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pav-90 [236]
2 years ago
14

All organic compounds must contain the element

Chemistry
1 answer:
Dafna11 [192]2 years ago
6 0
All organic compounds must contain the element, Carbon. 
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A solution of saline may contain 1.81 mol of sodium chloride (NaCl). How many sodium atoms are present in the solution?
joja [24]

Answer:

1.09 x 10²⁴ atoms Na

Explanation:

In one mole of NaCl, there is also one mole of Na. To convert between moles and atoms, you need to use Avogadro's number. When writing the conversion, the desired unit (atoms) should be placed in the numerator to allow for the cancellation of units (moles). The final answer should have 3 sig figs to match the given number (1.81 mole).

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

1.81 moles Na           6.022 x 10²³ atoms
---------------------  x  --------------------------------  =  1.09 x 10²⁴ atoms Na
                                       1 mole

5 0
1 year ago
How many grams of Zn(NO3) are in 3.67 miles?
Vikki [24]
0.866 Zn are in 3.67 miles
8 0
3 years ago
Please explain how to find each answer solution.
svp [43]

Explanation:

1) Based on the octet rule, iodine form an <u>I</u>⁻ ion.

Therefore,

Option E is correct ✔

2) The electronic configuration of the sulfide ion (S²⁻) is :

₁₆S = 1s² 2s² 2p⁶ 3s² 3p⁴ or [Ne] 3s² 3p⁴

₁₈S²⁻ = 1s² 2s² 2p⁶ 3s² 3p⁶ or [Ne] 3s² 3p⁶

Therefore,

Option E is correct ✔

3) valence shell electron of

Halogens = 7

Alkali metal = 1

Alkaline earth metal = 2

Therefore,

Option D is correct ✔

4) Group 2 element lose two electron in order to achieve Noble gas configuration.

And here Group 2 element is Sr

Therefore,

Option B is correct ✔

5) Group 13 element lose three electron in order to achieve Noble gas configuration.

And here Group 13 element is Al

Therefore,

Option B is correct ✔

6) For a given arrangements of ions, the lattice energy increases as ionic radius <u>decreases</u> and as ionic charge <u>increases</u>.

Therefore,

Option A is correct ✔

7 0
2 years ago
Answer please i need it
bixtya [17]
I believe it’s c since it’s 2.5 cups of flour for each butter
8 0
2 years ago
Which element do all organic compounds contain?
bulgar [2K]

Answer:

hydrogen oxygen or nitrogen

6 0
3 years ago
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