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ipn [44]
4 years ago
12

Many elements that are essential for life,including nitrogen,oxygen,and carbon, are part of what classification?

Chemistry
1 answer:
Bess [88]4 years ago
8 0

Answer:

The answer is emma... C

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Which of the following 0.820 M solutions would have the greatest colligative effect?
eimsori [14]

Answer:

K3PO4

Explanation:

Recall that colligative properties depends on the number of particles present. The greater the number of particles present, the greater the degree of colligative properties of the solution. Let us look at each option individually;

SrCr2O7-------> Sr^2+ + Cr2O7^2- ( 2 particles)

C4H11N (not ionic in nature hence it can not dissociate into ions)

K3PO4-------> 3K^+ + PO4^3- (4 particles)

Rb2CO3-------> 2Rb^+ + CO3^2- (3 particles)

Hence K3PO4 has the greatest number of particles and will display the greatest colligative effect.

8 0
3 years ago
What is the net ionic equation for ammonia and phosphoric acid?
olganol [36]
 N<span>et ionic equation for ammonia and phosphoric acid</span>  is 
3 NH4OH + H3PO4 >> (NH4)3PO4 + 3 H2O
hope this helps
7 0
4 years ago
If calcium has two valence electrons and sulfur has six, how many calcium atoms are needed to form an ionic bond with sulfur?
Kipish [7]
3 calcium atoms would be needed.
3 0
3 years ago
Read 2 more answers
PLEASE PLEASE PLEASE HELPPP
Ivan
I believe that the answer is B
8 0
3 years ago
Which of the following is closest to the meaning of the term ancestor?
rjkz [21]

Answer:

I would say A

Explanation:

our ancestors are the people that lived long before us

8 0
3 years ago
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