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3 years ago

Which answer choice has 4 significant figures... A.100.090090 b.143.29 c.0.05843 D. 0.1000 E. 00.0030020

Chemistry

1 answer:

oksian1 [2.3K]3 years ago

8 0

c. 0.05843 would be the correct answer.

This is because significant figures are measured by starting from the first non-zero digit, and the first non-zero digit in option c. is 5, and it ends at 3. If you count all the figures from 5 through 3, you'll find that there's 4 figures in total (5, 8, 4, 3).

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H2s + h2o h3o+ + hs- identify the bronsted-lowry base(s) in the above equation. (select all that apply.)

gregori [183]

The Bronsted base in H2S +H2O → H3O^+ + HS^- is H2O

Explanation
According to Bronsted Lowry definition of an base , that is a base is a compound that act as a protons acceptor. These protons are in form of hydrogen ions . H2O in the above equation accept one hydrogen ions to form H3O^+

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3 years ago

What is the answer for that ,I need it ASAP !

aev [14]

Answer:

A molecule of the kind normally found in living systems.

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Explanation:

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3 years ago

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4 years ago

Nitrogen dioxide reacts with carbon monoxide to produce nitrogen monoxide and carbon dioxide. NO2(g) + CO(g) ⟶ NO(g) + CO2(g) A

Naya [18.7K]

<u>Answer:</u> The rate law for the reaction is $\text{Rate}=k[NO_3][CO]$

<u>Explanation:</u>

Rate law is defined as the expression which expresses the rate of the reaction in terms of molar concentration of the reactants with each term raised to the power their stoichiometric coefficient of that reactant in the balanced chemical equation.

In a mechanism of the reaction, the slow step in the mechanism determines the rate of the reaction.

For the given chemical reaction:

$NO_2(g)+CO(g)\rightarrow NO(g)+CO_2(g)$

The intermediate reaction of the mechanism follows:

Step 1: $2NO_2(g)\rightleftharpoons NO_3(g)+NO(g);\text{ (fast)}$

Step 2: $NO_3(g)+CO(g)\rightarrow NO_2(g)+CO_2(g);\text{(slow)}$

As, step 2 is the slow step. It is the rate determining step

Rate law for the reaction follows:

$\text{Rate}=k[NO_3][CO]$

Hence, the rate law for the reaction is written above.

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4 years ago

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olga55 [171]

Answer:

20 oxygen atoms

Explanation:

Li2SO4 has 4 oxygen atoms, so if there are 5 of that compound then there will be 20 oxygen atoms.

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3 years ago