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Vladimir [108]
3 years ago
7

Which of the following cannot have hydrogen bonds? Select one: A. NH3 B. H2O C. HF D. CH3NH2 E. Which of the following cannot ha

ve hydrogen bonds? Select one: A. NH3 B. H2O C. HF D. CH3NH2 E. HCl
Chemistry
1 answer:
noname [10]3 years ago
3 0

Answer:

E. HCl

Explanation:

Cl atom does not have enough electronegativity to make enough positive charge on H.

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How many atoms are in 490 moles of barium?
Usimov [2.4K]

Answer:

2.95 * 10^23 atoms

Explanation:

The number of atoms in a mole is always equal to <u>Avogadro's constant</u>, which is <u>6.02214076×10²³ mol⁻¹</u>.

To find the number of atoms in 0.490 moles of barium, multiply it with <u>Avogadro's constant</u>:

0.490 mol * 6.02214076×10²³ mol⁻¹ ≈ 2.9508 * 10^23

Convert to SigFigs (if necessary):

2.95 * 10^23

4 0
3 years ago
If 15 grams of Carbon dioxide is produced in a chemical reaction, how many grams of Carbon must be consumed in the reaction if w
guajiro [1.7K]

Answer:

Quantity of Carbon is 4.09 gm

Explanation:

Equation of carbon reacting with oxygen to give carbon dioxide is given by

C + O_{2} ⇒ CO_{2}

One mole of carbon reacts with one mole of Oxygen in this reaction to give One mole of Carbon dioxide.

So, 12 gm of carbon reacts with 32 gm of Oxygen in this reaction to give 44 gm of carbon dioxide.

15 gm of CO_{2} was formed in this reaction

Oxygen used in this reaction = \frac{15}{44}×32 = 10.91 gm ,

Thus Oxygen is in sufficient quantity in the reaction.

Now,

Carbon that must be used = \frac{15}{44}×12  = 4.09 gm.

5 0
3 years ago
What is the number of valence electrons in a calcium atom? * 8 2 18 20​
hoa [83]

Answer:

2

Explanation:

4 0
2 years ago
How many grams in 4.53 moles of MgBr2
musickatia [10]

Answer:

520.12554

Explanation:

8 0
2 years ago
Prokaryotic is an example of a/an-<br><br> A:tissue <br> B:cell type<br> C:organ<br> D:organism
Leto [7]

Answer:

B. Cell Type

Explanation:

that is the answer i believe

6 0
3 years ago
Read 2 more answers
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