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2 years ago

I need help with question 2 I will brainliest you if I’m able to

Chemistry

2 answers:

erik [133]2 years ago

4 0

Answer:

Blank 1: Microscope

Blank 2: Cells

vfiekz [6]2 years ago

3 0

Answer: (answers are in bold)

Because of the invention of the microscope, we know that all organisms are made of small living creatures called cells.

Explanation:

Well the statement explains itself; I'll explain the invention of the microscope.

No one really knows who invented the simple microscope, but the compound microscope was invented c. 1590 by Dutch lens-maker Zacharias Janssen. He used it to magnify object to about 10x their original size. Anton von Leeuwenhoek made even better ones; those had up to 275x magnification.

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What do all properties of matter have in common

Wewaii [24]

Answer:

they all matter

Explanation:

cause you matter :)

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3 years ago

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Nitrogen dioxide typically results from the oxidation of nitrogen monoxide in air. If 6.2 mols of N2 react, how many moles of NO

xz_007 [3.2K]

Answer: The mass of oxygen that combines with nitrogen will be 2.272g.

Explanation:

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3 years ago

What other substance containing sodium would be needed to make the buffer?

d1i1m1o1n [39]

The other substance containing sodium would be expected to make the cushion is NaClO or the Sodium hypochlorite. It is for all intents and purposes and synthetically particular from chlorine. Sodium hypochlorite is much of the time utilized as a disinfectant or a blanching operator.

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3 years ago

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Aqueous acetic acid is neutralized by aqueous barium hydroxide. express your answer as a balanced molecular equation. identify a

Studentka2010 [4]

The balanced molecular equation for the given reaction is:

$2CH_3COOH(aq) \ + \ Ba(OH)_2(aq) \rightarrow \ Ba(CH_3COO)_2(aq) + 2H_2O(l).$

<h3>FURTHER EXPLANATION</h3>

To check that the equation is balanced count how many atoms are present for each element in the reactant and product side. If they are the same before and after reaction for all elements, then the reaction is deemed balanced.

The atom counting for the equation is shown below:

$2CH_3COOH(aq) \ + \ Ba(OH)_2(aq) \rightarrow \ Ba(CH_3COO)_2(aq) + 2H_2O(l).$

<u>Reactants </u> → <u>Products</u>

C: (2 x 2) =4 C: (2 x 2) = 4

H: (2 x 4) + (1 x 2) =10 H: (3 x 2) + (2 X 2) = 10

O: (2 x 2) + (1 x 2) = 6 O: (2 x 2) + (2 x 1) = 6

Ba: 1 Ba: 1

Since the number of atoms of each element are similar in the reactants and products, the equation is balanced.

To determine the state of the substances, consider their solubility.

The reactants are both aqueous (aq) as indicated in the problem.

The first product, $Ba(CH_3COO)_2$ is aqueous (aq) because based on the solubility rule, it will dissolve in water. Acetates are generally soluble.