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3 years ago

A person weighs 77.1 kg. What is his weight in pounds?

Chemistry

2 answers:

frez [133]3 years ago

4 0

77.1 kg = 77.1 x 2.20462 pounds = 169.976 pounds

Sergio [31]3 years ago

4 0

The answer is 169.97640414

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How many grams of nacl are in 250 g of a 15.0% (by weight) solution?

Gelneren [198K]

Answer: -

37.5 g of NaCl are in 250 g of a 15.0% (by weight) solution.

Explanation: -

Total mass = 250 g

Percentage of NaCl = 15.0 %

= $\frac{Number of grams of NaCl present}{total mass}$

Thus $\frac{15}{100}$ = $\frac{Number of grams of NaCl present}{250g}$

Number of grams of NaCl present = $\frac{15 x 250g}{100}$

= 37.5 g

4 0

3 years ago

Mars is known as the ____ planet. A) Blue B) Gaseous C) Red D) Sandy

Leni [432]

Answer:

Of course it's C

Red planet

Explanation:

It is because the soil on Mars is rich of Fe (Iron).

That makes the soil look red.

Even on our planet we have such this places like hormuz island in Iran.

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3 years ago

What is the final volume of a gas (in liters) when the initial volume is 14.00 L at

8_murik_8 [283]

Answer:

$V_2=1344L$

Explanation:

Hello there!

In this case, since we have a problem about volume-pressure relationship, the idea here is to use the Boyle's law to calculate the final volume as shown below:

$P_2V_2=P_1V_1\\\\V_2=\frac{P_2V_2}{P_1}\\$

Then, we plug in the initial and final pressures and the initial volume to obtain:

$V_2=\frac{14.00L*0.9600atm}{0.01000atm}\\\\V_2=1344L$

Regards!

4 0

2 years ago

Which substance contains a bond with the greatest ionic character?

agasfer [191]

Hello!

The correct answer is 1. KCI.

I really hope this helped you out! c:

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3 years ago

What type of reaction does this equation represent?

bonufazy [111]

Answer:

$its \: d. \: double \: replacement \: .$

Explanation:

$hope \: it \: helps \: out \:$

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3 years ago