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Scrat [10]
3 years ago
12

Convert the following into ordinary numbers 9.640 x 10-5

Chemistry
1 answer:
ziro4ka [17]3 years ago
6 0

Answer:

0.0000964

Explanation:

9.640  \times {10}^{ - 5}   \\ = 0.00009640 \\  = 0.0000964

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Bismuth oxide reacts with carbon to form bismuth metal:
lesya692 [45]

Answer:

(a) 1.92 moles of Bi produced.

(b) 80.6 grams

Explanation:

             Balanced equation: Bi2O3(s) + 3C(s) → 2Bi(s) + 3CO(g)

1st find moles of Bi2O3:

Bi2O3 has Mr of 466 and mass of 447 g

\hookrightarrow moles = \frac{mass}{Mr}

\hookrightarrow moles = \frac{447}{466}

\hookrightarrow moles = 0.959227

2nd find moles of Bi:

Bi2O3 : 2Bi

→       1 : 2 ------ this is molar ratio.

→ 0.959227 : (0.959227)*2

→ 0.959227  : 1.91845

→ 0.959227  : 1.92

Therefore 1.92 moles of Bi was produced.

3rd Find moles of 3CO:

Bi2O3 : 3CO

      1 : 3

0.959227 : (0.959227 )*3

0.959227 : 2.87768

3CO has 2.87768 moles and we know the Mr is 28.

\hookrightarrow mass = moles * Mr

\hookrightarrow mass = 2.87768 * 28

\hookrightarrow mass =80.575 g

Therefore 80.575 grams of CO was produced.

8 0
3 years ago
Read 2 more answers
Can you please help me !!
ioda

Answer:

Explanation:

A)  O2 (non polar covalent)

B)  HF  (polar covalent)

C) NaCl (because its ionic)

im not 100% sure hope it helps

7 0
3 years ago
Which equation should you use to find the final concentration?
Whitepunk [10]

Answer:A

Explanation:

It’s A

6 0
4 years ago
In a redux reaction why does an <br> element oxidation number decreases
Olin [163]

Answer:

Decreases

Explanation:

An element's oxidation number decreases because it gained electrons.

7 0
3 years ago
How many moles are consumed ^
harkovskaia [24]
0000000000000000000000000000
3 0
3 years ago
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