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k0ka [10]
3 years ago
9

Help me please ........

Chemistry
1 answer:
kykrilka [37]3 years ago
5 0

Answer:

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During one researcher's experiment, the total mass of the gas-generating solid and entire assembly was 52.1487g before the react
irinina [24]

Answer:

43.93 g/mol

Explanation:

The mass of the gas before reaction = 52.1487 g

The mass of the gas after reaction = 52.1098 g

Mass of gas generated = 0.0389 g

Moles of the gas = 8.854\times 10^{-4}\ moles

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Molar\ mass = \frac{Mass\ taken}{Moles}

Molar\ mass= \frac{0.0389\ g}{8.854\times 10^{-4}\ moles}

Molar mass of the gas = 43.93 g/mol

7 0
3 years ago
How do scientists measure the idea of time so long ago?
professor190 [17]

The Ancient Egyptians used simple sundials and divided days into smaller parts, and it has been suggested that as early as 1,500BC, they divided the interval between sunrise and sunset into 12 parts. ... Known as a clepsydra, it uses a flow of water to measure time.

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2 years ago
Within a period, the nuclear charge increases as you move from left to right across the
a_sh-v [17]

Answer:

The answer is Ionization energy.

Explanation:

Ionization Energy. The ionization energy tends to increase as one moves from left to right across a given period or up a group in the periodic table.

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3 years ago
Newton's Law of Gravity says that any the effect of gravity between two objects depends on what two factors?
maw [93]
The masses of the objects and the distance between them
-hope it helps
8 0
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7 organic compounds of plant origin​
Nat2105 [25]

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Among the numerous types of organic compounds, four major categories are found in all living things carbohydrates, lipids, proteins and nucleic acids.

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