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Inessa [10]
3 years ago
15

In which era did the first fish appear?

Chemistry
1 answer:
VARVARA [1.3K]3 years ago
5 0
C Because Mesozoic Is An Era The First Fish Seen
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How many elements does a compound need to form?
Vinvika [58]

Answer:

two

Explanation:

When two distinct elements are chemically combined, chemical bonds form between their atoms. the result is called a chemical compound

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3 years ago
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According to the kinetic-molecular theory, how do gas particles behave?
mezya [45]

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They are in constant motion.

Explanation:

More energy\heat= more kinetic energy=more motion\movement

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A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?
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It would be volume

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Find the volume in milliliters of 2.00 mol of an ideal gas at 36°C and a pressure of 1120 torr.
hram777 [196]

Answer:

V = 34430 mL

Explanation:

Given data:

Volume in mL = ?

Number of moles of gas = 2.00 mol

Temperature = 36°C (36+273= 309K)

Pressure of gas = 1120 torr

Solution:

Formula:

PV = nRT

V = nRT/P

V = 2.00 mol ×62.4 torr • L/mol · K × 309K / 1120 torr

V = 38563.2 torr • L / 1120 torr

V = 34.43 L

L to mL

34.43 L ×1000 mL / 1 L

34430 mL

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2 years ago
Join anyone<br><br> qof-gsqi-tnk​
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