A scoop of potassium oxide was placed in

Chemistry

1 answer:

kotykmax [81]3 years ago

8 0

Answer:

I just need points sorry

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Balance the following equation and

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2 years ago

The anion of which element has a –1 charge?

vovangra [49]

An anion is a negatively charged ion. An element can become an anion if it takes an extra electron such that it has one more electron than protons.
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3 years ago

A science teacher has a supply of 50% sugar solution and a supply of 80% sugar solution. How much of each solution should the te

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You can establish a system of two equation with two variables.

Varibles are:
V1 = volume of the 50% sugar solution
V2 = volumen of the 80% sugar solution

Equations:
Balance of sugar:

Sugar from 50% solution: 0.5*V1
Sugar from 80% solution: 0.8*V2
Sugar in the final solution (mix): 0.6 * 105 = 63

1) 0.5V1 + 0.8V2 = 63

Final volume = volume of 50% solution + volume of 80% solution

2) V1 + V2 = 105

From (2) V1 = 105 - V2

Substitue in (1)

0.5 (105 - V2) + 0.8 V2 = 63

52.5 - 0.5V2 + 0.8V2 = 63

0.3 V2 = 63 - 52.5

0.3 V2 = 10.5

V2 = 10.5/0.3
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Answer: 70 mL of the 50% solution and 35 mL of the 80% solution.

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3 years ago

1. Which number is more accurate if the correct number is 3.5. Is it 3.1, 3.3, 3.6, or 4.0?

natta225 [31]

Seems to be 3.6 since it’s closer by 1, As for 4.0 it would be 5 more.

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3 years ago

Read 2 more answers