Answer:
4.186 L
Explanation:
Using the pv=nrt equation and converting the grams of O2 into mols. After finding the number of mols by dividing 5.98 by 32 (2*the atomic weight of O) you plug that into the equation. So then you have 1*V=.186875*.08206*273 then you rearrange the equation to solve for v and get 4.186 L
What are the pros and cons of Traditional Energy?
Answer:
Advantages of Nonrenewable Energy. Less Initial Capital to Install. Consistency. Extraction and Storage. Reliable and Dependable.
Disadvantages of Nonrenewable Energy. Unfriendly to the Environment. Nonrenewable. They Are Unsustainable. Prone to Cause Accidents. The Spread of Weaponizable Materials
hopw this is helpful....
when high pressure is applied to a gas, its
Answer: volume decreases
how many moles are present in 332g of Ba(NO3)2
Answer:
The SI base unit for amount of substance is the mole. 1 grams Ba(NO3)2 is equal to 0.0038264798528183 mole.
Explanation:
a 5 g ice cube starts life at -1 C if 2182.5 j are added to it what will be the final temperature upon his demise ?
Answer:
Final Temp = 23.92°C
Explanation:
ΔH(total) = (m·c·ΔT)ice + (m·ΔH(f))melt'g + (m·c·ΔT)water
2182.5j = (5g)(2.092j/g·°C)(1°C) + (5g)(334.56j/g) + (5g)(4.184j/g·°C)(ΔT)
(2182.5 - 10.46 - 1672.8)j = 20.92j/°C·ΔT
ΔT = (2182.5 - 10.46 - 1672.8)j / 20.92j/°C = 23.92°C
Since the melting ice starts and ends at 0°C and is then warmed to 23.92°C then the temperature change is also the final temp of the water based upon given energy input values.
How does the strength of a metallic bond compared to other types of bonds?
a. metallic bonds are weaker than ionic bonds or covalent bonds.
b. metallic bonds are equal in strength to ionic and covalent bonds.
c. metallic bonds are weaker than ionic bonds but stronger than covalent bonds.
d. metallic bonds are weaker than covenant bonds but stronger than ionic bonds.
While metallic bonds have the strong electrostatic force of attractions between the cation or atoms and the delocalized electrons in the geometrical arrangement of the two metals. ... Metallic bonds are malleable and ductile, while covalent bonds and ionic bonds non-malleable and non-ductile.
Which statement describes the Arrhenius interpretation of acids and bases?
It has a wider range of applications than the Bronsted-Lowry interpretation.
It has a wider range of applications than the Lewis and Bronsted-Lowry interpretations.
It is used in situations that involve bases that do not produce hydroxide ions.
It is limited to situations that involve aqueous solutions or specific compounds.
Answer: Composition is an orderly arrangement of visual structures (elements and principles) to create a mood, add meaning and direct the viewers' attention to the purpose of the artwork. Compositions are said to be 'designed' according to the specific intent of the artist.
The statement that describes the Arrhenius interpretation of acids and bases is that it is limited to situations that involve aqueous solutions or specific compounds. Therefore, option D is correct.
What is Arrhenius's interpretation?Arrhenius's interpretation defined an acid as a substance that increases the concentration of hydrogen ions (H⁺) when dissolved in water and a base as a substance that increases the concentration of hydroxide ions (OH⁻) when dissolved in water.
According to Arrhenius's interpretation, when an acid is dissolved in water, it releases H⁺ ions, which then react with water molecules to form H₃O⁺ ions, also known as hydronium ions.
Similarly, when a base is dissolved in water, it releases OH⁻ ions, which then react with water molecules to form H₂O molecules and more OH⁻ ions. Thus, option D is correct.
Learn more about Arrhenius, here:
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Jimmie places a soccer ball on the ground and kicks it toward the goal. The ball moves along the ground toward the goal. Why does the ball move?
A. The kick decreases the weight of the ball.
B. The kick serves as a contact force on the ball.
C. The kick decreases the force of gravity acting on the ball.
D. The kick removes friction between the ball and the ground.
Answer:
D
Explanation:
Kicking the soccer muscles uses the foot muscle that is applied by mechanical force. The ball moves along the ground as the kick removes the friction.
What is friction?Friction is a resisting force that is encountered by an object or the surface when it moves along another surface. It occurs because the objector the surface slides against each other.
When the kick is applied to a ball lying on the surface then, the frictional force present between the ground and the ball is reduced so that the ball moves along.
Therefore, option D. the kick reduces or removes the frictional force.
Learn more about friction here:
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What does corona mean?
Answer:
.
Explanation:
chemistry:
plz help me:D
Answer:
1 atom only with the unit u.
Explanation:
The formula mass of a substance is defined as the sum of the atomic masses of all atoms in a formula unit of the particular substance in question.
Thus the correct answer is option A
define the word isotope
Answer:
Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.
Answer:
Isotopes are two or more types of atoms with the same atomic number but differing nucleon numbers due to varying numbers of neutrons in their nuclei.
