Answer:
4.74 × 10³ mg
Explanation:
Given data
- Health risk limit for chloroform in groundwater: 60.0 g/L
- Volume of the sample of groundwater: 79.0 mL = 79.0 × 10⁻³ L
The maximum mass of chloroform that there could be in the sample of groundwater to meet the standards are:
79.0 × 10⁻³ L × 60.0 g/L = 4.74 g
1 gram is equal to 10³ milligrams. Then,
4.74 g × (10³ mg/1 g) = 4.74 × 10³ mg
I think it’s B
Sorry if I’m wrong
Answer:
Explanation:an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid non-metals or semiconductors
Until it is surrounded by love. No, just kidding. the answer is "8 valence electrons"
In four weeks of commuting to school, it is expected the student saves a total of $13.32 if the prices went down from $2.49/gallon to $2.19.
<h3>How many gallons of gasoline does the student need each day and each week?</h3>
It is known, the total distance each day is 40 miles; moreover, the car requires 1 gallon of gasoline per 18 miles. Based on this, let's calculate the number of gallons of gasoline required:
- 40 miles / 18 miles = 2.22 gallons of gasoline
Now, if the student requires 2.22 gallons of gasoline everyday, the total number of gallons of gasoline per week is:
- 2.22 x 5 days = 11.1 gallons of gasoline
- 11.1 x 4= 44.4 gallons per month
<h3>How much will the student save?</h3>
Money spent with the regular gasoline price
- 44.4 gallons of gasoline x $2.49 = $110.55
Money spend with the new price:
- 44.4 gallons of gasoline x $2.19 = $97.23
- $110.55-$97.23 =$13.32
Learn more about gasoline price in: brainly.com/question/13898342
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