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2 years ago

GIVING 40 POINTS PLZ HELP!!!!!!!!

Chemistry

2 answers:

Troyanec [42]2 years ago

8 0

Answer:

to find heart rate put 2 fingers on your wrist or neck also what one do you need help with

Explanation:

yuradex [85]2 years ago

4 0

To find heart rate put 2 fingers on you wrist or neck

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Join anyone<br><br>nzm-ogfc-ate

Rus_ich [418]

Answer:

$not \: inrested$

Explanation:

$thnxx \: for \: \\ pts$

4 0

3 years ago

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How many atoms of titanium are there in 0.125 mole of each of the following?a. ilmenite, FeTiO3b. titanium(IV) chloridec. Ti2O3d

Gekata [30.6K]

Answer:

a. 7.528x10²² atoms Ti

b. 7.528x10²² atoms Ti

c. 1.5055x10²³ atoms Ti

d. 2.258x10²³ atoms Ti

Explanation:

Using the molecular formula of the structures, we can determine the moles of titanium in 0.125 moles of each compound. With moles of titanium we can convert these to atoms using Avogadro's number as follows:

a. FeTiO₃: 1 mole of Ti per mole of FeTiO₃.

Moles of Ti are 0.125 moles. Atoms are:

0.125 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>7.528x10²² atoms Ti</h3>

b. Titanium (IV) chloride = TiCl₄: 1 mole of Ti per mole of TiCl₄.

Moles of Ti are 0.125 moles. Atoms are:

0.125 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>7.528x10²² atoms Ti</h3>

c. Ti₂O₃: 2 moles of Ti per mole of Ti₂O₃.

Moles of Ti are 2*0.125 moles = 0.25 moles. Atoms are:

0.25 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>1.5055x10²³ atoms Ti</h3>

a. Ti₃O₅: 3 mole of Ti per mole of Ti₃O₅.

Moles of Ti are 3*0.125 moles = 0.375 moles of Ti. Atoms are:

0.375 moles Ti * (6.022x10²³ atoms / 1 mole) =

<h3>2.258x10²³ atoms Ti</h3>

7 0

4 years ago

How many milliliters of a 0.223 M KNO3 solution contain 0.250 moles of KNO3?

anyanavicka [17]

Answer:

1121.08 millilitres of 0.223 M $KNO_{3}$ solution contains 0.250 moles of $KNO_{3}$ .

Explanation:

The formula for molarity of a solution:

$Molarity=\frac{n}{V}\\ where,n=number\: of\:moles\\V=volume\:of\:solution\:in\:L$

Molarity = 0.223 M

n = 0.250 moles

$V=\frac{n}{Molarity}=\frac{0.250}{0.223}=1.12108L=1121.08mL$

Therefore, 1121.08 millilitres of 0.223 M $KNO_{3}$ solution contains 0.250 moles of $KNO_{3}$ .

6 0

3 years ago

How many grams of NaCI are present in 11.00 moles

Amiraneli [1.4K]

Answer: 642.93 g of NaCl

Explanation:

11.00 mol NaCl x __58.448 g__ = 642.928 g of NaCl

1 mol NaCl

I would round to 642.93 g of NaCl, but round to however many significant figures asked for.

My chemistry teacher made this map (image attached) to teach us how to do conversions. Just follow the map. I think it's pretty straight forward. I hope this helps.

7 0

3 years ago

Which is right pls right answers only the one thats right will get brailiest

Leviafan [203]

Answer:

Explanation:

the last one thats all i know

5 0

3 years ago

Read 2 more answers