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makkiz [27]
3 years ago
7

Scientists are often interested in knowing the

Chemistry
2 answers:
valkas [14]3 years ago
8 0

Answer:

0.004993 mols

Explanation:

answer on Edg :)

Lady bird [3.3K]3 years ago
4 0

Answer:0.004993 mols

Explanation:

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Which Two of the following are pure substances*
Snowcat [4.5K]

Answer:

I think A and B

Explanation:

5 0
3 years ago
Read 2 more answers
In the following equation, which element has been reduced?
Mila [183]
The answer is A. you sre correct!
4 0
3 years ago
If 10 staples have a mass of 1.33 g, what will be the mass of 225 staples?
Leona [35]

Answer:

A) 29.9g

Explanation:

first find the weight of 1 staple.

then multiply with 225

5 0
3 years ago
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A balloon is filled to a volume of 1.6 L at 278 K. The balloon is left outside overnight and the temperature has dropped to 253
german

Explanation:

Charles' law gives the relationship between the volume and the temperature of the gas. Mathematically,

Volume ∝ Temperature

i.e. \dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}

We have, V₁ = 1.6 L, T₁ = 278 K, T₂ = 253, V₂=?

V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{1.6\times 253}{278}\\\\V_2=1.45\ L

So, the new volume is 1.45 L.

6 0
3 years ago
199.5 grams unrefined dark crystalline sugar to cups
Dmitry [639]

Answer:

0.9975 cup  

Step-by-step explanation:

"Unrefined dark crystalline sugar" is what non-chemists call "brown sugar."

200.0 g brown sugar = 1 cup

 199.5 g brown sugar = 199.5× 1/200 .0

 199.5 g brown sugar = 0.9975 cup

A standard measuring cup is not capable of this precision and, furthermore, the mass of brown sugar you can get into a cup depends on how tightly you pack it.

Your Mole Day cake will be fine if you use 1 cup of brown sugar as usual.

4 0
3 years ago
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