3 years ago

I need the correct answer

Chemistry

2 answers:

zalisa [80]3 years ago

6 0

Answer:

Explanation:

They can be spread through contaminated surfaces.

natulia [17]3 years ago

3 0

Answer:

Explanation: pathogens csnnot be spread be sontaminated surfesec

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An acid, like HCI, would...

frosja888 [35]

Answer: melt

Explanation:

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4 years ago

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What is a covalent bond?

Sphinxa [80]

It is the electron sharing.
electronegative element + electronegative element

exemple :

O₂ , H₂

hope this helps!

3 0

3 years ago

You have a 25.2 L sample of gas at 1.25 atm and 25.0 degrees Celsius. How many moles are present in this gas. For your answer, p

Elenna [48]

Answer:

<u>1.29 mol</u>

Explanation:

This is a direct application of the equation for ideal gases.

$PV=nRT$

Where:

P = pressure = 1.25 atm
V = volume = 25.2 liter
R = Universal constant of gases = 0.08206 atm-liter/K-mol
T = absolute temperature = 25.0ºC = 25 + 273.15 K = 298.15 K
n = number of moles

Solving for n:

$n=\frac{PV}{RT}$

Substituting:

$n=\frac{1.25atm\times 25.2liter}{0.08206atm-liter/K-mol\times298.15K }\\\\n=1.29mol$

8 0

3 years ago

g A mass spectrum. The peak at mass 100 has a 8% relative abundance. THe peak with mass 85 has a 40% abundance. The peak at 71 h

Sati [7]

Answer:

The peak at mass 100 with a 8% relative abundance is the molecular ion peak

Explanation:

Molecular ion peak has the highest charge to mass ratio,

Mass of 100 is same as mass to charge ratio =100

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3 years ago

If a shell can hold a maximum of 32 electrons, what is the value of n

just olya [345]

I think the answe would be 16n

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3 years ago