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vova2212 [387]
2 years ago
6

Galaxies are composed of many different objects. What kind ok objects make up most of the visible matter in a galaxy?

Chemistry
2 answers:
seraphim [82]2 years ago
8 0
Stars you could include the sun to it is a star anyway
Arte-miy333 [17]2 years ago
5 0
Stars make up most of the visible matter
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How many joules of energy are made by the loss of 100kg of mass using the formula E=mc2? please help!!!
asambeis [7]

Answer:

E = 3 × 10¹⁰ J

Explanation:

Mass, m = 100 kg

We need to find energy made by the loss of 100 kg of mass. The formula between the mass and energy is given by :

E = mc²

Where c is speed of light

Putting all the values, we get :

E = 100 kg × (3×10⁸ m/s)²

= 3 × 10¹⁰ J

So, the required energy is 3 × 10¹⁰ J.

6 0
3 years ago
Its Accelerated Science 8th grade​
skelet666 [1.2K]

In my opinion I believe it would be motion because depending on how fast the person is going it would determine the outcome of the race

8 0
2 years ago
How many grams of carbon are in 0.24 moles of carbon?
Ronch [10]

Answer:

I'm converting this if I could remember how

2.882568

2 110321/ 125000

T-T sorry if I'm wrong I have bad memory

so I recommend not using my answer at all,

if that is even how y'all write it.

4 0
2 years ago
Choose all the answers that apply. What do all cells do? reproduce contain hereditary information have a nucleus break down food
Travka [436]

Answer:

contain hereditary information

break down food into energy

Explanation:

Hereditary information is contained in genes and genes are found inside the cell. This implies that the cell contains hereditary information of organisms. This hereditary information is passed on during cell division from parent to daughter cells.

Metabolism occurs in the cells. The cells use oxygen to break down food materials to produce energy.

5 0
3 years ago
Calculate the percentage composition of Mg3 (Po4)2
lutik1710 [3]
Mg3(PO4)2 - the molar mass would be 262g/mol, which is 100%

Atomic mass of Mg is 24, since we have 3Mg we multiply by 3 and get a mass of 72

262 : 100% = 72 : x%

x = 72*100 / 262

x = 27.5%

And do that for every element — get the molar mass of P and multiply by 2, use a ratio, and get the molar mass of O and multiply by 8 and use ratios :)
7 0
2 years ago
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