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2 years ago

Help me now plssssssss i will give brainliest!!!!!!!!!!!!!!!!!!!!!!!

Chemistry

1 answer:

yanalaym [24]2 years ago

4 0

Answer:

products are copper and aluminium chloride

reactants are aluminium and copper chloride

Explanation:

products are formed at the end of a reaction

reactants are what's reacting to form the products ie the things at the start of the equation

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Only number 6 and number 9 please and thank you

arsen [322]

Number 9 adding oil lubricates the chain making it easier to pedal. Also the oil prevents rusting

6 0

3 years ago

Silicon carbide (SiC) is an important ceramic material made by reacting sand (silicon dioxide, SiO2) with powdered carbon at a h

makkiz [27]

Answer:

Percent yield of SiC is 77.0%.

Explanation:

Balanced reaction: $SiO_{2}+3C\rightarrow SiC+2CO$

Molar mass of SiC = 40.11 g/mol

Molar mass of $SiO_{2}$ = 60.08 g/mol

So, 100.0 kg of $SiO_{2}$ = $\frac{100.0\times 10^{3}}{60.08}$ moles of $SiO_{2}$ = 1664 moles of $SiO_{2}$

According to balanced equation, 1 mol of $SiO_{2}$ produces 1 mol of SiC

Therefore, 1664 moles of $SiO_{2}$ produce 1664 moles of SiC

Mass of 1664 moles of SiC = $(1664\times 40.11)g$ = 66743g = 66.74 kg (4 sig. fig.)

Percent yield of SiC = [(actual yield of SiC)/(theoretical yield of SiC)] $\times 100$ %

= $\frac{51.4kg}{66.74kg}\times 100$ %

= 77.0%

4 0

2 years ago

Back titration experiment

iren2701 [21]

Answer:

Ouchie

Explanation:

4 0

3 years ago

3.7x10^7 and 3.30x10^8 written in scientific notation

kodGreya [7K]

Answer:

1) 37100000

2) 330000000

Explanation:

1) 3.7 x 10^7 = 37100000

2) 3.30 x 10^8 = 330000000

(Hope this helps can I pls have brainlist (crown)☺️)

3 0

2 years ago

What is the mass number of 80Br

Amanda [17]

Mass number of an element write in bottom of it!

So, there 80 would be the mass number of ₈₀Br.

Hope this helps!

4 0

3 years ago