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Snowcat [4.5K]
4 years ago
13

What how many degrees variation is there between the highest temperatures and lowest temperatures on the moon?

Chemistry
1 answer:
klemol [59]4 years ago
5 0

When sunlight hits the moon temperatures can hit 260 degrees F, when the sun is not shining on the moon temperatures can go as low as -280 degrees F. This is a 540 degree F difference.

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Which of the following pairs of reactants will react together to produce water (H2O) as one of the products?
Rainbow [258]
1) <span>NaNO3 and H2O - no reaction , it is dissolution
2) no hydrogen to make water
3) </span><span>Fe(OH)3 (base) and H2SO4(acid)) 
base +acid ----> salt +water
4) </span><span>Li2O and Ba(OH)2
basic oxide and base ----> no reaction

so Answer number 3)
</span> 2Fe(OH)3 +3 H2SO4 ------>   Fe2(SO4)3 + 6H2O<span>

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7 0
3 years ago
Read 2 more answers
Which of the following is true about a system at equilibrium? a The concentration(s) of the reactant(s) is equal to the concentr
anyanavicka [17]

Answer:

c The concentration(s) of reactant(s) is constant over time.  

Step-by-step explanation:

When the reaction A ⇌ B reaches equilibrium, the concentrations of reactants and products are constant over time.

a is <em>wrong</em>, because the concentrations of reactants and products are usually quite different.

b is <em>wrong</em>, because both product and reactant molecules are being formed at equilibrium.

d is <em>wrong</em>. The rates of the forward and reverse reactions are equal, but they are not zero.

6 0
4 years ago
When exothermic reactions occur, ______________.
marusya05 [52]

Answer:

heat energy is released into the surrounding

3 0
2 years ago
Can somebody plz answer this question only in 1-2 sentences! That would be great thanks so much :)
lbvjy [14]

Pure substances are substances which are homogenous in nature. They either consists of atoms of 1 kind or molecules of 1 kind. Atoms are seen in elements, where as molecules are seen in compounds like Acids, Bases, etc.

They mostly have fixed properties like boiling and melting points and are uniform in nature. :D

4 0
3 years ago
Over coffee and croissants at breakfast one day, your friend Reuben (an expert chemist) says this: "Soluble metal oxides form hy
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Answer:

Explanation:

The product formed will be alkaline solution of potassium hydroxide .

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Therefore  K₂O is called basic oxide .

5 0
3 years ago
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