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Harlamova29_29 [7]
3 years ago
10

A baseball is thrown a distance of 20 meters. What is its speed if it takes 0.5seconds to cover the distance

Chemistry
1 answer:
satela [25.4K]3 years ago
4 0
The answer is that the baseball travels 40 miles per hour
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A scientist has 400 ml of an 8% solution. How much water needs to be added to reduce this to a 2% solution?
mr_godi [17]

Answer:

Explanation:30

7 0
4 years ago
1. Which of the following elements has a complete outer shell of electrons?
Savatey [412]
Number one is neon, so C
3 0
3 years ago
If an ion has 26 protons and 24 electrons what is the charge on the ion
Dmitry_Shevchenko [17]

Answer:

give the ion X

<h2>X2+</h2>

Explanation:

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3 years ago
Density of iron is 7.8 g/cc. How much would 10 cc of iron weigh?
Elena-2011 [213]

Answer:

<h3>The answer is 78 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 10 cc

density = 7.8 g/cc

So we have

mass = 7.8 × 10

We have the final answer as

<h3>78 g</h3>

Hope this helps you

4 0
3 years ago
A student has 0.75 L of a 5.0 M solution and dilutes it to make 3.5 liters. What’s the molarity of the diluted solution?
Marianna [84]

The molarity of the diluted solution : 1.1 M

<h3>Further explanation</h3>

Dilution is the process of adding solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

\tt n_1=n_2\\\\M_1.V_1=M_2.V_2

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

V₂ = Molarity volume of the solution after dilution

M₁=5

V₁=0.75

V₂=3.5

\tt M_2=\dfrac{M_1.V_1}{V_2}\\\\M_2=\dfrac{5\times 0.75}{3.5}\\\\M_2=1.07\approx 1.1

3 0
3 years ago
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