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Dovator [93]
3 years ago
7

HELP ASAP I WILL GIVE BRAINLIEST

Chemistry
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

it can last for 30 minutes

Explanation:

because it is very good at giving off heat, extothermal heat can last for quite a while.

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Explanation:

I don't think human beings will ever extinct

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tia_tia [17]

Answer:

d = 0.9 g/L

Explanation:

Given data:

Number of moles = 1 mol

Volume = 24.2 L

Temperature = 298 K

Pressure = 101.3 Kpa (101.3/101 = 1 atm)

Density of sample = ?

Solution:

PV = nRT     (1)

n = number of moles

number of moles = mass/molar mass

n = m/M

Now we will put the n= m/M in equation 1.

PV = m/M RT   (2)

d = m/v

PM = m/v RT ( by rearranging the equation 2)

PM = dRT

d = PM/RT

The molar mass of neon is = 20.1798 g/mol

d = 1 atm × 20.1798 g/mol / 0.0821 atm. L/mol.K × 273K

d = 20.1798 g/22.413 L

d = 0.9 g/L

4 0
3 years ago
Help me answer this chemistry question. thank you!
Vladimir79 [104]

Answer:

Chlorine and bromine

Explanation:

I think thats the answer in your question

8 0
3 years ago
A) How many grams of water are produced when 2.50 g of aluminum
egoroff_w [7]
The correct answer is 13 I just did it bro
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GIVING BRAINLIEST!! PLEASE HELP
LenaWriter [7]

Answer:

huh

Explanation:

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