<u><em>Answer: 6.3 *The answer must be have a decimal point.*</em></u>
Explanation:
First, subtract by the numbers. Subtract it's going to be find the difference between the numbers.
You can also add by the numbers.
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Expanded Exponential Form:
<span><span>3 × </span></span>
<span><span>+<span>3 × </span></span></span>
<span><span>+<span>7 × </span></span></span>
<span><span>+<span>0 × 1</span></span></span>
<span><span>+<span>6 × </span></span></span>
<span><span>+<span>0 × </span></span></span>
<span><span><span><span>
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Answer:
Step-by-step explanation:
Final concentration % = [grams of salt / mililiters of solution] * 100
grams of salt = grams of salt from solution 1 + grams of salt from solution 2
grams of salt from solution 1 = mililiters * %/100 = 80 mililiters * 0.25 g/mililiters = 20 g
grams of salt from solution 2 = mililiters *%/100 = x*0.10 g/mililiters = 0.1x
mililiters of final solution = mililiters from solution 1 + mililiters from solution 2
mililiters of final solution = 80 mililiters + x mililiters
=> Final concentration, % = [0,10x + 20 g] / [x + 80 mililiters] * 100
1. 7 hours and 40 min
2. 1 hour and 24 min
3. 4 hours and 45 min
4. 8 hours and 48 min
