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ryzh [129]
3 years ago
9

How many atoms are in 0.54 moles of chromium?

Chemistry
1 answer:
Levart [38]3 years ago
5 0

Answer:

3.25*10^23  atoms

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What compound has the ability to absorb large amounts of heat without itself increasing dramatically in temperature
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It can be anything with a big heat capacity like water
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Help! I don't have the things to do this and its due TODAY! Could someone help me?
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--- The hot air inside the bottle creates an expansion and when the hot water is applied a contraction occurs, thus causing the balloon to be sucked.

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Explanation:

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Which will most likely result if the levels of dissolved oxygen decrease in a body of water?
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B) Native fish species will begin to decrease in population size.

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Equal masses of substance A and substance B are at 25°C. Substance A has a lower specific heat capacity than substance B. If 50
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6 0
3 years ago
What mass of powdered drink mix is needed to make a 0.5 M solution of 100 mL?
Maru [420]

Answer:

There is 17,114825 g of powdered drink mix needed

Explanation:

<u>Step 1 :</u> Calculate moles

As given, the concentration of the drink is 0.5 M, this means 0.5 mol / L

Since the volume is 100mL, we have to convert the concentration,

⇒0.5 / 1   =  x /0.1    ⇒ 0.5* 0.1  = x = 0.05 M

This means there is 0.05 mol per 100mL

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<u>Step 2 </u>: calculate mass of the powdered drink

here we use the formula n (mole) = m(mass) / M (Molar mass)

⇒ since powdered drink mix is usually made of sucrose (C12H22O11) and has a molar mass of 342.2965 g/mol.

0.05 mol = mass / 342.2965 g/mol

To find the mass, we isolate it ⇒0.05 mol * 342.2965 g/mol = 17,114825g

There is 17,114825 g of powdered drink mix needed

3 0
3 years ago
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