[PT] Molar Mass of O: 16.00 g/mol
[PT] Molar Mass of C: 12.01 g/mol
Molar Mass of CO₂: 12.01 + 2(16.00) = 44.01 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 6.7 \ L \ O_2(\frac{1 \ mol \ O_2}{22.4 \ L \ O_2})(\frac{44.01 \ g \ O_2}{1 \ mol \ O_2})[/tex][DA] Divide/Multiply [Cancel out units]: [tex]\displaystyle 13.1637 \ g \ O_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
13.1637 g CO₂ ≈ 13 g CO₂
What is the SUM of the coefficients for the balanced chemical equation below?
PLEASEEEE
A sample of gas at 53.0 oC and 1.19 atm occupies a volume of 2.3 L. What volume would this gas occupy at 107 oC and 0.60 atm?
Answer:
[tex]V_2=5.32L[/tex]
Explanation:
Hello there!
In this case, according to the given pressure, temperature and volume, it is possible for us to calculate the final volume via the combined ideal gas law:
[tex]\frac{P_2V_2}{T_2}=\frac{P_1V_1}{T_1}[/tex]
In such a way, we solve for the final volume, V2, to obtain:
[tex]V_2=\frac{P_1V_1T_2}{T_1P_2}[/tex]
Then, we plug in the given data to obtain:
[tex]V_2=\frac{1.19atm*2.3L*380K}{326K*0.60atm}\\\\V_2=5.32L[/tex]
Regards!
Question 6
6.7 pts
A solution has a very high electrical conductivity, turns litmus paper red and has a pH of 2.0. This is most likely
a(n)
Base/Strong Electrolyte
Acid/Weak Electrolyte
Acid/Strong Electrolyte
Base/Weak Electrolyte
Next
« Previous
Answer:
Acid/String Electrolyte
Explanation:
Litmus paper turning red means it is an acidic solution. A pH of more than 7 is Base while pH of less than 7 is an acid. Since the pH is 2, less than 7, it s is an acid. Since it has a high electrical conductivity, it must be a strong Electrolyte.
calculate the ph of a solution having [OH-] = 8.2 x 10 ^-8M
Answer:
6.91Explanation:
To find the pH we must first find the pOH
The pOH can be found by using the formula
pOH = - log [ {OH}^{-} ]
We have
[tex]pOH = - log(8.2 \times {10}^{ - 8} ) \\ = 7.086186...[/tex]
pOH = 7.09
Next we use the equation
pH = 14 - pOH
We have
pH = 14 - 7.09
We have the final answer as
6.91Hope this helps you
How simple machines make our works easier and faster (Question answer) (Class-6)
A sodium nitrate solution was prepared in the lab to have a concentration of 0.467 M. If 50. mL of a 6.00 M stock solution was used to prepare this sodium nitrate solution, what volume of water was added to the original 50. mL of stock solution? Provide the appropriate units (mL or L) to your response.
the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .
Explanation:
1. If CO2 is being produced in the solution at a faster rate than H2CO3, is the rate of the forward or reverse reaction faster?
Answer:
I believe that it would be faster but the reaction would not happen immediately. It would take a long time for the effect to start kicking in but it will definitely speed up the process of CO2 being released into our atmosphere.
Explanation:
If CO₂ is being produced in the solution at a faster rate than H₂CO₃, then the rate of the forward reaction is faster.
What is the rate of a reaction?Rate of any reaction tells about the duration of the completion of reaction to produce products.
Given chemical reaction is written as:
H₂CO₃ ⇄ CO₂ + H₂O
In the question it is given that CO₂ is produced at the faster rate, and it is the product of the forward reaction. So, we conclude that rate of forward reaction is faster.
Hence, the rate of forward reaction is faster.
To know more about rate of a reaction, visit the below link:
https://brainly.com/question/7694417
Name the following hydrocarbon:
Br
Br
A. 1,3-dibromopentane
B. 2,4-dibromoethane
C. 1,3-dibromoethane
D. 2,4-dibromopentane
List 3 examples of mixture and state why it’s a mixture. Help me.
Answer:
m&ms, cus you can tell they're different but they can also be separated. salad because you can pick pieces of it out and it's made from different things, chocolate chip cookies cus you can take the chocolate chips out (or oatmeal raisin cookies)
A balloon has a volume of 1.40 L at 24.0ºC. The balloon is heated to 48.0°C. Calculate the new volume of the balloon.
A 1.50 L
B 2.10 L
C 1.70 L
D 1.80 L
Answer:I am not sure how
Explanation: sorry free trial
Which organism in a food web would be best described as a recycler?
