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Anit [1.1K]
3 years ago
12

Write out and balance the chemical equation:

Chemistry
2 answers:
Contact [7]3 years ago
8 0

Explanation:

NiCl2+KOH--Ni+OH+KCl

NiCl2+KOH--Ni+OH+2KCl

NiCl2+2KOH--Ni+2OH+2KCl

malfutka [58]3 years ago
4 0

Explanation:

NiCl2 + KOH = NiOH + KCl

since nickel is the primary element in nickel ii chloride, find the oxidation no of nickel in the compound and chlorine should have 2 as a subscription since the ii in the compound represents that nickel has an oxidation no of 2

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Are the properties of Rubidium more similar to those of cesium or those of strontium?
fenix001 [56]

More similar to Cesium

Explanation:

The properties of Rubidium are more similar to those of cesium compared to strontium.

Elements in the same group on the periodic table have similar chemical properties.

  • Rubidium and Cesium are located in the first group on the periodic table.
  • Other elements in this group are lithium, sodium, potassium and francium
  • Strontium belongs to the second group on the periodic table.
  • The first group have a ns¹ valence shells electronic configuration.
  • They are all referred to as alkali metals

Learn more:

Sodium brainly.com/question/6324347

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5 0
3 years ago
A solution is prepared by dissolving 38.6 g sucrose (C12H22O11) in 495 g of water. Determine the mole fraction of sucrose if the
stiks02 [169]

Answer:

4.09×10⁻³ is the mole fraction of sucrose

Explanation:

Mole fraction = Moles of solute or solvent/ Total moles

Let's convert the mass to moles (mass / molar mass)

38.6 g / 342 g/m = 0.113 moles of sucrose

495 g / 18 g/m = 27.5 moles of water

Total moles = 0.113 m + 27.5 m = 27.0613 moles

Mole fraction of sucrose = Moles of sucrose / Total moles

0.113 m / 27.0613 moles = 4.09×10⁻³

8 0
3 years ago
How do cheetos store energy?
just olya [345]

Answer:

Calories

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5 0
3 years ago
Acetaminophen is the generic name of the pain reliever in Tylenol and some other headache remedies- The compoundhas the molecula
slega [8]

<u>Answer:</u> The mass percentage of carbon element is 63.57 %, hydrogen element is 5.96 %, nitrogen element is 9.28 % and oxygen element is 21.19 %

<u>Explanation:</u>

We are given:

A chemical compound having chemical formula of C_8H_9NO_2. This compound is made by the combination of carbon, hydrogen, nitrogen and oxygen elements.

1 mole of acetaminophen contains 8 moles of carbon atom, 9 moles of hydrogen atom, 1 mole of nitrogen atom and 2 moles of oxygen atom

Mass of carbon element = (8\times 12)=96g/mol

Mass of hydrogen element = (9\times 1)=9g/mol

Mass of nitrogen element = (1\times 14)=14g/mol

Mass of oxygen element = (2\times 16)=32g/mol

Mass of the compound = 151 g/mol

To calculate the percentage composition of an element in a compound, we use the equation:

\%\text{ composition of an element}=\frac{\text{Mass of element}}{\text{Mass of compound}}\times 100      ........(1)

  • <u>For carbon element:</u>

Putting values in equation 1, we get:

\% \text{ composition of carbon element}=\frac{96}{151}\times 100\\\\\% \text{ composition of carbon element}=63.57\%

  • <u>For hydrogen element:</u>

Putting values in equation 1, we get:

\% \text{ composition of hydrogen element}=\frac{9}{151}\times 100\\\\\% \text{ composition of hydrogen element}=5.96\%

  • <u>For nitrogen element:</u>

Putting values in equation 1, we get:

\% \text{ composition of nitrogen element}=\frac{14}{151}\times 100\\\\\% \text{ composition of nitrogen element}=9.28\%

  • <u>For oxygen element:</u>

Putting values in equation 1, we get:

\% \text{ composition of oxygen element}=\frac{32}{151}\times 100\\\\\% \text{ composition of oxygen element}=21.19\%

Hence, the mass percentage of carbon element is 63.57 %, hydrogen element is 5.96 %, nitrogen element is 9.28 % and oxygen element is 21.19 %

6 0
3 years ago
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