2 years ago

TRUE OR FALSE

Chemistry

1 answer:

SVETLANKA909090 [29]2 years ago

4 0

Answer:

Q1. False

Q2. True

Explanation:

gas molecules are not that at far than dimensions molecules

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Describe what atoms are.

umka21 [38]

Answer:

the smallest component of an element having the chemical properties of the element

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4 years ago

An arctic weather balloon is filled with 22.6L of helium gas inside a prep shed. The temperature inside the shed is 7°C. The bal

Liono4ka [1.6K]

Answer : The new volume of the balloon is, 22.4 L

Explanation :

Charles' Law : It is defined as the volume of gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

$V\propto T$

or,

$\frac{V_1}{V_2}=\frac{T_1}{T_2}$

where,

$V_1$ = initial volume of gas = 22.6 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $7^oC=273+7=280K$

$T_2$ = final temperature of gas = $5^oC=273+5=278K$

Now put all the given values in the above formula, we get the final volume of the gas.

$\frac{22.6L}{V_2}=\frac{280K}{278K}$

$V_2=22.4L$

Therefore, the new volume of the balloon is, 22.4 L

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4 years ago

Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. What is the mass in grams of 385 mL of this liquid?

Makovka662 [10]

Cm^3 = mL

1.11 g/cm^3 = 1.11 g/mL

Density (g/mL) multiplied by volume (mL) will give us the mass (g)

1.11 g/mL * 385 mL = 427.35 g

And since we have 3 significant figures, we have 427. g.

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3 years ago

Which one of the following

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Answer:

Explanation:

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¿Cuántos litros de oxígeno en condiciones normales se producen a partir de 0,45 mol de O2?

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