O A.
Cottontail rabbit
B.
Termite
C.
Fungi and bacteria
D.
Red fox
C,
takes dead things, makes them into other things
3. A PS6 plugged into a 120 V outlet uses 3 Amps. What is the Resistance rating of
the power cord?
voltage: V=
current: 1 =
resistance: R=
V=IxR
1=VR R
Underline/Bold Which Equation we are going to use:
= V
Plug in the numbers from above and solve for our answer:
Answer:
R = 40 ohms
Explanation:
Given that,
The voltage of outlet, V = 120 V
Current flowing through the device, I = 3 A
We need to find the Resistance rating of the power cord. Let the resistance is R. We know that,
Ohm's law, V = IR
Put all the values,
[tex]R=\dfrac{V}{I}\\\\R=\dfrac{120}{3}\\\\R=40\ \Omega[/tex]
So, the resistance rating of the power cord is equal to 40 ohms.
one should know properties of constituents of a mixture to separate the mixture .Why?
Answer:
Because: The mixtures contain unwanted substances which may be harmful and may degrade the properties of mixtures. So we, need to separated them and extract useful substances.
Answer:
The composition of the mixture is very important, as a result of nature exists solely by its properties, and also the reactions may be separated.
2CO +02 2CO2 what is the mole ratio of carbon monoxide to carbon
dioxide
A 1.2
B 2.2
C 2:1
D 3:1
Answer:
B 2:2
Explanation:
Mole ratio is the comparison of the ratio of two compounds or elements in a chemical reaction. In a balanced equation, the moles of a particular compound or element is written as a coefficient. This means that mole ratio is the ratio of the coefficient of two substances in a reaction.
In this balanced chemical equation given as follows:
2CO + 02 → 2CO2
The number of moles/coefficient of carbon monoxide (CO) is 2 while that of carbon dioxide (CO2) is 2.
Hence, the mole ratio of CO to CO2 is 2:2
How many moles of Fe₂O₃ are there in 0.54 liters of a 1.6 M solution?
Answer: 0.86 mol
This is a molarity problem, in which M is defined by:
[tex]\frac{n(moles of solute)}{v(liters of solution)}[/tex]and the units are moles/liter
With this information in mind, we can plug in M and v already so that:
1.6 [tex]\frac{mol}{L}[/tex]= [tex]\frac{xmol}{0.54L}[/tex] of Fe₂O₃
If we multiply 0.54 L from both sides, we will get:
0.864 mol = x mol of Fe₂O₃
Rounding that to sigfigs, we get that the number of moles within this Fe₂O₃ solution is 0.86 mol; therefore, that is the answer.
I hope this helped!
5F248+ 2NH3(8) ► NF418 + 6HF
a) If you start with 3.6 g of NH, and excess F2, how many liters of HF at STP can you make?
Answer:
14.2L at STP
Explanation:
Based on the problem, 2 moles of NH3 produce 6 moles of HF. To solve this question we have to convert the mass of NH3 to moles. With the chemical equation find the moles of HF and using PV = nRT find the liters of HF:
Moles NH3 -Molar mass: 17.031g/mol-
3.6g NH3 * (1mol / 17.031g) = 0.211 moles NH3
Moles HF:
0.211 moles NH3 * (6mol HF / 2mol NH3) = 0.634 moles HF
Volume HF
PV = nRT; V = nRT/P
Where V is volume in liters, n are moles of the gas = 0.634 moles, R is gas constant = 0.082atmL/molK, T is absolute temperature = 273.15K at STP and P is pressure = 1atm at STP.
Replacing:
V = 0.634moles*0.082atmL/molK*273.15K / 1atm
V = 14.2L at STP
how could you get the crystals in a supersaturated solution back into the solution?
2. What is peat?
the aromatic compounds that are part of coal
O a soft, spongy material that may be changed into coal
O a mixture of methane, ethane, and other gaseous hydrocarbons
a very hard, dense form of coal
Answer:
a soft, spongy material that may be changed into coal
Explanation:
Methane (CH4) undergoes combustion. Which products form?
A. C and H20
B. CO2 and H20
O C. CO2 and H2
D. CO2, H20, and O2
Answer:
carbon dioxide (CO2) and water (H2O).
Explanation:
When methane burns in the air it has a blue flame. In sufficient amounts of oxygen, methane burns to give off carbon dioxide (CO2) and water (H2O). When it undergoes combustion it produces a great amount of heat, which makes it very useful as a fuel source. Methane is a very effective greenhouse gas.