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sammy [17]
3 years ago
8

Is calcium chloride an acid or base

Chemistry
1 answer:
Crank3 years ago
8 0
Calcium chloride is the salt of hydrochloric acid and calcium hydroxide. Calcium hydroxide is usually not considered a strong base, and I believe this is because of it's low solubility. HCl is a strong acid, and so the salt should be slightly acidic.
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How much heat is required to change 100.0g of ice at 0C into water at 0C?
Oduvanchick [21]

Answer:

5 degrees required for ice

5 0
3 years ago
Which of the following has to remain constant to allow you to use the combined gas law for calculations?
Mazyrski [523]

Answer:

Amount of gas

Explanation:

The combined gas law has to do with pressure, volume, and temperature. All of them can be a variable that you have to solve for. However, amount of gas is not a variable you can solve for, which means it must remain constant.

4 0
3 years ago
How many moles of O2 are consumed when 2.10 mol of magnesium burns?
katrin [286]

1.05 moles of oxygen gas are consumed in the reaction when 2.10 mol of magnesium burns.

<h3>What are moles?</h3>

A mole is defined as 6.02214076 × 10^{23} of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

We are given:

Moles of magnesium = 2.10 mol

For the given chemical reaction:

2Mg + O₂ → 2MgO.

By Stoichiometry of the reaction:

2 moles of magnesium react with 1 mole of oxygen gas.

So, 2.10 moles of magnesium will react with = \frac{1}{2} X2.10 =1.05 moles

Hence, 1.05 moles of oxygen gas are consumed in the reaction.

Learn more about moles here:

brainly.com/question/8455949

#SPJ1

6 0
2 years ago
What is the ph of 0.51 m ca(ch3coo)2 solution?
Sidana [21]

Answer : The pH of calcium acetate solution will be 9.38.


Explanation : When calcium acetate dissocates completely in solution to form Calcium(+2) ions and two acetate ions, this gives the acetate ion concentration as (2 X 0.51 M) = 1.02 M

Acetate ion then hydrolyzes as follows;


C_{2}H_{3}O_{2}^{-}  + HOH  HC_{2}H_{2}O_{2} + OH^{-}:

Now, Kb will be = [HC_{2}H_{2}O_{2}]  [OH^{-}] / [C_{2}H_{3}O_{2}^{-}]


= Kw / Ka


= 1 x 10^{-14} / 1.8 x 10^{-5} = 5.6 × 10^{-10}

[OH^{-}] = 2.4 × 10^{-5}


Now, we know , pOH = -log [OH^{-}] = 4.62


So, the pH = 14 - pOH = 14 - 4.62 = 9.38

8 0
3 years ago
Gold is often used with other metals, such as copper and zinc, to make jewelry. Approximately 58% of the mass of a certain 40 gr
Oduvanchick [21]

Answer:

1.2 cm³.

Explanation:

The following data were obtained from the question:

Mass of neckl = 40 g

Density of gold = 19.3 g/cm³

Volume of gold =..?

Next, we shall determine the mass of the gold in the necklace.

From the question given above, we were told that 58% of the mass of the necklace is gold. Thus, we can obtain the mass of the gold in the necklace as follow:

Mass of neckl = 40 g

Mass of gold =?

Mass of gold = 58% × 40

Mass of gold = 58/100 × 40

Mass of gold = 23.2 g

Therefore, the mass of the gold in the necklace is 23.2 g

Finally, we shall determine the volume of the gold in the necklace as follow:

Density of gold = 19.3 g/cm³

Mass of gold = 23.2 g

Volume of gold =..?

Density = mass /volume

19.3 = 23.2/Volume

Cross multiply

19.3 × Volume = 23.2

Divide both side by 19.3

Volume = 23.2 / 19.3

Volume of gold = 1.2 cm³

Therefore, the volume of the gold in the necklace is 1.2 cm³

4 0
3 years ago
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