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erastova [34]
3 years ago
15

PLEAZ HELP!! DUE IN 20!!!

Chemistry
1 answer:
alexira [117]3 years ago
5 0

Answer:

Over time he discovered that the Moon-like phases of Venus demonstrated that the neighboring planet had an orbit independent of Earth. This showed conclusively that Venus circled the Sun, as Copernicus thought, not Earth, as Ptolemy thought. But it did not yet prove conclusively that Earth circled the Sun.

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The data were collected over five spring seasons. What is the difference between the number of frogs in the pond when the rainfa
Lunna [17]

Answer: they like deep water

Explanation: they do

3 0
3 years ago
What is the balanced equation for the combustion of magnesium?
Lostsunrise [7]

Answer:

2Mg  +  O2 →  2MgO

Explanation:

In all conbustion you should know, that reactans are an specific compound and O2, so the products must be CO2 and H2O, or in this case, the corresponding oxide.

6 0
4 years ago
If a sample of cork has a mass of 2.88 g and a volume of 12.0 mL, what is the density of the cork? Show your work.
PilotLPTM [1.2K]

Answer:

The answer is

<h2>0.24 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

<h3>density =  \frac{mass}{volume}</h3>

From the question

mass of cork = 2.88 g

volume = 12 mL

The density is

density = \frac{2.88}{12}

We have the final answer as

0.24 g/mL

Hope this helps you

6 0
3 years ago
What is the chemical formula for Manganese (IV) biphosphate?
Masja [62]
I believe its the first one because manganese is mn and IV is 4 but the cross thing thing will making it the second one but then you have to simplify making it the first one i hope that helps:)
4 0
3 years ago
What does it mean when water is supercooled?
Alex Ar [27]
Supercooling<span>, a state where liquids do not solidify even below their normal freezing point. Means sometimes we have liquid water below 0 degree C.</span>
4 0
3 years ago
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