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harkovskaia [24]
4 years ago
15

Maddie is testing different kinds of soil to see which one is the best for growing plants. She fills one cup with a mixture of s

oil and sand, a second cup with soil and gravel, and a third cup with soil and shredded bark. Then, she plants radish seeds in all three cups.
Write a possible hypothesis for Maddie’s experiment.

What is the variable in this experiment?

How will observation be a part of Maddie’s Experiment?
Chemistry
1 answer:
Oliga [24]4 years ago
8 0

Answer:

Observation is a good thing on Maddie’s experiment because it helps you understand better.The variable is the radish seeds.

Explanation:

Hope this helps!

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As a person BAC level increase it becomes difficult for them to judge their vehicle distances and speed
Eddi Din [679]

Answer:

TRUE

Explanation:

The blood alcohol content is also known as the blood alcohol level or the blood alcohol concentration. It is defined as the measurement of the alcohol intoxication in the body and is used for the legal or the medical purposes.

When the BAC increases in the person's body, the person started to loose clear vision, loss of short term memory, poor muscle coordination,  impaired perception and face difficulty in concentrating. Thus it becomes very difficult for a person to drive a car or ride a bike whose BAC has increased.

The driver cannot properly judge the distances between the vehicle and the speed of the vehicle.

Hence the answer is TRUE.

8 0
3 years ago
How many moles of Ba(NO3)2 are there in 0.25 L of a 2.00 M Ba(NO3)2 solution?
Rufina [12.5K]

Answer : The number of moles of Ba(NO_3)_2 are 0.50 moles.

Solution : Given,

Volume solution = 0.25 L

Molarity of solution = 2.00 mole/L

Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula used :

Molarity=\frac{\text{ Number of moles of solute}}{\text{ Volume of solution}}

Now put all the given values in this formula, we get number of moles.

2.00mole/L=\frac{\text{ number of moles of }Ba(NO_3)_2}{0.25L}

By rearranging the term,

Number of moles of Ba(NO_3)_2 = 0.50 moles

Therefore, 0.50 moles of Ba(NO_3)_2 are there in the solution.


4 0
4 years ago
Read 2 more answers
2 C2H6 + 7 026 H2O + 4 CO2
Kay [80]

Answer:

Oxygen is limiting reactant

Explanation:

Based on the chemical reaction:

2C2H6 + 7O2 → 6H2O + 4CO2

<em>2 mole of ethane reacts with 7 moles of oxygen</em>

<em />

For a complete reaction of 5.25 moles of ethane are required:

5.25 moles Ethane * (7mol Oxygen / 2mol Ethane) = 18.38 moles of oxygen

As there are just 15.0 moles of oxygen

<h3>Oxygen is limiting reactant</h3>
3 0
3 years ago
Why do metallically bonded materials conduct electricity well?
GalinKa [24]
<span>The free electrons in metals can move through the metal, allowing metals to conduct electricity.</span>
6 0
3 years ago
Most radiation exposure comes from A. consumer products. B. nuclear medicine. C. medical X-rays. D. natural sources.
Verizon [17]
The answer is B) nuclear medicine
5 0
4 years ago
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