<span>Day and night are not exactly of equal length at the time of the March and September equinoxes. The dates on which day and night are each 12 hours occur a few days before and after the equinoxes.</span>
Answer:
There are 1000 mg in 1. g
There are 1000 g in 1 kg
Each students needs 2,250 mg of clay
Explanation:
In order to determine the amount of how many kilograms to order, the teacher will need to find out the total mass of clay required by the students and then the teacher will have to convert the total mass to the units required for the purchase.
The teacher would have to find out how many milligrams make one kilogram as follows
1 kg = 1000 g
1 g = 1000 mg
Therefore, 2,250 mg = 2250/1000 g = 2.25 g
2.25 g = 2.25/1000 kg = 0.00225 kg.
Answer: 2.7kg/L
Explanation:
1 gram per cubic centimeter g/cm3= 1.00 kilograms per liter kg/l
Answer:
In 1 mole of HCl is 36,46 grams
Explanation:
Molar mass of HCl = 1,01 (H) + 35,45 (Cl) = 36,46 g/mole
We use the formula n=m/M to calculate the mass
1 mole = m/ 36,46g/mol
mass = 36,46g/mole* 1 mole = 36,46 grams
Answer:
V = 56.816 cm³
Explanation:
Given that,
The measured value of the cylinder is 54.5 cm³
The percent error in the measurement of the volume is 4.25%
We need to find the actual volume of the cylinder.
Firstly, we can find the error in the calculation as follows :
It is mentioned in the problem that, the teacher told her that she was 4.25% too high in her determination of the volume. It would mean that,
Total volume = 54.5 + 2.316 = 56.816 cm³
Hence, the actual volume of the cylinder is 56.816 cm³.
