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4 years ago

6

When the solid and liquid phases are present together simultaneously which phase solid liquid contains the greater amount of ene

rgy

1 answer:

enot [183]4 years ago

3 0

Liquid because it is changing to that <span />

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Which symbol in a chemical equation separates the reactants from the products ?

Lana71 [14]

Answer:

Explanation:

The arrow symbol in a chemical equation separates the reactants from products. A chemical reaction is process in which chemical changes leads to the formation of products from reactants.

4 0

4 years ago

Read 2 more answers

Boron trifluoride gas is collected at in an evacuated flask with a measured volume of . When all the gas has been collected, the

Vaselesa [24]

Answer:

0.683 mol

46.3 g

Explanation:

There is some info missing. I think this is the original question.

<em>Boron trifluoride gas is collected at 21.0 °C in an evacuated flask with a measured volume of 50.0 L. When all the gas has been collected, the pressure in the flask is measured to be 0.330 atm. Calculate the mass and number of moles of boron trifluoride gas that were collected. Round your answer to 3 significant digits.</em>

<em />

Step 1: Convert the temperature to the Kelvin scale

We will use the following expression.

K = °C + 273.15

K = 21.0°C + 273.15

K = 294.2 K

Step 2: Calculate the moles of boron trifluoride gas

We will use the ideal gas equation.

$P \times V = n \times R \times T\\n = \frac{P \times V}{R \times T} = \frac{0.330atm \times 50.0L}{\frac{0.0821atm.L}{mol.K} \times 294.2K} = 0.683 mol$

Step 3: Calculate the mass of boron trifluoride gas

The molar mass of BF₃ is 67.81 g/mol.

$0.683 mol \times \frac{67.81g}{mol} = 46.3 g$

8 0

3 years ago

How many grams of H 2 O can be produced with 6.3 moles of O 2 ?

il63 [147K]

Answer:

3.15×18

56.7

................

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3 years ago

If the mass of one or two spheres increases, how does it affect the gravity between the two spheres?

Lunna [17]

If one mass is greater then the other then it will attract to the one with the bigger mass. Its affected by the size

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3 years ago

A student wanted to investigate the effect of light on the growth of

timofeeve [1]

Answer:

D.phototropism

Explanation:

Phototropism is a type of tropism in which a plant or plant part responds to light. According to this question, a student wanted to investigate the effect of light on the growth of cress seedlings. The student used three different pots for the experiment.

Pot 1 was placed with light from above. Pot 2 was placed in a cupboard with no light. Pot 3 was placed in a window with light from one direction only. However, the image attached to this question shows that the plants in the different pots face different directions in response to light, which depicts phototropism

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3 years ago