Answer and Explanation: The molar mass of magnesium is equal to 24.31 grams/mole while the molar mass of magnesium chloride is equal to 95.21 grams/mole. The percent composition of magnesium in the compound is **25.53%**.

### Q3.48 Unanswered 2 attempts left What is the mass percent of …

*What is the mass percent of magnesium in magnesium chloride*? Use two decimal places in atomic masses Only give the numeric value …

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## What is the mass of Mg in MgCl2?

The molar mass of MgCl2 can be computed as the sum of the molar mass of Mg i.e 24.3 g/mol and the molar mass of two atoms of chlorine i.e 2×35.5 = 71g/mol.

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## What is the percentage of magnesium in magnesium?

The atomic weight of magnesium Mg is 24.3. The atomic weight of oxygen is 16.0. To calculate the percent composition of magnesium, substitute the values in the given equation. The percent composition of magnesium in magnesium oxide is 39.70 %.

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## What is the percentage by mass of Cl in MgCl2 if it is 25.5% Mg by mass?

So, the mass percent chloride is 100%−25.5%=74.5% 100 % − 25.5 % = 74.5 % . The mass percentage of total chlorine is 74.5%. Therefore, the percentage by mass of total two Cl in magnesium chloride is 74.5%.

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## What is composition of MgCl2?

Magnesium chloride. An inorganic compound consisting of one magnesium and two chloride ions. The compound is used in medicine as a source of magnesium ions, which are essential for many cellular activities.

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## What is the percent by mass of Mg and Cl in MgCl2?

The molar mass of Mg and Cl is 24 g/mol and 35.5 g/mol respectively. Thus, the percent composition of Mg and Cl in MgCl2 M g C l 2 is 25.26 % and 74.74 % respectively.

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## What is the percent by mass of Cl?

mass % 0f Cl=97.26.

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## How much chlorine is in MgCl2?

Magnesium chloride contains 1 magnesium (2+) atom and 2 chlorine (1-) atoms.

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## What is the percent by mass of Cl in calcium chloride?

The percentage by weight of the chloride ion in calcium chloride is 63.9%. The total molar mass of calcium chloride is 110.98 g/mol.

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## What is the mass percent of Mg in MgCl2?

Answer and Explanation: The molar mass of magnesium is equal to 24.31 grams/mole while the molar mass of magnesium chloride is equal to 95.21 grams/mole. The percent composition of magnesium in the compound is 25.53%.

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## How many moles of Mg are in MgCl2?

Since one mole of MgCl2 consists of one mole of magnesium and two moles of chlorine, the mass of one mole of MgCl2 must be the sum of the masses of the elements.

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## What is the mass in grams of MgCl2?

The molar mass of MgCl2 can be computed as the sum of the molar mass of Mg i.e 24.3 g/mol and the molar mass of two atoms of chlorine i.e 2×35.5 = 71g/mol. Hence the molar mass of MgCl2 is 24.3 +71 =95.3 grams per mole (i.e. 95.3 g/mol).

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## How many Mg atoms are in MgCl2?

Magnesium chloride. An inorganic compound consisting of one magnesium and two chloride ions.

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## What is the percent composition of Mg in MgCl2?

Answer and Explanation: The molar mass of magnesium is equal to 24.31 grams/mole while the molar mass of magnesium chloride is equal to 95.21 grams/mole. The percent composition of magnesium in the compound is 25.53%.

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## How much chlorine is in MgCl2?

Magnesium chloride contains 1 magnesium (2+) atom and 2 chlorine (1-) atoms.

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## What is the percent composition of magnesium in magnesium?

The atomic weight of magnesium Mg is 24.3. The atomic weight of oxygen is 16.0. To calculate the percent composition of magnesium, substitute the values in the given equation. The percent composition of magnesium in magnesium oxide is 39.70 %.

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## What is the percentage of magnesium?

Magnesium is the eighth most abundant element in Earth’s crust (about 2.5 percent) and is, after aluminum and iron, the third most plentiful structural metal. Its cosmic abundance is estimated as 9.1 × 105 atoms (on a scale where the abundance of silicon = 106 atoms).

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## What is the percentage of magnesium Mg in magnesium sulfate mgso4?

Magnesium sulfate or magnesium sulphate (in English-speaking countries other than the US) is a chemical compound, a salt with the formula MgSO 4, consisting of magnesium cations Mg2+ (20.19% by mass) and sulfate anions SO2−4.

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## What is the percentage of magnesium in magnesium chloride?

Answer and Explanation: The molar mass of magnesium is equal to 24.31 grams/mole while the molar mass of magnesium chloride is equal to 95.21 grams/mole. The percent composition of magnesium in the compound is 25.53%.

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