(1 point) how many ml of water is added to dilute a 10 ml of 0.4 m solution to a new concentration of 0.1 m?

We have to add 30 mL to bring the new solution to 0.1M

Explanation:

Step 1: Data given

Volume = 10.0 mL

Molarity = 0.4M

New molarity = 0.1M

Step 2: Calculate moles of the original solution

moles = molarity * volume

Moles = 0.4M * 0.01 L

Moles = 0.004 moles

The number of moles will not change, the volume will.

Step 3: Calculate volume that we have to add

Volume = moles / molarity

Volume = 0.004 moles / 0.1 M

Volume = 0.04 L = 40 mL = The total new volume

Step 4: Calculate the volume that has to be added:

Volume added = 40 mL - 10 mL = 30 mL

We have to add 30 mL to bring the new solution to 0.1M

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

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