4 years ago

How do you calculate molar mass?

1 answer:

7 0

Look at the periodic table and determine the atomic weight of each element. Multiply each atomic weight by the number of atoms in the formula. Then add up the results together to get your answer.

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The density of a substance is 4.8 g/mL. What is the volume of the sample that is 19.2 g?

mixas84 [53]

Answer:

The answer is 4

Explanation:

You divide the grams by the volume which will give you the density

so 19.2 divided by 4.8 equals 4

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3 years ago

What is an example of physical weathering?

mixer [17]

B, Frost Wedging. Have a good rest of your day!

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3 years ago

PLEASE HELP AND THANKS

Kamila [148]

Answer:

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3 years ago

If a gas is initially at a pressure of 9 atm, a volume of 21 liters, and a temperature of 253 K, and then the pressure is raised

alex41 [277]

Answer:

15.04 mL

Explanation:

Using Ideal gas equation for same mole of gas as

$\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}$

Given ,

V₁ = 21 L

V₂ = ?

P₁ = 9 atm

P₂ = 15 atm

T₁ = 253 K

T₂ = 302 K

Using above equation as:

$\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}$

$\frac {{9}\times {21}}{253}=\frac {{15}\times {V_2}}{302}$

Solving for V₂ , we get:

V₂ = 15.04 mL

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3 years ago

How do crickets make sound from your their leg right?

Reptile [31]

The bottom of a cricket wing is covered with teeth-like ridges that make it rough. The upper surface of the wing is like a scraper. When crickets rub the upper and lower parts of their wings together, they create a chirpingsound called “stridulating."

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3 years ago

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