OAmalOHopeO
Initially a NaOH solution was standardized by titration with a sample of potassium hydrogen phthalate, KHC8H4O4, a monoprotic acid often used as a primary standard. A sample of pure KHC8H4O4 weighing 1.518 grams was dissolved in water and titrated with the NaOH solution. To reach the equivalence point, 26.90 milliliters of base was required. Calculate the molarity o
Answer:
0.2763M NaOH
Explanation:
Based on the reaction of hydrogen phtalate, KHP, with sodium hydroxide, NaOH:
KHP + NaOH → KNaP + H₂O
1 mole of KHP reacts per mole of NaOH.
In the equivalence point, the moles of NaOH added = Moles of KHP that were dissolved.
Thus, to solve this question, we must find the moles of KHP = Moles NaOH. With the moles and the volume of NaOH required to reach the equivalence point we can find molarity of NaOH solution:
Moles KHP = Moles NaOH (Molar mass KHP = 204.22g/mol):
1.518g * (1mol / 204.22g) = 7.433x10⁻³ moles NaOH
In 26.90mL = 0.0269L:
7.433x10⁻³ moles NaOH / 0.02690L
0.2763M NaOHQuestion 10 of 10
After a person eats a sugary snack, his blood sugar levels may rise for a short
period of time. However, the body works quickly to return blood sugar levels
to normal. What is this an example of?
O A. Respiration
B. Homeostasis
C Ethics
D. Development
Mrs. Hillis runs 5.6 miles every evening. How far does she run in feet? (5,280 ft = 1
mile)
Answer:
29565 feet
Explanation:
multiply 5.6 by 5280
2) Silk is a kind of ....... fibre
a) semisynthetic b) synthetic c) Animal d) Vegetable
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: Animal fibre
I hope this helped!
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Answer: c) Animal
Explanation: It is a protein based fibre so classified as animal fibre. Vegetable fibers are cellulose based.
you may not want to wear a black shirt in the hot summer because light is
Answer:
The outer layer of fabric does get hotter because the black color absorbs more heat. And that heat doesn't get transmitted to the skin because of the thick fabric. But thin black clothing transmits that heat to the skin, making a person hotter.
Explanation:
what is the chemical combination of calcium cloride and aluminum
Answer:
Calcium chloride react with aluminum to produce calcium and aluminum chloride. This reaction takes place at a temperature of 600-700°C.
CaCl2+F2 -> CaF2 + Cl2
a scientist would like to investigate if temperature have an effect on pulse rate design an experiment to help her test the idea be sure to State the hypothesis that the independent variable State the dependent variable described as the experimental group will be different than the control group
Answer:
Answer without us!
Explanation:
You seem pretty smart and you can achieve anything!
You have an electrolyte that dissociates completely and conducts electricity well. What type of electrolyte would it be classified as?
Answer:
Strong Electrolyte
Explanation:
Electrolytes are classified into strong and weak electrolytes. Strong electrolytes are electrolytes that completely dissociate in an aqueous solution and are as well good conductors of electricity while weak electrolytes are those that are not completely dissociated in an aqueous solution and are not very good conductors of electricity.
Examples of strong electrolytes are strong acid, strong base, and salts. Examples of weak Electrolyte are weak acids and weak bases.
Thus the correct answer is strong electrolytes.
BRAINLIEST AWARD
If 4.04g of N combines with 11.46g O to produce a compound with a molar mass of 216.0 g/mol, what
is the molecular formula of this compound?
Please explain and show work thank you
We first set about determining the empirical formula of the compound. From the principle of mass conservation, we can assume that the empirical compound contains 4.04 g of N and 11.46 g of O.
We now convert the mass of each element into the number of moles by dividing by the molar mass.
(4.04 g N)/(14.0067 g/mol) = 0.2884 mol N
(11.46 g O)/(15.999 g/mol) = 0.7163 mol O.
To find the empirical formula, we divide each molar quantity by the smaller of the two. That would be the number of moles of nitrogen.
(0.2884)/(0.2884) = 1
(0.7164)/(0.2884) = 2.48 ≈ 2.5.
To make both whole numbers, we multiply each numeral by 2:
(1)(2) = 2
(2.5)(2) = 5.
So, the empirical formula of our compound is N₂O₅.
To find the molecular formula of our compound, we must find the factor by which the molar mass of the actual compound differs from the molar mass of the empirical compound. The molar mass of the empirical compound, N₂O₅, is 108.01 g/mol. We are told that the molar mass of the actual compound is 216.0 g/mol. So, the two differ by a factor of (216.0 g/mol)/(108.01 g/mol) = 1.99 ≈ 2.
The molecular formula of this compound is thus N₂ₓ₂O₅ₓ₂ or N₄O₁₀.
Please please please please please please help me a b c or d
Answer:
how far an object moves in a certain amount of time
Explanation:
2 Al + Fe2O3 = Al2O3 + 2 Fe
If 0.915 mol Al2O3 is produced, how many grams of iron is produced?
