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Olegator [25]
2 years ago
5

Can someone explain how to do this?

Chemistry
1 answer:
skelet666 [1.2K]2 years ago
8 0
The paper is not clear so please ask your problem again with more clear print

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NEED HELP FAST!20 pts for an easy worksheet
rjkz [21]
On the bottom
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3 years ago
when 4.73g of solid was heated, the residue weighed 4.10g 320 cubic centimetre of gas( at RTP) was evolved. calculate the molecu
Eddi Din [679]

Answer:

48 g/mol

Explanation:

Step 1: Calculate the mass of the gas (m)

According to the law of conservation of mass, the mass of the solid before the decomposition must be equal to the sum of the masses of the solid residue and the gas

mSolid = mResidue + mGas

mGas = mSolid - mResidue = 4.73 g - 4.10 g = 0.63 g

Step 2: Convert 320 cm³ to L

We will use the conversion factor 1 L = 1000 cm³.

320 cm³ × 1 L/1000 cm³ = 0.320 L

Step 3: Calculate the moles of gas (n)

The gas is at room temperature (298.15 K) and room pressure (1 atm). We can calculate the moles of gas using the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 1 atm × 0.320 L/(0.0821 atm.L/mol.K) × 298.15 K = 0.0131 mol

Step 4: Calculate the molecular mass of the gas (M)

We will use the following expression.

M = m/n = 0.63 g/0.0131 mol = 48 g/mol

8 0
2 years ago
According to john dalton, elements consist of tiny particles called __________. Atoms of each element are __________ to each oth
Svetach [21]

According to john dalton, elements consist of tiny particles called atoms. Atoms of each element are similar to each other. Compounds consisted of atoms of different elements combined together.

3 0
3 years ago
Which of these common substances is a homogeneous mixture?
IgorC [24]

Answer:

whole milk ,table salt , maple syrup

3 0
2 years ago
Read 2 more answers
What is the mass of 8.87 x 10^24 atoms of carbon?<br><br> PLEASE HELP!!
stiks02 [169]

Answer: 177g

Explanation:

Aw 12 = 6.02214076*10^23 atoms

mass = 12*88.70^23/6.022*10^23

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2 years ago
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