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4 years ago

Which conditions create a thunder storm? Select three responses.

Chemistry

1 answer:

zhannawk [14.2K]4 years ago

5 0

I believe the answer is: high humidity, warm air temperature, and low air.

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On Earth, the white colored paper represents areas that are A) covered with snow and reflect sunlight. B) heavily populated and

VikaD [51]

Option A, covered in snow.

7 0

3 years ago

How many significant figures are in this number?<br> 3x10^6<br><br> If it's right 30 POINTS !!!!!!!

DENIUS [597]

There is 1 significant figure in this number

8 0

3 years ago

The primary component of the soda lime used in the experimental chamber (calcium hydroxide) reacts to produce a white precipitat

solmaris [256]

Soda lime is a mixture primarily consisting of calcium hydroxide which is used to remove carbon dioxide gas ( CO2) from the surrounding medium.

The reaction of calcium hydroxide with carbon dioxide produces a white insoluble precipitate of calcium carbonate.

The chemical equation for the reaction is given below.

$Ca(OH)_{2} + CO_{2} --------> CaCO_{3} + H_{2} O$

From the above equation we can see that the mole ratio of Ca(OH)₂ and CaCO₃ is 1:1 . This can be used as a conversion factor to find moles of CaCO₃ formed during the reaction

$2mol[Ca(OH)2] * \frac{1mol[CaCO3]}{1mol[Ca(OH)2]} = 2 mol [CaCO3]$

Using molar mass of CaCO3 ( MW = 100.1 g/mol) we can convert moles of CaCO3 to grams.

$2mol[CaCO3] * \frac{100.1g[CaCO3]}{1mol[CaCO3]} = 200.2g[CaCO3]$

200.2 grams of the precipitate will be produced.

7 0

4 years ago

What is the formula for the stable binary ionic compound formed between Barium and Oxygen?

xeze [42]

Answer: a. BaO

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.

Here element barium is having an oxidation state of +2 called as $Ba^{2+}$ cation and $O^{2-}$ is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral $BaO$

3 0

3 years ago

A group of scientists in Alaska notices that not only have atmospheric CO2 levels increased at their sampling site but so too ha

lutik1710 [3]

Answer:

The release of methane from thawed permafrost.

Explanation:

The complete question is

A group of scientists in Alaska notices that not only have atmospheric CO2 levels increased at their sampling site but so too have methane levels. What could account for this increase in methane levels?

- None of the answer options is correct.

- The release of methane from thawed permafrost.

-A decrease in beef production near the researchers' sampling area.

-The melting of permafrost accompanied by the thawing of methane-producing bacteria.

-The failure of rice paddies to be established in Alaska, given its climate.

Permafrost regions like the arctic circle hold a large supply supply of methane in their soils and their seas. Ordinarily, this methane should be gradually released naturally over a long period of time, but the effects of global warming is making these permafrost to thaw at a much faster rate, accelerating the release of methane into the atmosphere. The dark side is that methane is about 80 times more deadly when compared to CO2 in its contribution to the green house effect on earth.

5 0

4 years ago