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swat32
4 years ago
9

100 Points!! PLEASE HELP!! PLEASE!! PLEASE!!

Chemistry
2 answers:
Rina8888 [55]4 years ago
7 0

Answer:

(13) billions

Big bang

expanding

quickest

nebula

hydrogen

giants

less,sun

fuel

helium

energy

supernova

white

smaller

neutron

planets/homes

I am Lyosha [343]4 years ago
6 0
Answer:
“...very dense fireball *billions* of years ago”.
“... is often called the *Big Bang*”.
“... is getting bigger or *expanding*”.
“... galaxies are moving away the *quickest*”.
“... gas clouds or *nebula*”.
“... mainly the element *hydrogen*”.
“Red *giants* are stars...”.
“... have a mass *less* than our *Sun*”.
“Hydrogen is the *fuel* of all stars”.
“... combine producing *helium*, releasing lots of *energy* in the process”.
“... only form when a star explodes as a *supernova*”.
“*White* dwarfs are stars...”.
“The Sun was the *smaller* of the two stars...”
“... form a white dwarf or a *neutron* star”.
“... have found new *homes* around other stars”.

Explanation:
Filling in blanks is a series of reading the context around the blank and maybe a little research to double check. I picked these answers because they sounded right and fit the context and also did some research to double check some blanks (eg. Neutron). Sometimes, it’s even trial and error. Nevertheless, keep trying!
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If I understood question correctly,
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3 years ago
If we supply additional heat to a solid in equilibrium with its liquid at the melting point, the thermal energy added is used to
trapecia [35]

Answer:

c. change solid to liquid.

Explanation: Heat is an energy which is present in a substance which is obtained through the transfer of temperature from a substance or material of high temperature to a substance or material of lower temperature. Heat is measured in JOULES OR KILOJOULES,

When heat is applied to a solid material it tends to cause the atomic particles of the solid to have a high kinetic energy making them to loose attachment to each other,when this particles starts to get detached their is the chance of a CHANGE OF STATE WHICH CAN BE FROM SOLID TO LIQUID OR FROM LIQUID TO GAS.

6 0
3 years ago
Choose all the answers that apply.
stepladder [879]

Answer:

The Earth:

  • Is tilted 23 1/2° on its axis .
  • Rotates from west to east .
  • Bulges slightly at the equator .
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Explanation:

The only option that is incorrect is the first one - The Earth has a circular orbit around the sun-. Although the Earth has an orbit around the sun, this one is not circular, it is elliptical, this is similar to an inclined oval, and the planet rotates in this orbit with an inclination on its axis of 23 1/2º.

As well as the shape of the orbit is not circular, the shape of the Earth is not equal in all its parts, it is wider in the equator in comparison with the North and South Poles.

It rotates from west to east in its axis, and it takes 365 1/4 days to complete a round in its orbital.

8 0
3 years ago
you produce 115 grams of water in a combustion reaction. how much methane do you need in grams for this to react?
lora16 [44]

Answer:about 2 grams of methane

Explanation:

idk just got this right

6 0
3 years ago
Calculate the moles of HCl in 15 mL of a 0.50 M solution.
Verizon [17]

Explanation:

\tiny\implies Molarity =  \dfrac{no. \: of \: moles \: of \: solute \times 1000}{volume \: of \: the \: solution \: (in \: ml)}

\tiny\implies 0.50 =  \dfrac{no. \: of \: moles \: of \: solute \times 1000}{15}

\tiny\implies no. \: of \: moles \: of \: solute \times 1000  =  0.50 \times 15

\tiny\implies no. \: of \: moles \: of \: solute \times 1000  =  7.5

\tiny\implies no. \: of \: moles \: of \: solute   =   \dfrac{7.5}{1000}

\tiny\implies  \bf no. \: of \: moles \: of \: solute   =   0.075 \: mol

4 0
3 years ago
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