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3 years ago

List the two main types of energy.

1 answer:

5 0

Kinetic energy and Potential energy.

Kinetic energy is energy in motion

Potential energy is stored energy that will eventually be used<span />

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Consider the following balanced equation for the following reaction:

castortr0y [4]

Answer:

47.47 g of CO₂ is the amount formed.

Explanation:

The reaction is:

2C₆H₅COOH(aq) + 15O₂(g) → 14CO₂(g) + 6H₂O(l)

Let's apply the formula for the percent yield

Percent yield of reaction = (Produced yield/Theoretical yield) . 100

First of all we convert the moles of CO₂ to mass: 1.30 mol . 44 g /1 mol = 57.2 g. So now, we replace:

(Produced yield / 57.2 g ). 100 = 83

Produced yield / 57.2 g = 83 / 100

Produced yield / 57.2 g = 0.83

Produced yield = 0.83 . 57.2g → 47.47 g of CO₂

8 0

3 years ago

Read 2 more answers

Which of the following hypotheses cannot be tested using the scientific method?

lara31 [8.8K]

Answer:

<h2>The bombing of Hiroshima ended World War II.</h2>

Explanation:

[The scientific method includes these steps:

Observation

Hypothesis

Experimentation

Data Analysis

Conclusion]

The first two Hypothesis can be tested with the scientific method, you cannot go back in time and observe or experiment with the bombing of Hiroshima to deduce whether or not it ended World War II.

8 0

3 years ago

HELP I HAVE 1 MINUTE LEFT

Katen [24]

Answer:

Explanation:

Because its on top the higher it is, the more potential energy it has

3 0

3 years ago

How much rust is produced with 1.5 kg of Fe reacts with water

ZanzabumX [31]

Answer:

2071g or 2.071kg of rust (Fe3O4)

Explanation:

Step 1:

The balanced equation for the reaction.

3Fe + 4H2O —> Fe3O4 + 4H2

Step 2:

Determination of the mass of Fe that reacted and the mass of the Fe3O4 produced from the balanced equation.

Molar Mass of Fe = 56g/mol

Mass of Fe from the balanced equation = 3 x 56 = 168g

Molar mass of Fe3O4 = (56x3) + (16x4) = 232g/mol

Mass of Fe3O4 from the balanced equation = 1 x 232 = 232g

Summary:

From the balanced equation above,

168g of Fe reacted and 232g of Fe3O4 was produced.

Step 3:

Determination of the mass of rust (Fe3O4) produced when 1.5kg ( i.e 1500g) of Fe reacted.

This is illustrated below:

From the balanced equation above,

168g of Fe reacted to produce 232g of Fe3O4.

Therefore, 1500g of Fe will react to produce = (1500x232)/168 = 2071g of Fe3O4.

From the calculations made above, 2071g or 2.071kg of rust (Fe3O4) is produced.

6 0

3 years ago

To what pressure must a gas be compressed in order to get into a 3.00 cubic foot

Troyanec [42]

Answer:

133.3atm

Explanation:

Given parameters:

Initial volume = 400ft³

Final volume = 3ft³

Initial pressure = 1atm

Unknown:

Final pressure = ?

Solution:

To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".

Mathematically;

P₁V₁ = P₂V₂

P and V are pressure and volume

1 and 2 are initial and final states;

Insert parameters and solve;

1 x 400 = P₂ x 3

P₂ = 133.3atm

6 0

4 years ago