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3 years ago

The first attempt at publishing a list of relative atomic masses was made by

Chemistry

2 answers:

tankabanditka [31]3 years ago

6 0

Dalton J. J. Thomson hope this helps

3241004551 [841]3 years ago

6 0

Answer:

John Dalton

Explanation:

In the year 1803, scientist and English teacher, John Dalton published the first list of elements when he printed his atomic theory. Dalton's original list have only five elements: oxygen, hydrogen,azote (nitrogen), sulfur and carbon. These five elements were listed stating their atomic weights. Dalton created a system to symbolize the elements but was later replaced by a system of only letters proposed by Jöns Berzelius. John Dalton’s 2nd volume not came out at 1827 and it contained more number of elements.

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(GIVING BRAINLIEST) do what the following image says.

S_A_V [24]

Answer:

hope it helps.

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7 0

2 years ago

Read 2 more answers

When a 1.00 L sample of water from the surface of the Dead Sea (which is more than 400 meters below sea level and much saltier t

Harlamova29_29 [7]

Answer: Molarity of $MgCl_2$ in the original sample was 1.96M

Explanation:

Molarity is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{\text{no of moles}}{\text{Volume in L}}$

${\text {moles of solute}=\frac{\text {given mass}}{\text {molar mass}}=\frac{186g}{95g/mol}=1.96$

Now put all the given values in the formula of molarity, we get

$Molarity=\frac{1.96}{1.00L}$

$Molarity=1.96mol/L$

Thus molarity of $MgCl_2$ in the original sample was 1.96M

4 0

2 years ago

What is the temperature of a water body containing a 90% saturation and 11.5 ppm of dissolved oxygen?

ozzi

Using the chart that has been provided, we may determine water temperature. We do this by drawing a straight line form the bottom scale which has the ppm of oxygen dissolved to the middle scale which has the percentage saturation.

The line starts from 11.5 ppm on the bottom scale and goes to 90% on the middle scale. Next, we continue this line, without changing its slope, to the third scale showing temperature. We see that it crosses the temperature scale at 4°C.

The temperature of the water is 4 °C.

6 0

3 years ago

A solution containing equal numbers of hydrogen ions and hydroxide ions is

igor_vitrenko [27]

Answer:

The answer to your question is: Neutral

Explanation:

A neutral solution is a solution whose pH is 7.

That means that this solution has the same amount of H⁺ and OH⁻.

Examples of neutral solutions:

- distilled water

- sugar solution

- table salt

- cooking oil.

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3 years ago

Which phase is heat energy being released?

scZoUnD [109]

The answer is B
Vaporization

6 0

2 years ago