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german
3 years ago
10

Many of the stars we see in the night sky are called blue giants. They put out more energy and burn millions of times brighter t

han the Sun. Why does the Sun appear much larger and brighter from Earth than blue giant stars?
Chemistry
1 answer:
Bumek [7]3 years ago
6 0

Answer:

Because it is closer to earth than the other blue giant stars.

Explanation:

The sun is closer to earth than any other big star which means we see it bigger.

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What is the lightest particle in the following 1)electron 2)proton 3)neutron 4)photon
Anuta_ua [19.1K]

Answer:

1) Electron

Explanation:

It carries a negative charge of 1.602176634 × 10−19 coulomb, which is considered the basic unit of electric charge. The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton.

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2 years ago
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What particle has almost mo mass
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Photon has no mass at all
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A NaOH (aq) stock solution was created by dissolving 3.88 g NaOH in water to create a 100.00 mL solution. What is the concentrat
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I have don 3 so far

Explanation:

Brainlyis the best

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2 years ago
Acceleration usually has the symbol a. It is a vector. What is the correct way
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Answer:

A

Explanation:

it has an arrow symbolizing direction because a vector quantity has both magnitude and direction.

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3 years ago
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What is the concentration of H+ ions at a pH = 2?
erastova [34]

Answer:

0.01M = [H⁺]; 1x10⁻¹²M = [OH⁻]; Ratio is: 1x10¹⁰

Explanation:

pH is defined as -log [H⁺]

For a pH of 2 we can solve [H⁺] as follows:

pH = -log [H⁺]

2 = -log [H⁺]

10^-2 = [H⁺]

<h3>0.01M = [H⁺]</h3>

Using Keq of water:

Keq = 1x10⁻¹⁴ = [H⁺] [OH⁻]

1x10⁻¹⁴ / 0.01M = [OH⁻]

<h3>1x10⁻¹²M = [OH⁻]</h3><h3 />

The ratio is:

[H⁺] / [OH⁻] = 0.01 / 1x10⁻¹² =

<h3>1x10¹⁰</h3>

7 0
2 years ago
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