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3 years ago

Calculate the percent composition by mass of oxygen in HClO

Chemistry

1 answer:

r-ruslan [8.4K]3 years ago

4 0

Answer:

percentage composition of O in HClO IS 30.47

Explanation:

percentage composition of oxygen in HClO =(atomic mass of O)/(atomic mass of HClO)×100

= $\frac{16}{1+35.5+16}\times 100$

=30.47

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B) NaCl is a molecule.

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4 years ago

Is a particle with a positive charge.:)

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Proton is the answer

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3 years ago

N2 reacts with hydrogen gas according to the following equation:

slega [8]

Answer:

Mass = 51 g

Explanation:

Given data:

Mass of nitrogen = 41.93 g

Mass of ammonia formed = ?

Solution:

Chemical equation:

N₂ + 3H₂ → 2NH₃

Number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 41.93 g/ 28 g/mol

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now we will compare the moles of nitrogen and ammonia.

N₂ : NH₃

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3 years ago

Thermal energy always moves from a greater energy level to a lesser energy level

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Answer:

$\fbox{Law -Based \: on \: laws \: of \: thermodynamic}$

Explanation:

At constant pressure Thermal energy always moves from a greater energy level to a lesser energy level, laws of thermodynamics prove that.

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3 years ago

How many moles of LiOH are required to make 4.2 liters of a 0.98 M

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Answer:

4.12 mol

Explanation:

Given data:

Moles of LiOH required = ?

Volume of solution = 4.2 L

Molarity of solution = 0.98 M

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

we will calculate the moles from above given formula.

0.98 M = number of moles / 4.2 L

0.98 M × 4.2 L = number of moles

Number of moles = 0.98 M × 4.2 L

Number of moles = 4.12 mol (M = mol/L)

7 0

4 years ago