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rodikova [14]
3 years ago
12

Which two smaller groups is the animals kingdom is divided into

Chemistry
1 answer:
Likurg_2 [28]3 years ago
8 0
C pretty sure it’s C because it’s C
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One method used commercially to peel potatoes is to soak them in a solution of NaOH for a short time and then remove them from t
sergij07 [2.7K]

Answer:

b. 2.28 M

Explanation:

The reaction of neutralization of NaOH with H2SO4 is:

2NaOH + H2SO4 → Na2SO4 + 2H2O

<em>Where 2 moles of NaOH react per mole of H2SO4</em>

<em />

To solve the concentration of NaOH we need to find the moles of H2SO4. Using the chemical equation we can find the moles of NaOH that react and with the volume the molar concentration as follows:

<em>Moles H2SO4:</em>

45.7mL = 0.0457L * (0.500mol/L) = 0.02285 moles H2SO4

<em>Moles NaOH:</em>

0.02285 moles H2SO4 * (2moles NaOH / 1 mol H2SO4) = 0.0457moles NaOH

<em>Molarity NaOH:</em>

0.0457moles NaOH / 0.020L =

2.28M

Right option:

<h3>b. 2.28 M</h3>
7 0
3 years ago
The formula for Na2 O​
Rudiy27

Answer:

Na₂O is the formula for the ionic compound "sodium oxide".

It has 2 sodium atoms and 1 oxygen atom.

The number of atoms for an element are written as a subscript after the element. "1" subscripts are not written.

The names of the elements are found on the periodic table.

8 0
3 years ago
Read 2 more answers
- Express each number in scientific notation
natita [175]

Answer:

Explanation:

oof

8 0
3 years ago
Which element has atoms that can bond with each other to form long chains or rings?
avanturin [10]
<span>The correct answer is option 1. It is the carbon (C) atom that can bond with each other to form ring and chain structures in compounds. These ring and chain structures and compounds are called organic compounds. Chain structures include alkanes, alkenes, alkynes. Ring structures include cyclic hydrocarbons and aromatic hydrocarbons.</span>
5 0
4 years ago
Read 2 more answers
Is the following chemical equation balanced?
FrozenT [24]

Answer:

No

Explanation:

The given equation is not balanced

Chemical equation:

KClO₄ → KCl + O₂

Given Balanced chemical equation:

KClO₄ → 2KCl + 2O₂

Correctly balanced chemical equation:

2KClO₄ → 2KCl + 4O₂

Now this equation is correctly balanced.

There are two potassium atom two chlorine atoms and eight oxygen atoms on both side of equation. So this is correctly balanced.

Coefficient with reactant and product:

KClO₄    2

KCl        2

O₂         4

5 0
4 years ago
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