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aliya0001 [1]
3 years ago
15

3. What is SI system? Why has SI system been developed? Give reasons​

Chemistry
2 answers:
Kamila [148]3 years ago
8 0
It allows people in different places and different countries to use the same units, avoid mistakes and understand each other more easily. The common base 10 of all units makes it easier and has more accurate calculations that are made without cumbersome conversion factors.
Serhud [2]3 years ago
8 0
This text is from my science textbook. Hope it helps you




P.S PLS MARK AS BRAINLIST

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A 3.8-mol sample of KClO3 was decomposed according to the equation. How many moles of O2 are formed assuming 100% yield?
kari74 [83]

Answer:

5.7 moles of O2

Explanation:

We'll begin by writing the balanced decomposition equation for the reaction. This is illustrated below:

2KClO3 —> 2KCl + 3O2

From the balanced equation above,

2 moles of KClO3 decomposed to produce 3 moles of O2.

Next, we shall determine the number of mole of O2 produced by the reaction of 3.8 moles of KClO3.

Since 100% yield of O2 is obtained, it means that both the actual yield and theoretical yield of O2 are the same. Thus, we can obtain the number of mole of O2 produced as follow:

From the balanced equation above,

2 moles of KClO3 decomposed to produce 3 moles of O2.

Therefore, 3.8 moles of KClO3 will decompose to produce = (3.8 × 3)/2 = 5.7 moles of O2.

Thus, 5.7 moles of O2 were obtained from the reaction.

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3 years ago
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Balance this equation<br> Pb(NO3)2+Na2(CrO4)=Pb(CtO4)+Na(NO3)
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I'm guessing you mean Cr (Chromium) in the product instead of Ct.

<span>Pb(NO3)2 + Na2(CrO4) = Pb(CtO4) + 2Na(NO3)</span>
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explanation:
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