Balance the following reaction:_mg+_o2=_mgo

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Answer 1

Answer: It would be 2Mg + O2 = 2MgO

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Sandstone and slate are used for building, but these rocks have different properties. Which rock would you use for a use for roof? Which would you use the walls of a building? Explain. Please help ty
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A substance in the solid phase (state) of matter has A.a definite shape and a definite volume B.a definite shape,but no definite volumeC.No definite shape,but a definite volumeD.no definite shape and no definite volume
The cell wall is a rigid structure that surrounds plant cells. The materials found in the cell wall protect the plant cells and give plants structural support.Which conclusion can be made given the above information?The structures of different types of cell organelles are similar.The functions of most cell organelles are hindered by their structures.The structure of a cell organelle is directly related to its function.The function of a cell organelle can change over time.

Where might life exist in the solar system beyond earth

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Some people theorize that there could be life on Mars. The idea came from the fact that Mars and Earth are similar. However Mars' core cooled long ago which means it has no magnetic field which means that its atmosphere is being striped away and surface is bombarded with harmfull radiation from the sun so the prospect of current life is not as good adult could be. Another place is Jupiter's moon Europa. There is evidence indicating that there is a liquid ocean order the icy surface of the moon which which would explain the cracks we see on the surface. Many scientists beleive that this ocean under the surface could harbor life. I hope this helps. Let me know if anything is unclear

How might human activities change to compensate for a decrease in water supplies?Humans might build a factory.
Humans might build drainage systems.
Humans might extract more water from the ground.
Human behavior does not change because of the water cycle.

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Answer: Humans might extract more water from the ground.

Explanation:

Humans may face the situations of unavailability of water supply. Majority of the human population is dependent upon the source of water like oceans, lakes, rivers, ponds and wells for their water supply.

But in the scarcity of water from the drainage supply by the water body human population should search for a relevant alternative such as groundwater. Groundwater is the underground reservoir of water. The water in the groundwater reservoir accumulates from the sources such as rainfall, snow melting, river and oceanic water.

Humans should search for groundwater reservoir for compensating the scarcity of water.

Humans might extract more water from the ground

A mixture of He, Ne, and N2 gases are a pressure of 1.348. If the pressures of He and Ne are 0.124 atm, what is the partial pressure of N2 in the mixture ?

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Answer : The partial pressure of $N_2$ in the mixture is, 1.224 atm

Solution :

According to the Dalton's law, the total pressure of the gas is equal to the sum of the partial pressure of the mixture of gasses.

$P_T=p_(He)+p_(Ne)+p_(N_2)$

where,

$P_T$ = total partial pressure of $He,Ne\text{ and }N_2$ = 1.348 atm

$P_(He)$ = partial pressure of helium

$P_(Ne)$ = partial pressure of neon

$P_(N_2)$ = partial pressure of nitrogen

As we are given that,

$P_(He)+P_(Ne)=0.124atm$

Now put all the given values in above expression, we get the partial pressure of the nitrogen gas in the mixture.

$1.348atm=0.124atm+p_(N_2)$

$p_(N_2)=1.224atm$

Therefore, the partial pressure of $N_2$ in the mixture is, 66 Kpa

The Best Answer: 1 - (.47+.23) = 0.30

If Ne has a mole fraction of 0.47 (or 47/100) and Ar is 0.23, then H2(or He) has a mole fraction of 0.30

This means the gas mixture is 30/100 H2(or He).

7.85 x 0.30 = 2.355 atm

Kendall wants to determine if there is a trend in air temperature changes during April . Which procedure should she chose? A) measure the temperature every hour for 1 day
B) measure the temperature at noon everyday

P.S This is Science

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The answer is letter A

I think the answer is A

Which one of these is an element carbon carbon dioxide air water

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carbon is an element.
Carbon dioxide is a compound
air is a mixture
water can be both a compound/mixture depending on the type

Analyze how friction can be both a positive and negative aspect In our every day lives

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Friction-Now a positive part of friction could be that it helps us from falling while we move about,friction also creates energy
A negative part could be that it produces heat that could damage different forms of machinery and also causes tear in the machinery

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