All categories

3 years ago

Write each mixed number as as a decimal. Use bar notation if the decimal is repeating.

Chemistry

1 answer:

aniked [119]3 years ago

6 0

Number 1 is 4.875 Number 2 is 3.47 repeating

You might be interested in

What is the percent yield for the reaction below when

kumpel [21]

Answer:

Percent yield of reaction is 150%.

Explanation:

Given data:

Percent yield = ?

Actual yield of SO₃ = 586.0 g

Mass of SO₂ = 705.0 g

Mass of O₂ = 80.0 g

Solution:

Chemical equation:

2SO₂ + O₂ → 2SO₃

Number of moles of SO₂:

Number of moles = mass/ molar mass

Number of moles = 586.0 g/ 64.1 g/mol

Number of moles = 9.1 mol

Number of moles of O₂:

Number of moles = mass/ molar mass

Number of moles = 80.0 g/ 32g/mol

Number of moles = 2.5 mol

Now we will compare the mole of SO₃ with O₂ and SO₂.

SO₂ : SO₃

2 : 2

9.1 : 9.1

O₂ : SO₃

1 : 2

2.5 : 2×2.5 = 5

The number of moles of SO₃ produced by oxygen are less it will limiting reactant.

Theoretical yield of SO₃:

Mass = number of moles × molar mass

Mass = 5 mol × 80.1 g/mol

Mass = 400.5 g

Percent yield of reaction:

Percent yield = actual yield / theoretical yield × 100

Percent yield = 586.0 g/ 400.5 g× 100

Percent yield = 1.5× 100

Percent yield = 150%

8 0

3 years ago

The compound MgF is an example of a(n)

melamori03 [73]

It is metallic compound

7 0

3 years ago

Read 2 more answers

Rebekah finds that a solution of sugar in water has volume of 1.32 go oz how should she report this amount using the metric syst

ira [324]

Its 34 because i did the math

6 0

4 years ago

Read 2 more answers

How is the difference in the physical properties of the powdered mixture components being used to separate them in this lab

Finger [1]

Answer:

This question is incomplete but the missing part is in the picture attached.

Explanation:

A mixture of silicon oxide, ammonium chloride and sodium chloride were to be separated. Three separating techniques were used in the experiment; sublimation, decantation and evaporation.

Sublimation is the process in which a substance changes from solid to gas without passing through the liquid phase. Ammonium chloride (NH₄Cl) is a substance that has the ability to sublime and thus was separated first through this property before adding water to the remaining constituents (silicon oxide and sodium chloride) of the mixture. After the addition of water to the mixture, sodium chloride dissolves in this water while silicon oxide does not dissolve in water. The mixture is then left to stand for some minutes so the undissolved sand can settle at the bottom of the mixture and the dissolved salt water can be decanted out so as to have the silicon oxide left in the jar.

The salt solution decanted will have to be evaporated to dryness (to remove the added water) so as to have the solid salt back.

4 0

3 years ago

The table below shows some information about four different elements.

navik [9.2K]

Answer:

beryllium

Explanation:

6 0

3 years ago