How many moles of oxygen are needed to react with 100.0 grams of aluminum?

Chemical bonds are likely to form when_____

Viefleur [7K]

Answer: When the electrons in an element are more than the required, a bond is formed with other element which has deficiency of electron and in case when electrons are less in numbers the vice versa happens. Such kind of chemical bonds are known as ionic bond.

Explanation:

7 0

3 years ago

The reaction between an organic acid and an alcohol produces

NARA [144]

If it’s a carboxylic acid with an alcohol then it’ll form an ester and water.

5 0

3 years ago

If your front lawn is 18.0 feet wide and 20.0 feet long. And each square foot of lawn accumulates 1450 new snow flakes every min

creativ13 [48]

To solve this problem, we begin by first calculating the area of the front lawn. The length and width of the lawn was given and the area of a rectangle is given by the formula: Area = length x width. Thus, the area of the front lawn can be obtained by multiplying 18 ft by 20 ft, wherein we get 360 ft^2 as the area.

Second, the problem indicated that each square foot of lawn accumulates 1450 new snow flakes per minute. This can be translated into the expression 1450 snow flakes/ (minute·ft^2). In this way, we can convert it to units of mass (kg). Afterwards, we simply need to multiply it to the area of the lawn and convert minute to hour. The following expression is then used:

1450 snow flakes/ (minute·ft^2) x 1.90 mg/snow flake x 1 g/1000 mg x 1kg/1000 g x 360 ft^2 x 60 minutes/hour = 59.508 kg snow flake/hour

It is then calculated that 59.508 kg of snow flake accumulates in the lawn every hour.

6 0

3 years ago

read carefully and do this questions all part all questions if someone do this questions I will make you brainly and give you th

rosijanka [135]

Answer:

Question 1.

a. the product of the reaction above that contains calcium is calcium chloride, CaCl₂.

b. hydrochloric acid, HCl is the reactant that contains hydrogen

c. the product water, H₂O contains hydrogen

d. the reactant, calcium carbonate, CaCO₃ contains carbon

e. The product carbon (iv) oxide contains carbon

Question 2:

a. atoms of hydrogen and oxygen bonded together as a single compound known as water molecules are present at the start of the reaction

b. two molecules of water are present at the start of the reaction

c. two individual atoms of hydrogen and oxygen existing as molecules are present at the end of the reaction.

d. at the end of the reaction, two molecules of hydrogen and one molecule of oxygen are present.

Question 3:

a. total mass of products = 187 g

b. 10 g of magnesium will be found in the magnesium sulfate

Explanation:

Question 1: The equation of the reaction between calcium carbonate and hydrochloric acid is given as follows: + 2HCl ---> CaCl₂ + H₂O + CO₂

a. the product of the reaction above that contains calcium is calcium chloride, CaCl₂.

b. the reactant, hydrochloric acid, HCl contains hydrogen

c. the product water, H₂O contains hydrogen

d. the reactant, calcium carbonate, CaCO₃ contains carbon

e. The product carbon (iv) oxide contains carbon

Question 2: the equation of the reaction in which water is broken down to hydrogen and oxygen is as follows: 2H₂O ----> 2H₂ + O₂

a. atoms of hydrogen and oxygen bonded together as a single compound known as water molecules are present at the start of the reaction

b. two molecules of water are present at the start of the reaction

c. two individual atoms of hydrogen and oxygen existing as molecules are present at the end of the reaction.

d. at the end of the reaction, two molecules of hydrogen and one molecule of oxygen are present.

Question 3: The equation of the reaction between magnesium and sulfuric acid is given as follows: Mg + H₂SO₄ ---> MgSO₄ + H₂

molar mass of Mg = 24.0 g; molar mass of H₂SO₄ = 98.0 g

a. According to the law of conservation of mass, when 37.0 g of magnesium is reacted with 150 g of H₂SO₄, the total mass of products of the reaction = total mass of reactants = 150 + 37 = 187 g

b. if Chinua starts with 10 g of magnesium, the same 10 g of magnesium will be found in the magnesium sulfate

4 0

3 years ago

What is the theoretical yield of this test reaction? Record answer to the nearest whole number.

NNADVOKAT [17]

Answer : The theoretical yield of water in this reaction is 360 g.

Solution : Given,

Mass of

Molar mass of = 44 g/mole

Molar mass of = 24 g/mole

Molar mass of = 18 g/mole

First we have to calculate the moles of and .

Moles of =

The given balanced chemical reaction is,

From the given reaction, we conclude that

1 mole of react with 2 mole of

20 moles of requires of

But the actual moles of = 42 moles

Excess moles of = 42 - 40 = 2 moles

So, is the limiting reagent.

Now we have to calculate the mass of .

From the reaction, we conclude that

1 mole of gives 1 mole of

20 moles of gives 20 moles of

Mass of = Moles of × Molar mass of

Mass of = 20 moles × 18 g/mole = 360 g

The experimental yield of = 325 g

Therefore, the theoretical yield of = 360 g

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7 0

3 years ago

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