How does the temperature of water affect its ability to hold oxygen?

Answers

Answer 1

Answer:

Answer:The solubility of oxygen and other gases will decrease as temperature increases 9. This means that colder lakes and streams can hold more dissolved oxygen than warmer waters. If water is too warm, it will not hold enough oxygen for aquatic organisms to survive.

Explanation:

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Jordan is doing a science fair project on the effect of music on the growth of tomatoes. He has two tomatoe plants,plant A and plant B, that he grows in a window and gives that same amount of water.plant A is exposed to classical music using headphones attached to the soil. Throughout the growth period, Jordan counts the number of tomatoes produced by each plant.What is the control group?
What is the independent variable?
What is the dependent variable?
What should jordan's conclusion be?
Jordan need to repeat this experiment, what should he do differently?

Answers

The control group is the type of tomato the plants are.
The independent variable is the type of music played.
The dependent variable is Plant A and B's growth.
His conclusion should be that music does not affect the growth of tomatoes.
He should make sure both plants were getting the same amount of water, soil, light, seed, and fertilizer so that can't affect the tomatoes in any way.

Final answer:

The control group in Jordan's experiment is Plant B; the independent variable is the exposure to classical music, and the dependent variable is the number of tomatoes. Jordan's conclusion should be based on comparative results, and for future experiments, he should increase the number of plants for a stronger and more valid conclusion.

Explanation:

In the context of Jordan's science fair project, the control group is the Plant B, which is grown under normal conditions without exposure to classical music.
The independent variable is the exposure to classical music which applies to Plant A, while the dependent variable is the number of tomatoes produced by each plant, as this is what Jordan is comparing between the two conditions.

Jordan's conclusion should be based on the comparative growth results between the two plants. If plant A (exposed to classical music) produces more tomatoes, he might conclude that classical music has a positive effect on the plants' growth. However, this experiment currently lacks repeatability and a larger sample size for stronger validation.

For future experiments, Jordan should aim to increase the number of plants in both experiment and control groups. This would help to control for natural variations and strengthen the conclusion drawn.

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What might happen if earth did not rotate on its axis?

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It would be fatal for all.The ones on the side of sun would get everything but the ones farer than the sun wouldn't survive.There would be day forever on one side and night forever on other.

What happens when a pure substance undergoes a chemical change

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When a pure substance undergoes chemical change, the pure substance changes in chemical composition.

What is a chemical change?

Chemical change is any change that involves the formation of new substances or products and it is not easily reversible.

A pure substance is any substance that has a definite chemical composition.

However, when a pure substance undergoes chemical change, the chemical composition of the substance is changed to form new products.

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The substance changes completely. It undergoes a chemical reaction.

Example is when you bake a cake. You cannot bring it bake to dough.

How is the water supply for New York being protected?

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because of good government and there is skilled manpower who help and protect the water supply for New York being protected............

if 20.0g of N2 gas has a volume of 0.40L and a pressure of 6.0atm, what is the temperature in degrees celsius?

Answers

Answer:

-232 °C

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data:

m = 20.0 g

p = 6.0 atm

V = 0.40 L

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations:

1. Moles of N₂

$\text{n} = \text{20.0 g} * \frac{\text{1 mol}}{\text{28.01 g}} = \text{0.7140 mol}$

2. Temperature of N₂

$\begin{array} {rcl}pV & = & nRT\n\text{6.0 atm} * \text{0.40 L} & = & \rm\text{0.7140 mol} * 0.08206 \text{ L}\cdot\text{atm}\cdot\text{K}^(-1)\text{mol}^(-1) * T\n2.40&=&0.05859T\text{ K}^(-1)\nT& =& \frac{2.40 }{0.05859\text{ K}^(-1)}\n\n & = & \text{41.0 K}\end{array}$

3. Convert the temperature to Celsius

T = (41.0 - 273.15) °C = -232 °C

Question 1 of 15
2 Points
What is another name for a pure substance?
Answer here

Answers

Answer:

element

Explanation:

elements consist of pure substances

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