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3 years ago

The chemical properties of ca are most similar to the chemical properties of ?

Chemistry

1 answer:

EastWind [94]3 years ago

6 0

<span>some elements would be Beryllium, Barium, Magnesium, and Strontium</span>

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A solution has pOH 5.9

QveST [7]

Answer:

The answer to your question is below

Explanation:

Data

pOH = 5.9

a) [OH⁻] = ?

pOH measures the [OH⁻]

Formula

pOH = -log[OH⁻]

-Substitution

5.9 = -log[OH⁻]

[OH⁻] = antilog (-5.9)

-Result

[OH⁻] = 1.26 x 10⁻⁶ M

b) [H₃O⁺]

pH + pOH = 14

-Solve for pH

pH = 14 - pOH

-Substitution

pH = 14 - 5.9

-Result

pH = 8.1

-Calculate [H₃O⁺]

pH = -log[H₃O⁺]

-Substitution

8.1 = -log[H₃O⁺]

[H₃O⁺] = antilog(-8.1)

-Result

[H₃O⁺] = 7.9 x 10⁻⁹ M

c) This solution is alkaline because the pH is higher than 7.

6 0

3 years ago

Read 2 more answers

1. The maximum recommended amount of citric acid (H3C6H5O7; the 3 hydrogens listed first are the acidic hydrogens – the only hyd

Lisa [10]

The density has been given as the mass of the substance per volume of the solution. The mass of citric acid in the bottle has been 1.22 grams.

<h3>What is percent mass?</h3>

Percent mass can be given as the mass of substance in the total mass of the solution.

The volume of the face serum has been 250 mL, and the density is 0.979 g/mL.

The mass of face serum in the bottle has been:

$\rm Density=\dfrac{Mass}{Volume}\\ 0.979\;g/mL=\dfrac{Mass}{250\;mL}\\ Mass=244.75\;g$

The total mass of face serum has been 244.75 grams.

The percent mass of citric acid in face serum is 0.5%. This states the presence of 0.5-gram citric acids in 100 grams sample.

The mass of citric acid in the face serum sample is given as:

$\rm 100\;gram\;sample=0.5\;g\;H_3C_6H_5O_7\\\\244.75\;grams\;sample=\dfrac{0.5}{100}\;\times\;244.75\;grams\; H_3C_6H_5O_7\\\\244.75\;grams\;sample=1.22\;grams\;H_3C_6H_5O_7$

The mass of citric acid present in 250 mL serum sample has been 1.22 grams.

Learn more about percent mass, here:

brainly.com/question/5394922

3 0

2 years ago

Un gas a una temperatura de 38°C, tienen un volumen de 21 Lts Litros. ¿Qué volumen tendrá si la temperatura sube a 67°C?.

djverab [1.8K]

Answer:

. ¿Qué

Explanation:

Hope you have a great day

3 0

3 years ago

How does Dr.Hoffmann's ultrasound device benefit society? ( modern chemistry textbook page 180).

Masja [62]

<span> She developed new models for emergency ultrasound education and competency assessment, created a successful emergency ultrasound fellowship program, and introduced electronic </span>workflow<span> solutions to </span>Hopkins<span>, increasing the use of emergency ultrasound by 7-fold.</span>

7 0

3 years ago

Read 2 more answers

The [Fe(H₂O)₆]³⁺ complex requires a relatively small amount of energy to promote an electron from the t2g to the eg. Based on th

Olin [163]

Answer:

The spin of the complex is 5.92 B.M

Explanation:

Please see the attachments below

4 0

3 years ago