3 years ago

How can different samples of one type of rock,such as marble, vary in physical properties

Chemistry

1 answer:

iogann1982 [59]3 years ago

3 0

https://do-work-zone.com/?mref=hello69

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According to "When Is a Planet Not a Planet?" scientists determined that Pluto was not a planet. What were the causes that led t

kap26 [50]

C.
D.
E.

These should be the main reasons. As Pluto was mainly categorized in dwarf planet for not being able to satisfy the last statement which states that it should have a fixed neighbourhood with other planets.

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3 years ago

Where are the protons and neutrons and electrons located in an atom?

Rus_ich [418]

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a metal worker uses a cutting torch that operates by reacting acetylene gas, C2H2(g), with oxygen gas, O2(g), as shown in the un

harkovskaia [24]

Answer:

650 grams

Explanation:

Given that acetylene gas reacts with oxygen to produce caobon dioxide, water and heat and the unbalnced equation is

$C_2H_2(g)+O_2(g) \rightarrow CO_2(g) + H_2O(g)+ heat$

Gram-formula mass of $C_2H_2= 26$ g/mol

So, mass of 1 mole of acelylene is 26 grams

Therefore, mass of 25 moles of acelylene=25x26=650 grams

Hence, the mass of 25 moles of acelylene is 650 grams

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2 years ago

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Which planet likely has flowing liquid metallic hydrogen as the source of its magnetic field?

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Your answer is Saturn.

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3 years ago

Select all that apply.

stich3 [128]

Answer:

air pollution and potential reactor accidents

Explanation:

i pretty sure on those two

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