2 years ago

Is this a compound, element, or mixture????

Chemistry

1 answer:

olga_2 [115]2 years ago

3 0

Answer:

element

Explanation:

hope this helps

You might be interested in

Which of the following is the Lewis structure for CO2?

velikii [3]

Answer:

The CO2 Lewis structure has two double bonds going from carbon to the oxygen atoms. According to the octet rule, each oxygen atom needs to bond twice and the carbon atom needs to bond four times.

4 0

2 years ago

A student needs to prepare 100. mL of 0.612 M Cu(NO3)2 solution. What mass, in grams, of copper(II) nitrate should the student u

Temka [501]

Answer: 11.5 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution

$Molarity=\frac{n\times 1000}{V_s}$

where,

Morality = 0.612 M

n= moles of solute

$V_s$ = volume of solution in ml = 100 ml

Now put all the given values in the formula of molarity, we get

$0.612=\frac{n\times 1000}{100ml}$

$n=0.0612moles$

$Mass={\text {moles of solute }}{\times {\text {molar mass}}=0.0612moles\times 187.56g/mol=11.5g$

Therefore, the mass of copper (II)nitrate required is 11.5 grams

3 0

2 years ago

An indicator of average kinetic energy is

Paha777 [63]

Answer:

PRESSURE is right answer .

Explanation:

4 0

2 years ago

Which of the following is an example of positive acceleration? Q A boy running from his house around the block and ending up bac

Natalija [7]

The answer is A track star speeding up as he sprints to the finish line.

8 0

2 years ago

How many moles of H2SO4 are needed to prepare 200 mL of a 1.0 M solution?

jok3333 [9.3K]

The answer is 0.2moles

4 0

2 years ago