3 years ago

Select whether each example of scientific communication represents a primary source or a secondary source.

Chemistry

1 answer:

Rainbow [258]3 years ago

4 0

Answer:

1. secondary source

2.primary source

3.primary source

4.secondary source

5.secondary source

e2020

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NEED HELP ASAP; PLEASE SHOW YOUR WORK.

Sindrei [870]

Answer:

n = 0.3 mol

Explanation:

Given data:

Volume of gas = 8.0 L

Temperature of gas = 45 °C (45+273 = 318 K)

Pressure of gas = 0.966 atm

Moles of gas present = ?

Ideal gas constant = R = 0.021 atm.L/mol.K

Solution:

Formula:

PV = nRT

P = Pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature

Now we will put the values:

0.966 atm × 8 L = n × 0.0821 atm.L/mol.K × 318 K

7.728 atm.L = n × 26.12 atm.L/mol

7.728 atm.L / 26.12 atm.L/mol = n

n = 0.3 mol

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4 years ago

What is the difference between physical and chemical change?

Vikki [24]

There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

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3 years ago

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What eats a FawnsFoot Mussel?

notsponge [240]

Answer:

I have no Idea please give more context to your question.

Explanation:

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3 years ago

The product of nuclear ___ is several nuclei

garri49 [273]

I think Its "fission"

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3 years ago

Write the products and balance the equation: C4H7OH + O2 → CO2 +H2O

skad [1K]

Answer:

C4H7OH + 6O2 => 4CO2 + 4H2O

Explanation:

hope This helps :)

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3 years ago