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diamong [38]
3 years ago
14

What is significant figure of 0.0048?​

Chemistry
2 answers:
DaniilM [7]3 years ago
7 0

Answer:

2

The zeroes before a non zero number are not counted ...

Bad White [126]3 years ago
5 0

Answer:

whate is night blindness ? write its two symptoms

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Convert 1.75 g/mL to the unit g/m3. Answer Choices: (1.75 x 106 g/m3), (1.75 x 102 g/m3), (1.75 x 10-2 g/m3), (1.75 x 10-6 g/m3)
Marta_Voda [28]
 Answer : 1750000g/cm3
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The number of significant figures in 369,132,000 is 6

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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%

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3 years ago
Identity the decomposers in this food web.<br>​
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dont know what the web looks like but mushrooms are decomposers

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Why is light helpful? You can just give one reason
hoa [83]
Light is helpful because it allows us to see things around us.
I hope this helps :)
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