3 years ago

What is the main greenhouse gas responsible for influencing the world climate

Chemistry

1 answer:

cluponka [151]3 years ago

6 0

Answer:

carbon dioxide

Explanation:

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How much energy is lost to condense 300. grams of steam at 100.C?

True [87]

Energy lost to condense = 803.4 kJ

<h3>Further explanation</h3>

Condensation of steam through 2 stages:

1. phase change(steam to water)

2. cool down(100 to 0 C)

1. phase change(condensation)

Lv==latent heat of vaporization for water=2260 J/g

$\tt Q=300\times 2260=678000~J$

2. cool down

c=specific heat for water=4.18 J/g C

$\tt Q=300\times 4.18\times (100-0)=125400$

Total heat =

$\tt 678000+125400=803400~J$

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2 years ago

A sample of a substance has a mass of 4.2 grams and a volume of 6 milliliters

allsm [11]

Answer:

Density of the substance is 0.7

Explanation:

4.2/6 = 0.7

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3 years ago

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DONT SKIPP What type of bond will occur between lithium and bromine?

den301095 [7]

An ionic bond is formed between lithium and bromine.

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3 years ago

An example of a substance that can be decomposed by a chemical change is:

Savatey [412]

The answer is iron..

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3 years ago

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Identify the products formed in this Brønsted-Lowry reaction.<br><br> HPO2−4+NO−2↽−−⇀acid+base

klemol [59]

Answer: The products formed in this Bronsted-Lowry reaction are $HNO_{2}$ and $PO^{2-}_{4}$ .

Explanation:

According to Bronsted-Lowry, acids are the species which donate hydrogen ions to another specie in a chemical reaction.

Bases are the species which accept a hydrogen ion upon chemical reaction.

For example, $HPO^{2-}_{4} + NO^{-}_{2} \rightleftharpoons HNO_{2} + PO^{2-}_{4}$

Here, the products formed in this Bronsted-Lowry reaction are $HNO_{2}$ and $PO^{2-}_{4}$ .

Thus, we can conclude that the products formed in this Bronsted-Lowry reaction are $HNO_{2}$ and $PO^{2-}_{4}$ .

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3 years ago