3 years ago

How are mass and gravitational pull related? in your own words

Chemistry

1 answer:

katrin [286]3 years ago

5 0

Answer:

they are not realted at all

Explanation:

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List the FOUR examples of physical changes shown in the video. Why are these physical changes?

s344n2d4d5 [400]

Explanation:

A physical change is a change that alters the physical properties of matter most especially the state and the form. This change has the following attributes.

it is easily reversible
leads to the production of no new kinds of matter
involves no change in mass
requires little energy

Therefore, some of the examples of physical changes are:

boiling
melting
freezing
condensation
sublimation
magnetization of metals
breaking of glass
cutting of wood

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2 years ago

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2 years ago

The psychoactive drug sold as a methamphetamine - "speed" (c10h15n) - undergoes a series of reactions in the body; the net resul

Phoenix [80]

Answer: The coefficient of nitrogen in the given equation is 2.

Explanation: The reaction for the oxidation of methamphentamine with oxygen gas in the body is given by:

$4C_{10}H_{15}N(s)+55O_2(g)\rightarrow 40CO_2(g)+30H_2O(l)+2N_2(g)$

By Stoichiometry,

4 moles of methamphentamine reacts with 55 moles of oxygen gas to produce 40 moles of carbon dioxide gas, 30 moles of water and 2 moles of nitrogen gas.

Coefficient of $C_{10}H_{15}N=4$