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galben [10]
3 years ago
12

Which statement best explains why the sun and the moon appear to be about the same size in the sky?

Chemistry
2 answers:
Dahasolnce [82]3 years ago
7 0
I think the answer is C... not one 100%
hodyreva [135]3 years ago
3 0
The answer is B, as the moon is about 400 times smaller than the sun, but is also about 400 times closer to earth. So, it has a smaller diameter and is closer to earth than the sun.
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For the reaction H2SO4 + 2Na2OH4 —> Na2SO4 + 2H2O
beks73 [17]
The answer is b) 12 i believe
5 0
3 years ago
A mixture containing initially 3.90 mole of NO(g) and 0.88 mole of CO2(g) was allowed to react in a flask of volume 1.00 L at a
Ymorist [56]

Answer:

Equilibrium constant Kc for the reaction will be 1.722

Explanation:

O2(g)+NO(g)→CO(g)+ NO2(g)

0.88    3.9        ---         ---

0.88x   3.9-x     x           x

GIVEN:

0.88X-X= 0.11

⇒ X=0.77

CO2(g)+NO(g) → CO(g) + NO2(g)

0.88       3.9         ---          ---

0.88-x    3.9-x      x            x

=              3.13       0.77      0.77

=0.11

Kc = \frac{[CO] *[NO2]} {[CO2]*[NO]}

     ={{0.77}×0.77÷{{0.11×3.13}}

     = 1.722

6 0
3 years ago
What is the mass of H2O produced when 14.0 grams of H2 reacts completely with 2.0 grams of O2?
Vladimir79 [104]
Balanced chemical equation:

2 H2 + 1 O2 = 2 H2O

4 g H2  -------> 32 g O2 -----------> 36 g H2O
   ↓                       ↓                             ↓
14.0 g ---------> 2.0 g O2 ----------> mass H2O ?

32 * mass H2O = 2.0 * 36

32 * mass H2O = 72

mass of H2O = 72 / 32

mass of H2O = 2.25 g

hope this helps!.


4 0
3 years ago
Substance formed by the chemical combination of elements is called
nikitadnepr [17]

Answer:

chemical equation

Explanation:

3 0
3 years ago
Rank the nonmetals in each set from most reactive (1) to least reactive (3). bromine chlorine iodine
Anettt [7]

Answer:

The answer is b

Explanation:

have common properties and are good conductors of heat and electricity. They reflect light and are malleable, and ductile.

3 0
3 years ago
Read 2 more answers
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