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3 years ago

How many grams of O2 are produced as 0.033 mol of water decompose

Chemistry

1 answer:

PolarNik [594]3 years ago

6 0

Answer: This can be quickly solved with "traintracks"

Explanation:

You start w/ grams of water and want to find moles of oxygen gas produced.

So you want to Convert:

Grams of water -> moles of water -> moles of oxygen gas.

The two things you need to know to set up the tracks are:

1)Molar mass of water- H2O

Hydrogen - 1.008(x2)

Oxygen - 16.00

Water - 18.016

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Acetylene gas C2H2 undergoes combustion to form carbon dioxide and water when it is used in the oxyacetylene torch for welding.

Elenna [48]

Answer:

The answer to your question is below

Explanation:

Reaction

C₂H₂ (g) + O₂(g) ⇒ CO₂ (g) + H₂O (g)

Reactants Elements Reactants

2 C 1

2 H 2

2 O 3

This reaction is unbalance

Reaction balanced

2C₂H₂ (g) + 5O₂(g) ⇒ 4CO₂ (g) + 2H₂O (g)

Reactants Elements Reactants

4 C 4

4 H 4

10 O 10

Now, the reaction is balanced

a) Calculate the molecular mass of acetylene and water

Acetylene = (12 x 2) + (2) = 26 g

Water = (1 x 2) + (1 x 16) = 18 g

2(26) g of Acetylene --------------- 2(18) g of Water

113 g of Acetylene -------------- x

x = (113 x (2 x 18)) / 2(26)

x = 4068 / 52

x = 78. 2 g of water

b) 2 moles of Acetylene ------------ 4 moles of carbon dioxide

x moles of acetylene ------------ 1.10 moles of carbon dioxide

x = (1.10 x 2) / 4

x = 0.55 moles of acetylene

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3 years ago

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True or False When one side of a molecule is electronegative (δ-) and the other side of the

lesya [120]

Answer:

True; When one side of a molecule is electronegative (δ-) and the other side of the

molecule is electropositive (δ+), it is said to have a dipole moment.

Explanation:

A dipole moment exists in a molecule as a result of differences in the electronegativity values between the atoms of the elements involved in the chemical bonding.

When a strogly electronegative atom such as oxygen or chlorine is chemically bonded to a less electronegative or an electropositive atom such as hydrogen, there is an uneven sharing of the electrons involved in the bonding. The more electronegative atoms tends to draw the shared electrons mostly to themselves. This induces a partially negative charge (δ-) on them while leaving the electropositive atoms with a partially positive charge (δ+).

Water is an example of a molecule having a dipole moment. The oxygen atoms are more electronegative than hydrogen and as such draw the shared electrons to themselves more, inducing a partial positive charge (δ+) on the hydrogen atoms while they themselves develop a partial negative charge (δ-).

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3 years ago

Which part of an atom has a negative electric charge?

kherson [118]

Answer: A:electrons

Explanation:

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3 years ago

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Weathering affect rock formations by ....... HELP MEEE

Maksim231197 [3]

Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion

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3 years ago

Four different objects are placed on a number line at 0. The chart describes the motion of each object. Using the information in

mote1985 [20]

The chart with the information to answer this question may be found in other Brainly's link, so I attach it now.

Answer:

Explanation:

To facilitate the accompaniment of the reasoning, I copy the data here:

Object Motion

X 3 units left, 3 units right

Y 6 units right, 18 units right

W 8 units left, 24 units right

Z 16 units right, 8 units left

The distance is the scalar magnitude that indicates the total length of the path traveled.

The displacement is the vector that indicates how far the end point and the initial point are.

In order to calculate the distance, the displacement and the ratio r = distance/displacement, to check which object has a distance that is three times as great as its displacement, i.e. r = 3, we use this new chart:

Object Motion Distance Displacement ratio

X 3 units left, 3 units right 3 + 3 = 6 3 - 3 = 0 ∞

Y 6 units right, 18 units right 6 + 18 = 24 6 + 18 = 24 1

W 8 units left, 24 units right 8 + 24 = 32 -8 + 24 = 16 2

Z 16 units right, 8 units left 16 + 8 = 24 16 - 8 = 8 3

The ratios were calculated dividing the distance by the displacement: distance / displacement.

For the object Z, that was 24 / 8 = 3. Thus, the object that has a distance that is three times as great as its displacement is the object Z.

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3 years ago

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