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rewona [7]
3 years ago
15

1. Which of the following statements describe cations? Select all that apply.

Chemistry
2 answers:
Wittaler [7]3 years ago
5 0

Answer:

<h3><em>N</em><em>E</em><em>G</em><em>A</em><em>T</em><em>I</em><em>V</em><em>E</em><em>L</em><em>Y</em><em> </em><em>C</em><em>H</em><em>A</em><em>R</em><em>G</em><em>E</em><em>D</em><em> </em><em>I</em><em>O</em><em>N</em><em>S</em></h3>

Explanation:

<h2><em>I</em><em>H</em><em>O</em><em>P</em><em> </em><em>N</em><em>A</em><em>K</em><em>A</em><em>T</em><em>U</em><em>L</em><em>O</em><em>N</em><em>G</em><em> </em><em>#</em><em>L</em><em>I</em><em>K</em><em>E</em><em> </em><em>A</em><em>N</em><em>D</em><em> </em><em>F</em><em>O</em><em>L</em><em>L</em><em>O</em><em>W</em></h2>
Crazy boy [7]3 years ago
5 0
Hey :)

Cations are positively charged ions and they have lost electrons

Hope this helps!
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Calculate the percent composition of Cr2O3
jonny [76]
<span>Cr 2(52.0) = 104 O 3(16.0) = 48
104/152 * 100 = 68.42% Cr
48/152 * 100 = 31.58% O</span>
6 0
3 years ago
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Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in 1.40 L of solution.
olya-2409 [2.1K]

Answer:

0.393 mol/L.

Explanation:

The following data were obtained from the question:

Number of mole of NaOH = 0.550 mol

Volume of solution = 1.40 L

Molarity of NaOH =.?

Molarity of a solution is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:

Molarity = mole /Volume

With the above formula, we can obtain the molarity of the NaOH solution as follow:

Number of mole of NaOH = 0.550 mol

Volume of solution = 1.40 L

Molarity of NaOH =.?

Molarity = mole / Volume

Molarity of NaOH = 0.55 / 1.4

Molarity of NaOH = 0.393 mol/L

Thus, the molarity of the NaOH solution is 0.393 mol/L.

6 0
3 years ago
Which types of bond is formed between the two chlorine atoms in a chlorine molecule?
madam [21]
They achieve stable structures by sharing their single, unpaired electron.
7 0
3 years ago
Question 3 (1 point)
irina1246 [14]

false

Explanation:

i took the test

4 0
3 years ago
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3. Determine the pH of each of the following solutions. (Hint: See Sample Problem B.) a. 1.0 x 10-2 M HCI c. 1.0 x 10-MHI b. 1.0
densk [106]

Answer:

a. pH = 2 b. pH = 3 c. pH = 1 d. Unanswerable

Explanation:

pH = -log[H+] OR pH = -log{H3O+]

                    and inversely

pOH = -log[OH-]

1. Determine what substance you are working with, (acid/base)

2. Determine whether or not that acid or base is strong or weak.

a. 1.0 x 10^-2M HCl

HCl is a strong acid, therefore it will dissociate completely into H+ and Cl- with all ions going to the H+, therefore, the concentration of HCl and concentration of H+ are going to be equal, meaning we simply take the negative logarithm of the concentration of HCl and that would equal pH

pH = -log[H+]

pH = -log(1.0x10^-2)

pH = 2

b. 1.0 x 10^-3M HNO3

HNO3 like part a, is a strong acid, therefore it would simply require you to take the negative logarithm of the concentration of the compound itself, to find its pH.

pH = -log[H+]

pH = -log(1.0 x 10^-3)

pH = 3

c. 1.0 x 10^-1M HI

Like the previous parts, HI is a strong acid

pH = -log[H+]

pH = -log(0.10)

pH = 1

d. HB isn't an element, nor is it a compound so that would be unanswerable.

3 0
3 years ago
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