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malfutka [58]
3 years ago
9

What is atomic?................................................

Chemistry
2 answers:
ELEN [110]3 years ago
4 0

Answer:

thanx for the points

Explanation:

Pavel [41]3 years ago
3 0

Answer:

oh I'm here thanks for your points

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State the law of multiple proportions.
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Statement that when two elements combine with each other to from more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.
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3 years ago
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What is the percent composition by mass of sulfur in the compound mgso4
Margaret [11]

Answer:

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

Explanation:

Molar mass of compound = 120 g/mol

Number of sulfur atom = 1

Atomic mass of sulfur = 32 g/mol

Percentage of element in compound :

=\frac{\text{Number of atoms}\times \text{Atomic mass}}{\text{molar mas of compound}}\times 100

Sulfur :

=\frac{1\times 32 g/mol}{120 g/mol}\times 100=26.7\%

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

6 0
3 years ago
Recently, the United States government decided to construct a huge crypt in the middle of Yucca Mountain in Nevada to bury high-
Anton [14]
The three concerns that the residents of this area might be:

1) <span>The cost of not moving forward is extremely high, so they opposed the plan, as they think it would affect US economy

2) </span><span>Nuclear waste disposal capability is an environmental imperative, so their environment would be polluted by very radioactive materials.

3) </span>Demand for new nuclear plants also demands disposal capability which supports national security but again, their site will be no longer for them. But unfortunately, <span>Extensive studies consistently show Yucca Mountain to be a sound site for nuclear waste disposal so the plan can't be abolished.

Hope this helps!</span>
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3 years ago
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Determine the chemical formula for the molecule shown.
OLEGan [10]

Answer: Formula is C4H8O. In every branch of line formula there are Carbon atom. Carbon makes 4 bonds so In branch left in which two CH3-groups are attached there are also an Hydrogen aton which is not shown.

Explanation: Molecule is organic, it is classified as aldehyde.

Hydrocarbons contains only Carbon and Hydrogen atoms, Organic molecules can contain also other atoms.

Reactions of aldehydes are reduction to alcoholes or oxidation to carboxylic acids. It can not for a polymer.

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3 years ago
Why do lumps of sodium carbonate react more slowly than powdered sodium carbonate
ollegr [7]

Answer:

In the lab, powdered calcium carbonate reacts much faster with dilute hydrochloric acid than if the same mass was present as lumps of ...

Explanation:

hope it's helpful for u

Mark me as brainlest

3 0
2 years ago
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