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3 years ago

H2SO4 + Ca(OH)2 --> CaSO4 + H20 Balancing?

Chemistry

1 answer:

slavikrds [6]3 years ago

4 0

Answer:

This is an acid-base reaction (neutralization): H 2SO 4 is an acid, Ca(OH) 2 is a base.

...

1 H2SO4 + Ca(OH)2 → H2O + CaSO4

2 H2SO4 + Ca(OH)2 → CaSO4 + HOH

3 H2SO4 + Ca(OH)2 → H2O + CaOH2SO4

4 H2SO4 + Ca(OH)2 → H2O + Ca(HSO4)2

5 H2SO4 + Ca(OH)2 → H2O + (CaOH)2SO4

Explanation:

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The density of helium is 0.17 g/L. What Is the mass of helium in a 5.4 L helium balloon? (2 sig figs) *

ioda

Answer:

The correct answer is 0.92 g

Explanation:

The density is defined as the mass per unit of volume:

Density= mass/volume

From the data provided:

volume= 5.4 L

density= 0.17 g/L

Thus, to calculate the mass of helium:

mass= density x volume = 0.17 g/L x 5.4 L= 0.918 g ≅ 0.92 g

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3 years ago

Genetic information about traits is carried in

VikaD [51]

DNA, which is found in chromosomes in the nucleus

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3 years ago

In a reaction between vinegar and antacid tablets, the antacid is the limiting reagent. At constant pressure and temperature, th

lyudmila [28]

1200cm³ of gas

Explanation:

From the analogy provided in this problem,

we know that;

three tablets will produce 600cm³ of gas

This implies that;

1 tablet of the antacid will produce $\frac{600}{3}$ = 200cm³

If 1 tablet of the antacid produces 200cm³ of gas,

under the same condition;

6 tablets will produce = 6 x 200 = 1200cm³ of gas

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4 0

3 years ago

The solubility of Cr(NO3)3⋅9H2O in water is 208 g per 100 g of water at 15 ∘C. A solution of Cr(NO3)3⋅9H2O in water at 35 ∘C is

Zinaida [17]

Answer:

102g of crystals

Explanation:

When the Cr(NO₃)₃⋅9H₂O is dissolved in water at 15°C, the maximum mass that water will dissolve in the equilibrium is 208 g per 100g of water. When you heat the water, this mass will increases.

In this problem, at 35°C the water dissolves 310g in 100g of water, as in the equilibrium at 15°C the maximum mass is 208g, the mass of crystals that will form is:

310g - 208g = 102g of crystals

-Crystals are the Cr(NO₃)₃⋅9H₂O that is not dissolved-.

I hope it helps!

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4 years ago

Suppose that you take a sample of 500 g of ocean water and let the water evaporate. The mass of the remaining salts is 17 g. Wha

yanalaym [24]

Answer: The salinity of ocean water is 34 ppt.

Explanation:

Salinity is defined as the number of grams of salts present per kilogram of seawater. It is expressed in parts per thousand.

The formula used to calculate the salinity of ocean water or sea water is:

$\text{ Parts per thousand}=\frac{\text{Mass of salts}}{\text{Mass of sea water}}\times 1000$

We are given:

Mass of salts = 17 g

Mass of sea water = 500 g

Putting values in above equation, we get:

$\text{ Parts per thousand}=\frac{17g}{500g}\times 1000\\\\\text{ Parts per thousand}=34$

Hence, the salinity of ocean water is 34 ppt.

8 0

3 years ago