3 years ago

What are the two main types of research a scientist can pursue?

Chemistry

1 answer:

Jobisdone [24]3 years ago

6 0

Answer:

biology nd geology those have to do with the earth

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Which element is this.Its shiny,Is solid at room temperature, has atoms with two valence electrons?A:Lithium B:Strontium C:Alumi

tatyana61 [14]

Answer:

Stronium

Explanation:

It is a metal (and shows classic physical proerties). It also belongs to the second family, meaning it has two valence electrons.

4 0

3 years ago

In the reaction CuO(s) + CO2(g) → CuCO3(s), a. CO2 is the Lewis acid and CuCO3 is its conjugate base. b. O2– acts as a Lewis bas

adoni [48]

<u>Answer:</u> The correct answer is Option d.

<u>Explanation:</u>

According to Lewis acid-base concept:

The substance which is donating electron pair is considered as Lewis base and the substance which is accepting electron pair is considered as Lewis acid.

For the given chemical reaction:

$CuO(s)+CO_2(g)\rightarrow CuCO_3(s)$

$CO_2$ is accepting electron pair and is getting converted to $CO_3^{2-}$ . Thus, it is considered as Lewis acid.

$O^{2-}$ present in CuO is a Lewis base because it is donating electron pair.

Thus, the correct answer is Option d.

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3 years ago

How much heat does your body lose when 6.35 g of sweat evaporates from your skin at 25 ∘C ? (Assume that the sweat is only water

ziro4ka [17]

Answer:

15.52 kj

Explanation:

H2 O mole wt ~ 18 gm

6.35 gm is 6.35 gm /18 gm/mole = .353 moles of H2O

.353 moles * 44 kj/mole =

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2 years ago

Which section of the reaction represents the reactants

Diano4ka-milaya [45]

A should be the products and D should be the reactants. So D should be the answer.

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3 years ago

The is the rate which a substance undergoes a chemical change

choli [55]

Reaction Rate is the rate at which a substance undergoes a chemical change.

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