How many hours per year does a high school student spend in school? hours per year

Chemistry

1 answer:

Liono4ka [1.6K]3 years ago

4 0

Answer:

1,260 is your answer plz mark if this right

Explanation:

You might be interested in

Is gunpowder a homogenous mixture or a heterogenous mixture? Explain why.

inysia [295]

Gunpowder is a heterogenous mixture,

Reason : the composiotion of the mixture is not uniform throughout, the mixture can be separated by a suitable method , and finally , it composes of charcoal, sulfur and potassium nitrate which is not homogeneous mixture.

4 0

1 year ago

What happened to the FREQUENCY of the wave as the instrument got bigger?

Archy [21]

Answer:

The wavelengths at which resonance occurs are proportional to the length of the instrument, so you can play different notes by changing the length. In general the larger the instrument the longer the wavelength of the fundamental and the lower the frequency range of the instrument.

Explanation:

4 0

3 years ago

How does rock candy relate to the igneous rock formation?

sveta [45]

Answer:

The candy is heated then cooled, turning solid like a igneous rock.

Explanation:

6 0

2 years ago

The process of pouring a mixture though a filter to catch the larger particles while allowing the smaller particles to pass thro

Annette [7]

This process is called filtration. This process is a solid-fluid separation by the use of a medium wherein only the fluid (gases or liquids) can go through it. The medium is called the filter while the fluid that passed through the filter is called the filtrate. The solid particles are the large particles which cannot pass through the filter.

4 0

3 years ago

Question 7-Which of the following is not an acid-base neutralization reaction?

docker41 [41]

Answer:- It is choice D. $H_2SO_4+2NaCl\rightarrow 2HCl+Na_2SO_4$

Explanations:- In general, a neutralization reaction is the reaction of an acid with base to form salt and water.

in first reaction the reaction is taking place between ammonia(a base) and hydrochloric acid(an acid) to form their salt(ammonium chloride). So, it is an acid-base neutralization reaction.

In second reaction, sodium hydroxide(a base) is reacting with acetic acid(an acid) to form their salt(sodium acetate) and water. So, it is an acid-base neutralization reaction.

In third reaction, Nitric acid is reacting with calcium hydroxide(a base) to form a salt(calcium nitrate) and water. So, it is an acid-base neutralization reaction.

In fourth reaction, sulfuruc acid is reacting a sodium chloride(a salt) to give a double replacement reaction. It is not an acid-base neutralization reaction as it's not taking place between an acid and base.

So, the correct choice is D. $H_2SO_4+2NaCl\rightarrow 2HCl+Na_2SO_4$

7 0

3 years ago

Read 2 more answers