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3 years ago

Which part of a light microscope focuses light onto the specimen through the lens?

Chemistry

1 answer:

finlep [7]3 years ago

5 0

I think its the mirror because condenser helps in allowing the amount of light to pass.

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Identify the following as either a chemical symbol or a chemical formula. CO Co W Be HI

Nat2105 [25]

Answer:

CO is the chemical formula for carbon monoxide.

Co is the chemical symbol for cobalt.

W is the chemical symbol for tungsten.

Be is the chemical symbol for beryllium.

HI is the chemical formula for hydrogen iodide.

Explanation:

Chemical symbols are either written as a single uppercase letter (ex. O) or an uppercase letter and a lowercase letter (ex. Na).

Chemicals can be anything else! For example CO or even somthing like LiIO.

7 0

3 years ago

Lewis is making a model of the Earth-Moon system. He knows that the diameter of the Earth is about four times greater than the d

Leno4ka [110]

D. this is the correct answer because the question is showing a comparison of sizes rather than the actual sizes which eliminates B. A and C have no relevance.

3 0

2 years ago

Read 2 more answers

If there are 4 grams of product produced by the chemical reaction, how many grams of reactant were consumed?

Colt1911 [192]

D 4 grams
i need to write a couple more character for explanation so there

8 0

2 years ago

Read 2 more answers

write a balanced chemical equation for each single replacement reaction that takes place in aqueous solution. write no reaction

Illusion [34]

The question is incomplete, here is the complete question:

Write a balanced chemical equation for each single replacement reaction that takes place in aqueous solution. write no reaction if a reaction does not occur

1.) Zn + PbCl₂

2.) Cu + Fe(NO₃)₂

Answer:

For 1: The reaction does occur.

For 2: The reaction does not occur.

Explanation:

Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element.

The reactivity of metal is determined by a series known as reactivity series. The metals lying above in the series are more reactive than the metals which lie below in the series.

$A+BC\rightarrow AC+B$

For the given options:

For 1:

Zinc is more reactive than lead as it lies above in the series. So, it will displace lead from its chemical equation.

The chemical equation for the reaction of zinc and lead chloride follows:

$Zn+PbCl_2\rightarrow ZnCl_2+Pb$

For 2:

Copper is less reactive than iron as it lies below in the series. So, it will not displace iron from its chemical equation.

The chemical equation for the reaction of copper and iron (II) nitrate follows:

$Cu+Fe(NO_3)_2\rightarrow \text{No reaction}$

3 0

3 years ago

Which of these describes a physical change? Choose the correct answer. You may only choose one.

Molodets [167]

Answer:

A. Wood logs are burned in a fire

Explanation:

5 0

2 years ago