Answer:
−7.389056fo3+5.436564f
−l2o3+2l
Explanation:
2al+f(2.7182822)o3=al2o3+2f(2.718282)
Step 1: Add -al^2o^3 to both sides.
7.389056fo3+2al+−al2o3=al2o3+5.436564f+−al2o3
−al2o3+7.389056fo3+2al=5.436564f
Step 2: Add -7.389056fo^3 to both sides.
−al2o3+7.389056fo3+2al+−7.389056fo3=5.436564f+−7.389056fo3
−al2o3+0fo3+2al=−7.389056fo3+5.436564f
Step 3: Factor out variable a.
a(−l2o3+2l)=−7.389056fo3+5.436564f
Step 4: Divide both sides by -l^2o^3+2l.
a(−l2o3+2l)
−l2o3+2l
=
−7.389056fo3+5.436564f
−l2o3+2l
a=
−7.389056fo3+5.436564f
−l2o3+2l
A reaction in the laboratory yields 5.98 g KAI(SO2)2, How many moles of potassium aluminum
sulfate were produced?
Answer:
0.0308 mol
Explanation:
In order to convert from grams of any given substance to moles, we need to use its molar mass:
Molar mass of KAI(SO₂)₂ = MM of K + MM of Al + (MM of S + 2*MM of O)*2Molar mass of KAI(SO₂)₂ = 194 g/molNow we calculate the number of moles of KAI(SO₂)₂ contained in 5.98 g:
5.98 g ÷ 194 g/mol = 0.0308 molOnce a product is ready to be sold, engineers must explain their ideas to people who will bring the product to consumers.
Please select the best answer from the choices provided
ОТ
OF
Answer:
ot
Explanation:
there is no choices
Answer:
Advertise
Explanation:
once a product is ready to be sold, engineers explain their ideas to marketing people, who will advertise the product.
FREE POINTS
HURRY PLEASE! help me - you do not have to explain your answer If you dont want to, I just want the 2 answers to these two multiple choice problems because I am struggling!
Answer: We must use 5 moles of [tex]Fe_2O_3[/tex]
8.19 moles of oxygen are needed
Explanation:
The balanced chemical reaction is:
[tex]Fe_2O_3(s)+3CO(g)\rightarrow 2Fe(l)+3CO_2(g)[/tex]
As is the limiting reagent as it limits the formation of product and is the excess reagent.
According to stoichiometry :
2 moles of require = 1 mole of
Thus 10 moles of [tex]Fe[/tex] will require=[tex]\frac{1}{2}\times 10=5moles[/tex] of [tex]Fe_2O_3[/tex]
Thus we must use 5 moles of [tex]Fe_2O_3[/tex]
The balanced chemical reaction is:
According to stoichiometry :
2 moles of require = 3 mole of [tex]O_2[/tex]
Thus 5.46 moles of [tex]Fe_2O_3[/tex] will require=[tex]\frac{3}{2}\times 5.46=8.19moles[/tex]
8.19 moles of oxygen are needed
Find the kinetic energy of the horse using KE=1/2 mv².
A 500-kilogram horse runs at 5 meters/second. The horse’s kinetic energy is
[blank] joules.
Answer:
6250
Explanation:
so m=500 and v=5
so v²=25
using the equation we can do 1/2 x 500 x 25 = 6250
Which of the following statements is true about a balanced chemical equation? A. The number of atoms in the products is greater than the number of atoms in the reactants. B. The number of atoms in the products is less than the number of atoms in the reactants. O C. The number of atoms in the products cannot be determined. O D. The number of atoms in the products is equal to the number of atoms in the reactants.
Answer:
D
Explanation:
the correct answer is D
Identify the decay mode
Please answer asap no explanation needed
(Look at picture)
Answer:
1921 :3 espero y te ayude crack
What is the molar mass of H2CO3
Answer:
Molar mass of H2CO3 : 62.03 g/mol
Help ASAP
3. Components in a heterogeneous mixture are not in the same phase or the composition of the mixture is
a) uniform
b) transparent
c) uneven
Answer:
c
Explanation:
Which of the following ions will form the weakest bond with Na+?
Br^-
F^-
CI^-
I^-
Answer:
Iodide ion, I- will form the weakest bond with sodium ion, Na+
Explanation:
Electronegativity is the ability with which a neutral atom attracts electrons to itself.
The electronegativity of the halogens decrease on going down the group among the halogens. This is is because on going down the group, the atomic size as well as ionic size of the atoms in the group increases. This increase decreases the effect of the attraction of the positive nucleus on the electrons. Thus, valence electrons can be more readily removed.
The transfer of electrons from metallic sodiummto a halogen results in annionic bond between the two atoms. The strength of the ionic bond decreases on going down the group due to decrease in electronegativity. Thus, iodide ion, I-, which is the least electronegative among the given options will form the weakest bond with Na+.