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Iteru [2.4K]
3 years ago
6

How doi find half years

Chemistry
1 answer:
IrinaVladis [17]3 years ago
5 0
Can you post the question
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Jack an investigator wants to prove that a certain suspect was present at the crime scene when the crime was committed. What kin
grin007 [14]

Answer:

eye witnesses, dna, fingerprints, hair, time stamped photos/ videos

Explanation:

:)

5 0
3 years ago
How many moles are there in 2.00 x 1023 molecules of LiOH?​
Tanya [424]

Answer:

Moles de LiOH= 0.33212 Moles

Explanation:

1 Mol of LiOH -->6.022*10^23 molecules of LiOH

therefore

2*10^{23}~molecules ~of~LiOH=\frac{2*10^{23}}{6.02*10^{23}}Moles~of#LiOH

5 0
3 years ago
What is an isotope? Give an example (use the full name! Simply listing the element is not a correct answer!)
Alina [70]

Answer:

Isotopes are variations of chemical elements that have the same number of protons but different number of neutrons.

Explanation:

3 0
3 years ago
A substance X contains 10 gram of calcium carbonate calculate the number of mole of calcium carbonate present in X ​
Tasya [4]

\LARGE{ \boxed{  \rm{ \red{Required \: answer}}}}

☃️ Chemical formulae ➝ \sf{CaCO_3}

<h3><u>How to find?</u></h3>

For solving this question, We need to know how to find moles of solution or any substance if a certain weight is given.

\boxed{ \sf{No. \: of \: moles =  \frac{given \: weight}{molecular \: weight} }}

<h3><u>Solution:</u></h3>

Atomic weight of elements:

Ca = 40

C = 12

O = 16

❍ Molecular weight of \sf{CaCO_3}

= 40 + 12 + 3 × 16

= 52 + 48

= 100 g/mol

❍ Given weight: 10 g

Then, no. of moles,

⇛ No. of moles = 10 g / 100 g mol‐¹

⇛ No. of moles = 0.1 moles

☄ No. of moles of Calcium carbonate in that substance = <u>0.1 moles</u>

<u>━━━━━━━━━━━━━━━━━━━━</u>

3 0
4 years ago
Read 2 more answers
Suppose the data formed a line with a steeper slope. For the same change in temperature, how would the change in volume compare?
bogdanovich [222]
Substances can change state, usually when they are heated or cooled. For example, liquid water turns into steam when it is heated enough, and it turns into ice when it is cooled enough. ... The closeness, arrangement and motion of the particles in a substance change when it changes state.
4 0
3 years ago
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