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4 years ago

What is global warming?

Chemistry

2 answers:

Maslowich4 years ago

5 0

Global Warming is a gradual increase in the overall temperature of the earth's atmosphere.

So, i believe the answer to your question would be a) a recent increase in the average global temperatures near Earth's surface

soldier1979 [14.2K]4 years ago

5 0

The answer would be A as it heats gradually not rapidly

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Please help i will give extra points

GREYUIT [131]

Answer:

B. Coal

Explanation: Coal is mined to produce energy.

3 0

3 years ago

Is the following chemical equation balanced? MgI 2 + Br 2 MgBr 2 + I 2

kirill [66]

count the elements in eqn MgI2 + Br2 -> MgBr2 + I2

1 Mg, 2I, 2Br on the left n

1 Mg, 2I, 2Br on the right

they are equal so the eqn is balanced

4 0

3 years ago

Read 2 more answers

What stated of matter and how many phases are present when a 5.0 mL sample of oil is mixed with 100.0 mL of water?

tamaranim1 [39]

two layers of different liquids=two phases.

Because oil doesn't dissolve in water. It only floats on water.

- BRAINLIEST answerer

7 0

3 years ago

Compute the atomic density (the number of atoms per cm3 ... rather than the mass density g/cm3) for a perfect crystal of silicon

serious [3.7K]

Answer:

$\large\boxed{\large\boxed{5.00\times 10^{22}atoms/cm^3}}$

Explanation:

You can convert the density into atomic density using the atomic weight and Avogadro's number

A dimensional analysis is very helpful:

$\dfrac{g}{cm^3}\times \dfrac{mol}{g}\times \dfrac{atoms}{mol}=\dfrac{atoms}{cm^3}$

Follow the chain: g cancels with g, mol cancels with mol; at the end, what remains is atoms/cm³, which is what you want.

Use that with your data:

$\dfrac{2.33g}{cm^3}\times \dfrac{1mol}{28.09g}\times \dfrac{6.022\times 10^{23}atoms}{mol}=\approx 5.00\times10^{22}atoms/cm^3$

3 0

3 years ago

What does subducted mean

vovikov84 [41]

The sideways and downward movement of the edge of a plate of the earths crust into the mantle beneath another plate

4 0

3 years ago

Read 2 more answers