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zloy xaker [14]
3 years ago
5

In which state of matter does an object have a fixed volume and a fixed shape?

Chemistry
2 answers:
Romashka-Z-Leto [24]3 years ago
8 0
C. SOLID. Solid is the state in which matter maintains a fixed volume and shape; liquid is the state in which matter adapts to the shape of its container but varies only slightly in volume; and gas is the state in which matter expands to occupy the volume and shape of its container.
sweet-ann [11.9K]3 years ago
5 0

Explanation:

Solid state

hope it helps

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Assume that matter does not consist of atoms. Show by example how this assumption leads to
Leviafan [203]

If matter was not composed of atoms, the law definite proportions and law of multiple proportions will not hold true because compound would have random composition.

<h3>What is the law of definite proportions and law of multiple proportions?</h3>

The law of definite proportions states that all pure samples of a compound contains the same element in a fixed mass ratio.

The law of multiple proportions states that if an element combines with another element to form more than one compound, the mass of the element combines with a fixed mass of the other element in whole number multiples ratios.

Assuming matter was not composed of atoms, the law definite proportions and law of multiple proportions will not hold true because, their will be no definite ratio or composition in compounds.

The law definite proportions and law of multiple proportions are required for the atomic theory as they help prove that matter consists of definite unique particles called atoms.

In conclusion, the existence of atoms is proved true by the law definite proportions and law of multiple proportions.

Learn more about law of multiple proportions at: brainly.com/question/2624012

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4 0
2 years ago
You need to produce a buffer solution that has a pH of 5.50. You already have a solution that contains 10 mmol (millimoles) of a
balandron [24]

Answer:

56.9 mmoles of acetate are required in this buffer

Explanation:

To solve this, we can think in the Henderson Hasselbach equation:

pH = pKa + log ([CH₃COO⁻] / [CH₃COOH])

To make the buffer we know:

CH₃COOH  +  H₂O  ⇄   CH₃COO⁻  +  H₃O⁺     Ka

We know that Ka from acetic acid is: 1.8×10⁻⁵

pKa = - log Ka

pKa = 4.74

We replace data:

5.5 = 4.74 + log ([acetate] / 10 mmol)

5.5 - 4.74 = log ([acetate] / 10 mmol)

0.755 = log ([acetate] / 10 mmol)

10⁰'⁷⁵⁵ = ([acetate] / 10 mmol)

5.69 = ([acetate] / 10 mmol)

5.69 . 10 = [acetate] → 56.9 mmoles

6 0
3 years ago
Question 3 of 20
kotegsom [21]

Answer:

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6 0
2 years ago
What volume of o2 at 874 mmhg and 33 ∘c is required to synthesize 18.0 mol of no?
Nataly [62]
1) Write the balanced chemical equation

4NH3 + 5O2 ----> 4NO + 6H2O

 2) Write the molar ratios

4 mol NH3 : 5 mol O2 : 4 mol NO : 6 mol H2O

3) Write the proportions with the desired quantity of NO and the unknown quantity of O2

5 mol O2 /  4 mol NO = x / 18.0 mol NO

Solve for x: x = 18.0 mol NO * 5 mol O2 / 4 mol NO = 22.5 mol O2

4) Use the ideal gas equation to convert moles to volume

pV = nRT => V = nRT / p

n = 22.5 mol

R = 0.082 atm*liter / K * mol

T = 33 + 273.15 = 306.15 K

p = 874/760 atm = 1.15 atm

V =  22.5 mol * 0.082 atm*liter/K*mol * 306.15 K / 1.15 atm = 491.17 liter

Answer: 491 liters of O2
3 0
3 years ago
Read 2 more answers
Charles's law describes the relationship of the volume and temperature of
irga5000 [103]

Answer:

the volume will decrease

Explanation:

an increase in temperature will lead to an increase in effective collision which also result in an increase in volume, when the temperature decreases, the volume will decrease

7 0
4 years ago
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