Answer:
(b) 50 mL = 0.50 L
Explanation:
Metric system is a measurement system that uses decimalized in all their factor, which mean every rank difference can be expressed as a factor of 10(deci=10). The decimalized number makes it easier to convert the unit, make the metric system easier to be learned and used.
The Metric system will use a prefix to determine the factor, a kilo is 1000, mili is 1/1000, centi is 1/100, pico is 1/10^12.
(a) 1 km = 1000 m
True, kilo is 1000
(b) 50 mL = 0.50 L
This option is false. mili is 1/1000, so 50/1000= 0.05 L
(c) 125 mm = 12.5 cm
True, mili is 1/1000 while centi is 1/100.
So 125mm will be: 125mm * 100mm/1000cm= 12.5cm
(d) 23 pm = 0.000 000 000 023 m
True, pico is 10^-12
The desirable soil pH for corn ranges from 5.8 to 7.0.
Answer:
55.845 u
Explanation:
Fe, iron, has 29 neutrons and a atomic mass of 55.845 u
The compound with a chemical formula of C₃H₈ is propane. The subscripts actually represent the number of the individual atoms in 1 particle of the compound. Since there are the same number of atoms per mole of any substance, the subscript can also represent the moles. Through stoichiometric calculations, the solution is as follows:
Moles of Carbon = 11.2 moles H * 3 mol C/8 mol H = <em>4.2 moles</em>
