3 years ago

Why can Sirius be seen in the night sky? Thank you who ever answers

Chemistry

1 answer:

ra1l [238]3 years ago

7 0

Answer:

Because the star has a higher luminosity/intrinsic brightness than other stars.

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Hockey is a sport in which players use hockey sticks to push a puck across smooth ice. At practice one day, three different-colo

motikmotik

Answer:

The purple hockey puck; it takes a stronger force to slow down a more massive object than to speed it up.

Explanation:

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2 years ago

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BARSIC [14]

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3 years ago

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Write the molecular formula for a compound with the possible elements C, H, N and O that exhibits a molecular ion at M

liberstina [14]

Answer:

$= \mathbf{C_3H_6O}$

Explanation:

From the given information, since the molecular mass of the ion M+ is not given;

Let's assume M+ = 58.0423

So, by applying the 13th rule;

we will need to divide the mass by 13, after dividing it;

The quotient n = no. of carbon; &

The addition of the quotient (n) with the remainder r = no. of hydrogen.

So;

$\dfrac{58}{13}= 4 \ remainder \ 6$

So;

$C_nH_{n+r} = C_4H_{4+6}$

$= C_4H_{10}$

From the given information; we have oxygen present, so since the mass of oxygen = 16, we put oxygen in the molecular formula by removing $CH_4$ . Also, since the mass is an even number then Nitrogen is 0.

So, we have:

$= \mathbf{C_3H_6O}$

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2 years ago

What is one result of a chemical change?

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A new material is formed in <span>result of a chemical change. Typically, the chemical changes always make the new material.</span><span />

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3 years ago

G An example of an element is ____.

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Pipes are made of the element Lead so the answer should be d) lead pipe

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