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likoan [24]
2 years ago
9

Which of the following is true about gravity? Select all that apply.

Chemistry
2 answers:
Dafna1 [17]2 years ago
8 0
Hi I think the answer is b. I don’t really know because I’m in 6 grade but this is my best guess
Ivenika [448]2 years ago
5 0

Answer:

its always attractive

Explanation:

pls follow me

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B: it allow quick conversation to others

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What are covalent bonds
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A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding

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When an ionic compound is placed in water, the positive end of the water molecule is attracted to the cation (+) of the ionic co
Pani-rosa [81]

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3 0
3 years ago
What are you and what do you want with my attendance
Lelu [443]

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8 0
3 years ago
a particular application calls for N2 g with a density of 1.80 g/L at 32 degrees C what must be the pressure of the n2 g in mill
baherus [9]

Answer:

1223.38 mmHg

Explanation:

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

Also,  

Moles = mass (m) / Molar mass (M)

Density (d)  = Mass (m) / Volume (V)

So, the ideal gas equation can be written as:

PM=dRT

Given that:-

d = 1.80 g/L

Temperature = 32 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (32 + 273.15) K = 305.15 K

Molar mass of nitrogen gas = 28 g/mol

Applying the equation as:

P × 28 g/mol  = 1.80 g/L × 62.3637 L.mmHg/K.mol × 305.15 K

⇒P = 1223.38 mmHg

<u>1223.38 mmHg must be the pressure of the nitrogen gas.</u>

5 0
3 years ago
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