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2 years ago

Who was the first scientist to measure speed as distance over time?

Chemistry

1 answer:

777dan777 [17]2 years ago

8 0

Galileo was the first scientist to measure speed as distance over time.

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Physical properties can be used to describe matter. Some properties are dependent on the amount of matter present. All BUT ONE o

Masteriza [31]

A. the density stays the same unless given an external catalyst

5 0

2 years ago

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Which conversion factor do you use first to calculate the number of grams of CO 2 produced by the reaction of 50.6 g of CH 4 wit

Brilliant_brown [7]

Answer:

Thus, first conversion of mass of methane into moles by dividing it with 16.04 g/mol

Mass = 138.63 g

Explanation:

The balanced chemical reaction is shown below:-

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Firstly the moles of methane gas reacted must be calculate as:-

Given, mass of methane = 50.6 g

Molar mass of methane gas = 16.04 g/mol

The formula for the calculation of moles is:-

$Moles=\frac{Mass\ taken}{Molar\ mass}=\frac{50.6}{16.04}\ mol=3.15\ mol$

Thus, from the reaction stoichiometry,

1 mole of methane produces 1 mole of carbon dioxide

Also,

3.15 mole of methane produces 3.15 mole of carbon dioxide

Moles of $CO_2$ = 3.15 mole

Molar mass of $CO_2$ = 44.01 g/mol

Mass = Moles*Molar mass = $3.15\times 44.01$ g = 138.63 g

3 0

2 years ago

Thermal energy always moves from where there is ____of it to where there is ____of it until ____.

DENIUS [597]

Answer:

Thermal energy always moves from where there is more of it to where there is less of it until distributed.

Explanation:

Its true, just don't know if its correct for your assignment

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2 years ago

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What organelle or organelles store food or pigments

Effectus [21]

A.chlorophyll plastid,ribosome,rough endoplasmic reticulum. B.green pigment that absorbs light for photosynthesis, a plant cell structure that stores food of contain pigments, the construction site for protein s ribosomes can be found in the surface of this organelle.

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2 years ago

What kind of elements do not give, receive or share electrons?

galina1969 [7]

The group of elements on the periodic table that does not participate in chemical bonding at all would be the noble gas elements. These either do not give, receive, and or share electrons.

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3 years ago