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2 years ago

Who is generally credited with developing the process of using heat?

Chemistry

1 answer:

galina1969 [7]2 years ago

6 0

Answer:

Robert Boyle

Explanation:

I think it's that

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Picture below need done by 2:30 thanks, God bless your week

Leviafan [203]

1. $\sf \bf {\boxed {\mathbb {Evaporation}}}$ - The changing of liquid to a gas.

2. $\sf \bf {\boxed {\mathbb {Automobile}}}$ - The major source of pollution.

3. $\sf \bf {\boxed {\mathbb {Greenhouse \:effect}}}$ - Carbon dioxide and water vapor trapping heat given off by Earth.

4. $\sf \bf {\boxed {\mathbb {Ozonosphere}}}$ - Layer absorbing ultraviolet rays.

5. $\sf \bf {\boxed {\mathbb {Condensation}}}$ - The changing of a gas to a liquid.

6. $\sf \bf {\boxed {\mathbb {Ionosphere}}}$ - Layer responsible for reflecting radio waves.

7. $\sf \bf {\boxed {\mathbb {Troposphere}}}$ - The layer in which weather changes.

$\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}$

5 0

3 years ago

Read 2 more answers

Assuming equal concentrations and complete dissociation, rank these aqueous solutions by their freezing points. nh4cl cobr3 k2so

Illusion [34]

Answer: CoBr3 < K2SO4 < NH4 Cl

Justification:

1) The depression of the freezing point of a solution is a colligative property, which means that it depends on the number of particles of solute dissolved.

2) The formula for the depression of freezing point is:

ΔTf = i * Kf * m

Where i is the van't Hoof factor which accounts for the dissociation of the solute.

Kf is the freezing molal constant and only depends on the solvent

m is the molality (molal concentration).

3) Since, you are assuming equal concentrations and complete dissociation of the given solutes, the solute with more ions in the molecular formula will result in the solution with higher depression of the freezing point (lower freezing point).

4) These are the dissociations of the given solutes:

a) NH4 Cl (s) --> NH4(+)(aq) + Cl(-) (aq) => 1 mol --> 2 moles

b) Co Br3 (s) --> Co(3+) (aq) + 3Br(-)(aq) => 1 mol --> 4 moles

c) K2SO4 (s) --> 2K(+) (aq) + SO4 (2-) (aq) => 1 mol --> 3 moles

5) So, the rank of solutions by their freezing points is:

CoBr3 < K2SO4 < NH4 Cl

4 0

3 years ago

Read 2 more answers

What impact can limiting factors have on a population?

Salsk061 [2.6K]

Answer:

The answer is B. Limiting factors can lower birth rates, increase death rates.

7 0

2 years ago

Read 2 more answers

How many atoms of Pb are there?

jeka94

Answer: i believe it is

602,000,000,000,000,000,000,000 atoms

Explanation:

6.02×1023 atoms/mole

6 0

3 years ago

On the space shuttle, lithium hydroxide is produced from lithium oxide and water. The lithium hydroxide then reacts with the exh

Ratling [72]

Answer:

6,2g of CO₂

Explanation:

Based on the reactions:

Li₂O(s) + H₂O(g) → 2LiOH(s)

LiOH(s) + CO₂(g) → LiHCO₃(s)

2,6g of Li₂O and 1,3g of H₂O are:

2,6g × ( 1mol / 29,88g) = 0,087 moles

1.3g × ( 1mol / 18,01g) = 0,072 moles

That means limiting reactant is H₂O. The moles produced of LiOH are:

0,072 moles of H₂O × ( 2mol LiOH / 1mol H₂O) = 0,14 moles of LiOH

Thus, the maximum CO₂ that can react are 0,14 moles of CO₂, in grams

0,14 moles CO₂ × (44,01g / 1mol) = 6,2g of CO₂

I hope it helps!

6 0

3 years ago