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3 years ago

During a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom?

Chemistry

1 answer:

kirill115 [55]3 years ago

4 0

Explanation:

Iron atom is been oxidised as it losses 2 electron to form 2 + ion.

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A student placed 19.0 g of glucose (c6h12o6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then

EleoNora [17]

moles glucose = 19 g / 180 g/mol= 0.105
M = 0.105 / 0.100 L = 1.05

moles in 20.0 mL = 1.05 M x 0.0200 L = 0.0216

New concentration = 0.0216 /0.500 L = 0.0432 M
moles in 100 mL = 0.100 L x 0.0432 = 0.00432

mass = 0.00432 x 180 g/mol= 0.778 g

7 0

3 years ago

WEATHER PREDICTIONS FROM

fiasKO [112]

Answer:

These predictions are likely to be valid and should be needed.

Explanation:

Meteorologist made predictions about weather of a particular area on the data they received from the satellite. Meteorology is a branch of science in which we study about the atmosphere. It is mainly used for the forecasting of weather and meteorologists are those people or scientists who study the weather and research on different scales or instruments of weather.

7 0

3 years ago

Calculate the percent yield if 52.9 g of ethanol reacts to produce 26.7 g of ether.

blagie [28]

Answer:

The % yield is 62.7 %

Explanation:

Step 1: the balanced equation

2CH3CH2OH(l) → CH3CH2OCH2CH3(l) + H2O(l)

Step 2: Data given

mass of ethanol = 52.9 grams

molar mass of ethanol = 46.07 g/mol

mass of ether = 26.7 grams

Molar mass of ether = 74.12 g/mol

Step 3: Calculate moles of ethanol

Number of moles = Mass / molar mass

Moles of ethanol = 52.9 grams / 46.07 g/mol

Moles of ethanol = 1.15 moles

Step 4: Calculate moles of ether

For 2 moles of ethanol consumed, we have 1 mole of ether produced

For 1.15 moles of ethanol consumed, we have 1.15/2 = 0.575 moles of ether produced

Step 5: Calculate mass of ether

Mass = moles * Molar mass

Mass ether = 0.575 moles * 74.12 g/mol = 42.62 grams = theoretical yield

Step 6: Calculate % yield

% yield = (26.7 / 42.62) * 100 = 62.7%

The % yield is 62.7 %

6 0

4 years ago

Define nonelectrolytes, weak electrolytes, and strong electrolytes in terms of number of ions present in solution. ion dissociat

cestrela7 [59]

Answer:

The three definitions are listed in the explanation.

Explanation:

A nonelectrolyte is a molecular compound that does not consist of ions hence it does not dissociate into ions in solution.

A weak electrolyte is a soluble ionic compound that dissociates only to very small extent into ions in solution.

A strong electrolyte is a soluble ionic compound that dissociates completely into ions when dissolved in water.

3 0

4 years ago

When magnesium combines with sulfur to form magnesium sulfide, it is oxidized to Mg2+. Which statement is true about this reacti

aksik [14]

Answer:

Loss of electrons

Explanation:

7 0

3 years ago