2 years ago

What was one of the first series of event in the study of chemistry

1 answer:

7 0

Discovered and isolated radium and polonium in 1898

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sammy [17]

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2 years ago

aleksandr82 [10.1K]

B) there is an unequal number of electrons and protons

5 0

3 years ago

umka2103 [35]

Answer:

mass/volume

Explanation:

The slope is rise over run, or y over x. The mass is y on this graph, and the volume is x on this graph. The slope represents mass over volume.

8 0

2 years ago

Trava [24]

Answer: $10\mu L$ of volume needs to be pipetted out in the test tube.

Explanation:

We are given:

Mass of BSA to be formed = $5\mu g=0.005mg$ (Conversion factor: $1mg=1000\mu g$

Volume of stock solution = $200\mu L=0.2mL$ (Conversion factor: $1mL=1000\mu L$

It is also given that for the mass of BSA is 0.5 g, the volume used up is 1 mL

In order to have, 0.005 g, the volume of stock solution needed will be = $\frac{1mL}{0.5g}\times 0.005g=0.01mL=10\mu L$

Hence, $10\mu L$ of volume needs to be pipetted out in the test tube.

3 0

3 years ago

lana66690 [7]

Answer:

John Dalton

Explanation:

Hope that helps

3 0

2 years ago