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Alex Ar [27]
4 years ago
6

Help !!!!!!?!?!!?!?????????!????!!!?

Chemistry
1 answer:
andre [41]4 years ago
6 0
2. The "2" in H2O means that there are 2 Hydrogen. The "2" in CO2 means that there are 2 Oxygen.
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iragen [17]

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Explanation:

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3 years ago
Whoever awser right I will give you Brainly
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If five moles of a gas at a pressure of 5.4 kpa have a volume of 120 liters, what is the temperature?
ra1l [238]
<h3>The temperature is 15.58 kelvin </h3>

<em><u>Solution:</u></em>

<em><u>Ideal gas equation is given as:</u></em>

PV = nRt

Where,

P = pressure

V = volume

n = amount of substance

R = ideal gas constant

T = temperature

From given,

V = 120 liters

n = 5 moles

R = 8.314\ \frac{Lkpa}{mol\  K}

P = 5.4 kPa

T = ?

Therefore,

5.4 \times 120 = 5 \times 8.314 \times T\\\\648 = 41.57 \times T\\\\T = 15.58\ kelvin

Thus the temperature is 15.58 kelvin

4 0
3 years ago
Use the pictures below to answer these questions: How does Magnesium become an ion? What is the charge of the Magnesium ion?
marusya05 [52]

Answer:

Explanation:

The bottom picture shows a Mg atom. There are two electrons on the outside ring. When Mg reacts with something, these 2 electrons are given away. The top picture records that fact.

8 0
3 years ago
Energy can be changed from potential to kinetic.<br> A.True<br> B.False
vampirchik [111]

Answer:

An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).

Therefore, true. (Also would u mind giving brainliest, you don't have to hehe)

6 0
3 years ago
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