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Karo-lina-s [1.5K]
3 years ago
11

When a high mass main sequence star runs out of both hydrogen and helium in its core, the core begins to fuse

Chemistry
1 answer:
Umnica [9.8K]3 years ago
4 0

Answer:

i guess it explodes

Explanation:

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Even though lead is toxic, lead compounds were used in ancient times as white pigments in cosmetics. What is the percentage of l
Gekata [30.6K]

<u>Answer:</u> The mass percent of lead in lead (IV) carbonate is 63.32 %

<u>Explanation:</u>

The given chemical formula of lead (IV) carbonate is Pb(CO_3)_2

To calculate the mass percentage of lead in lead (IV) carbonate, we use the equation:

\text{Mass percent of lead}=\frac{\text{Mass of lead}}{\text{Mass of lead (IV) carbonate}}\times 100

Mass of lead = (1 × 207.2) = 207.2 g

Mass of lead (IV) carbonate = [(1 × 207.2) + (2 × 12) + (6 × 16)] = 327.2 g

Putting values in above equation, we get:

\text{Mass percent of lead}=\frac{207.2g}{327.2g}\times 0100=63.32\%

Hence, the mass percent of lead in lead (IV) carbonate is 63.32 %

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3 years ago
If I add water to 100 mL of a 0.15 M NaOH solution until the final volume is 250 mL, what will
kkurt [141]

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B

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He diagram shows a device that uses radio waves.
babymother [125]

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Your answer is B. Capture, amplify and demodulate waves.

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7 0
2 years ago
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The ground state of an electron is the least stable energy state of an atom
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I’m learning about heredity
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1. (See explanation)

2. 46. 23 from the mother’s egg and 23 from the father’s sperm.

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