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3 years ago

Which soil would be the best for growing plants?

1 answer:

7 0

Honestly, its based on your preference but the best recommended one would be loam. I use loam too, and it is really good for growing the plants.

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According to Boyle’s law, when the pressure of a gas increases at constant temperature, its volume

TEA [102]

Answer:

reduces

Explanation:

According to Boyle's law, when the pressure of a gas increases at constant temperature the volume reduces.

Boyle's law states that "the volume of fixed mass of a gas is inversely proportional to the change in pressure if the temperature is constant".

It suggests that at constant temperature, if pressure increases, temperature reduces.

Mathematically, it is expressed as;

P1 V1 = P2 V2

P and V are pressures

1 and 2 are initial and finals state.

3 0

3 years ago

Read 2 more answers

Iodine pentafluoride reacts slowly with glass and violently with water. determine its molecular mass.

pickupchik [31]

<h3>Answer:</h3>

221.90 g.mol⁻¹

<h3>Explanation:</h3>

The mass of contained by a molecule is known as molecular mass. It is the sum of atomic weights of the elements contained by the molecule. In given case Iodine Pentafluoride has a chemical formula,

IF₅

The atomic weights of each element are as;

Iodine = 126.90 g.mol⁻¹

Fluorine = 19.00 g.mol⁻¹

As there are five atoms of Fluorine so, we will multiply the atomic weight of Fluorine by five and that of Iodine by one as there is only one Iodine atom.

Therefore,

Molecular Mass of IF₅ = (1 × 126.90 g.mol⁻¹) + (5 × 19.00 g.mol⁻¹)

Molecular Mass of IF₅ = (126.90 g.mol⁻¹) + (95.00 g.mol⁻¹)

Molecular Mass of IF₅ = 221.90 g.mol⁻¹

8 0

4 years ago

If excess sulfuric acid reacts with 30 grams of sodium chloride, how many grams of HCl are produced

vodka [1.7K]

Consider the Chemical Reaction first:

Reaction: H₂SO₄ + 2 NaCl → 2 HCl + Na₂SO₄

Now, Given mass of NaCl = 30 g
Molar mass of Nacl = 58 g/mol

Now, Number of moles of NaCl = 30/58 = 0.517 mol

Balance the equation, For every 2 molecules of NaCl, 2 molecules of HCl formed, so the number of moles would be same.

Hence, Number of moles of HCl = 0.517 mol

Now, Mass of HCl = Molar mass of HCl * Number of moles
Mass = 36 * 0.517 [ Molar mass of HCl = 36 ]
Mass = 18.62 g

In short, Your Answer would be: 18.62 Grams

Hope this helps!

6 0

3 years ago

In chemistry-what is a catalyst

nika2105 [10]

A catalyst is a substance that decrease the activation energy needed to start a reaction.

4 0

4 years ago

For the following reaction, 6.80 grams of hydrochloric acid are mixed with excess iron. The reaction yields 8.51 grams of iron(I

Orlov [11]

Answer:

A. 11.83g

B. 71.9%

Explanation:

We'll begin by writing the balanced for the reaction. This is shown below:

Fe + 2HCl —> FeCl2 + H2

A. Step 1

Determination of the mass of HCl that reacted and the mass of FeCl2 produced from the balanced equation. This is illustrated below:

Molar Mass of HCl = 1 + 35.5 = 36.5g/mol

Mass of HCl from the balanced equation = 2 x 36.5 = 73g

Molar Mass of FeCl2 = 56 + (35.5x2) = 56 + 71 = 127g

Summary:

From the balanced equation above,

73g of HCl produced 127g of FeCl2.

A. Step 2:

Determination of the theoretical yield of FeCl2.

The theoretical yield of FeCl2 can be obtained as follow:

Fe + 2HCl —> FeCl2 + H2

From the balanced equation above,

73g of HCl produced 127g of FeCl2.

Therefore, 6.80g of HCl will produce = (6.80 x 127)/73 = 11.83g of FeCl2.

Therefore, the theoretical yield of FeCl2 is 11.83g

B. Determination of the percentage yield.

Actual yield = 8.51g

Theoretical yield = 11.83g

Percentage yield =?

Percentage yield = Actual yield/Theoretical yield x100

Percentage yield = 8.51/11.83 x100

Percentage yield = 71.9%

Therefore, the percentage yield of FeCl2 is 71.9%

5 0

3 years ago

Read 2 more answers