2 years ago

What is PO2 in prefix form?

Chemistry

1 answer:

Dmitriy789 [7]2 years ago

6 0

Answer:

i am not sure sorry

Explanation:

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What can a earthquake do

ycow [4]

A or D I think but go with A it makes more since

4 0

2 years ago

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Balancing Equations. How many of the element should I drag to the center?

babunello [35]

Answer:

4FeS + 7O₂ ----> 2Fe₂O₃ + 4SO₂

Explanation:

You have to drag the elements shown on the right under the formula. For example, you would have to drag 4 of the FeS molecules under the 4FeS text in the formula. Then place 7 O₂ molecules under the 7O₂ text, etc.

8 0

2 years ago

When a 235 92U nucleus is bombarded by neutrons (10n) it undergoes a fission reaction, resulting in the formation of two new nuc

user100 [1]

Answer:

$^{139}_{56}Ba$

Explanation:

The fission reaction taking place given in the question is:

$^{235}_{92}U+^{1}_{0}n\rightarrow ^{A}_{Z}Ba+^{94}_{36}Kr+3^{1}_{0}n$

The mass is conserved in the reaction.

So,

235 + 1 = A + 94 + 3×1

A = 139 g/mol

Also, number o protons remain same. So,

92 = Z + 36

Z = 56

The isotopic symbol is $^{139}_{56}Ba$

5 0

2 years ago

5. What is the pH of an aqueous solution of the strong acid, Perchloric Acid (HClO4), with a concentration of 0.007 M?

bogdanovich [222]

Answer:

The pH is approximately: 2.1549

Explanation:

pH = - log(0.007)

8 0

2 years ago

If I go a distance of 5 meters in 30 seconds, what is my<br> speed

Tresset [83]

Answer:

0.166 m/s

Explanation:

speed = distance / time

= 5 / 30

= 0.166 m/s

6 0

2 years ago