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2 years ago

What is the chemical formula for ammonium sulfate?

Chemistry

2 answers:

lisov135 [29]2 years ago

6 0

The formula is (NH4)2SO4

liubo4ka [24]2 years ago

5 0

<u>Answer:</u> The chemical formula for this compound is $(NH_4)_2SO_4$

<u>Explanation:</u>

Ammonium ions and sulfate ions are the polyatomic ions having charges +1 and -2 respectively.

Polyatomic ions are defined as the ions which contains more than 2 atoms.

Criss cross method is the method used for the writing chemical formula of compounds in which the exchange of valencies of the ions is done which are then written in the form of subscripts of the formula.

Hence, the chemical formula for this compound is $(NH_4)_2SO_4$

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The reaction A + B → 2 C has the rate law rate = k[A][B]³. By what factor does the rate of reaction increase when [A] remains co

lawyer [7]

Answer:

Explanation:

To solve this question, we just need to put the new number into the equation. If [A] remain constant then that mean [A2]= [A1]. If B doubled, then that mean [B2]= 2[B2]. To find what factor does the rate of reaction increases, we need to divide the first reaction rate with the second. The calculation will be:

rate2/rate1= k[A2][B2]³ / k[A1][B1]³

rate2/rate1= [A1][2B1]³ / [A1][B1]³

rate2/rate1= A1*8B1³ / A1*B1³

rate2/rate1= 8/1= 8

The rate of reaction will be 8 times faster.

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2 years ago

How many moles of BCl3 are needed to produce 10.0 g of HCl(aq) in the following reaction? (HCl molar mass is 36.46 g/mol).

Scilla [17]

Answer:

Moles of BCl₃ needed = 0.089 mol

Explanation:

Given data:

Moles of BCl₃ needed = ?

Mass of HCl produced = 10.0 g

Solution:

Chemical equation:

BCl₃ + 3H₂O → 3HCl + B(OH)₃

Number of moles of HCl:

Number of moles = mass/molar mass

Number of moles = 10.0 g/ 36.46 g/mol

Number of moles = 0.27 mol

Now we will compare the moles of HCl with BCl₃.

HCl : BCl₃

3 : 1

0.27 : 1/3×0.27 = 0.089 mol

6 0

2 years ago

How many liters of radon gas would be in 3.43 moles at room temperature and pressure (293 K and 100 kPa)?

OLga [1]

Using ideal gas equation,

P\times V=n\times R\times T

Here,

P denotes pressure

V denotes volume

n denotes number of moles of gas

R denotes gas constant

T denotes temperature

The values at STP will be:

P=100 kPa

T=293 K

R=8.314472 L kPa K⁻¹ mol⁻¹

Number of moles of gas=3.43 mole

Putting all the values in the above equation,

$V=\frac{3.43\times 8.314\times 293}{100}$

V=83.55 L

So the volume will be 83.55 L.

83.55 L of radon gas would be in 3.43 moles at room temperature and pressure (293 K and 100 kPa).

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2 years ago

Combined gas law problem: a balloon is filled with 500.0 mL of helium at a temperature of 27 degrees Celsius and 755 mmHg. As th

Papessa [141]

The statement of the combined gas law for a fixed amount of gas is,
PV/T = constant
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2 years ago

What is the predicted order of first ionization energies from highest to lowest for beryllium, calcium, magnesium, and strontium

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6 0

2 years ago

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