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lyudmila [28]
3 years ago
13

Help fast! Determine the density of a liquid if it’s mass is 50.5 grams.

Chemistry
1 answer:
Leto [7]3 years ago
6 0

Answer:

do we have the volume ?

Explanation:

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3 years ago
Read 2 more answers
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myrzilka [38]

Answer:

0.305 mol

Explanation:

Ca(NO) is not a molecule. I think you meant to type Ca(NO3)2, which is calcium nitrate.

The moles of a compound is equal to is mass divided by its molar mass.

The molar mass of Ca(NO3)2 is 164.09 g/mol.

50.0 / 164.09 = 0.305

6 0
2 years ago
A scientist has 8.5 g of silver nitrate and needs to prepare 1.5 L of a 0.020 M solution. Will there be enough silver nitrate? I
andrey2020 [161]

Answer:

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Explanation:

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4 0
3 years ago
Given an initial cyclopropane concentration of 0.00560 m, calculate the concentration of cyclopropane that remains after 1.50 ho
maria [59]

<span>We can solve this problem by assuming that the decay of cyclopropane follows a 1st order rate of reaction. So that the equation for decay follows the expression:</span>

A = Ao e^(- k t) 

Where,

A = amount remaining at time t = unknown (what to solve for) <span>
Ao = amount at time zero = 0.00560 M </span><span>
<span>k = rate constant
t = time = 1.50 hours or 5400 s </span></span>

The rate constant should be given in the problem which I think you forgot to include. For the sake of calculation, I will assume a rate constant which I found in other sources:

k = 5.29× 10^–4 s–1                     (plug in the correct k value)

<span>Plugging in the values in the 1st equation:</span>

A = 0.00560 M * e^(-5.29 × 10^–4 s–1 * 5400 s )

A = 3.218 <span>× 10^–4 M           (simplify as necessary)</span>

8 0
3 years ago
A 8.5-liter sample of a gas has 1.2 mole of the gas. if 0.65 mole of the gas is added, what is the final volume of the gas? temp
stira [4]

13 liters is the correct answer

13 liters is the final volume of the gas when the temperature and pressure remain constant.

v1/n1 = v2/n2

where,

v1 = initial volume = 8.5 liter

n1= initial mole of gas = 1.2 mole

n2= final mole of gas = 1.2+0.65= 1.85 mole

v2= final volume = ?

8.5 L/1.2 mol = v2/1.85 mol

7 L x 1.85 mol = v2/1.85 mol x 1.85 mol

13 L = v2

v2= 13 liter

<h3>What is a mole?</h3>
  • A mole is an SI unit used to measure significant numbers of subatomic particles, such as atoms, molecules, or smaller particles.
  • Any substance has an Avogadro number of molecules in a mole.
  • The value of the Avogadro number is 6.02214076 × 10^{23}.

<h3>How much is a mole of gas?</h3>

22.4 L

At STP (Standard Temperature and Pressure = 0 °C, 1 atm), an ideal gas has a volume of 22.41 L/mol.

<h3>What makes something a mole?</h3>
  • Chemists use the term "mole" because atoms, molecules, and other particles are all very small and require a large amount to even weigh them.
  • A mole is a measurement of the number of particles present, not their mass.

To learn more about mole of gas visit:

brainly.com/question/1400967

#SPJ4

4 0
2 years ago
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