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pychu [463]
3 years ago
14

Which molecule among these is polar? NH3 BCl3 O2 NO3

Chemistry
1 answer:
Readme [11.4K]3 years ago
5 0
The answer is NH3. I hope this helped!


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Atoms of element X weigh 32 times more than atoms of element Y. A compound has the formula: XY2 The ratio of the mass of X to th
tamaranim1 [39]

Answer:

16:1

Explanation:

Atoms of element X weigh 32 times more than atoms of element Y. We can write this in a symbolic way.

mX = 32 mY   [1]

where,

  • mX and mY are the masses of X and Y, respectively

A compound has the formula: XY₂, that is, in 1 molecule of XY₂ there is 1 atom of X and 2 atoms of Y. The ratio of the mass of X to the mass of Y in this compound equals:

mX/2 mY  [2]

If we substitute [1] in [2], we get:

mX/2 mY = 32 mY/2 mY = 16 = 16:1

4 0
3 years ago
Which of the following are properties of compounds formed by ionic bonding? Hint: Select the best three answers.
marysya [2.9K]

Answer:

the correct answers are:

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2 years ago
How many sulfur atoms are in 0.45 mol BaSO4??
Lemur [1.5K]

(0.45 mol BaSO_{4})*(\frac{6.022*10^23 molecules}{mol})*(\frac{1 atom S}{1 molecule BaSO_{4}}) = 2.7*10^{23}

4 0
3 years ago
Read 2 more answers
wich answer choice contains organisms that are all prokaryotic. A. archaebacteria and bacteria B. bacteria and fungi C. protists
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Answer:

Explanation:

no

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What was the purpose of letting the transformed cells sit in LB for a few minutes before spreading them onto the plates?
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