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SVETLANKA909090 [29]
2 years ago
8

PLEASE HELP ASAP WILL GIVE BRAINLY AND 5 STARS

Chemistry
2 answers:
Dmitriy789 [7]2 years ago
5 0

Answer:

Student A

Explanation:

In order to have a scientific experience that is successful you need to have experiments number 1

Delicious77 [7]2 years ago
5 0

Answer: Its A!

Explanation:

I hope i helped, have a wonderful day!

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A car accelerates from 0 to 72 km/hour in 6.0 seconds. What is the car's acceleration?
MariettaO [177]

Answer: i hope it helps or not

A car increases it's velocity from 0 m/s to 14 m/s in 2 seconds. Amis - Omls ... A racing car's velocity is increased from 44 m/s to 66m/s in 11 seconds. ... 25 km/hr. 1200 km/hr. 2 min. - Kinlarise. 6. A car accelerates from a standstill to 60 km/hr in.

Explanation:

7 0
3 years ago
Read 2 more answers
How many particles would be found in a 12.7 g sample of ammonium carbonate? Show workkk
Sophie [7]

Answer:

7.8286×10²¹ particles

Explanation:

give me brainlist please

3 0
3 years ago
How many formula units of CaO are in 32.7 g of CaO?
zhuklara [117]

Answer:

D) 3.51x10²³ formula units

Explanation:

To know this, we need to calculate the molecular mass of CaO. To do that, let's use the atomic mass of each element of this compound.

Ca: 40.08 g/mol;    O: 16 g/mol

With these given AM, let's calculate the molar mass of CaO:

Mm CaO = 40.08 + 16 = 56.08 g/mol

Now that we have the MM of CaO, it's time to determine the moles of CaO:

moles = mass / MM

moles = 32.7 / 56.08 = 0.5831 moles

Finally to get the formula units, we need to use the Avogadro's number which is 6.02x10²³. According to this number, 1 mole of any substance has this number of atoms, molecules or formula units. So, if we have 0.5831 moles, then the formula units will be:

FU = 0.5831 * 6.02x10²³

<h2>FU = 3.51x10²³ formula units</h2>

Hope this helps

7 0
3 years ago
HELP PLEASE
7nadin3 [17]

Answer:

0.031moles

Explanation:

ok so it would help if I knew the marks but 1 mole = 1000L so if the volume was 31L then if you convert you will get that answer

8 0
3 years ago
Hydrofluoric acid (hf) is used to etch glass (sio2). the products of the reaction are silicon tetrafluoride and water. write the
alexira [117]
4HF + SiO₂ = SiF₄ + 2H₂O
5 0
3 years ago
Read 2 more answers
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