Answer:
36miles/hour
Explanation:
speed =distance÷time taken
102miles/2 5/6
102÷17/6
102×6/17
=36miles per hour
Answer:
Explanation:
In the first nucleus we are told that there are two protons and one neutron. Let us remember that the mass number = number of protons + number of neutrons.
This implies that, for the first specie the mass number is 3, for the second specie the mass number is 6 and the third specie has a mass number of 7 and so on. The mass number is indicated as a superscript.
The atomic number is the number of protons in the nucleus of the atom and helps us to identify the atom. It is always written as a subscript as shown.
Answer:
multiple that number
Explanation:
it the right way to do it
Answer:199mL
Explanation:
Let V ml be the volume of blood in animal.
When 1.0 ml sample is added, total volume becomes V+1.0ml. Its activity is 1000 dpm.
After equilibrium, 2.0 ml of the sample had activity of 10 dpm.
Hence, after equilibrium, the activity of V+1.0 ml of blood sample will be 10/2 (V+1.0ml)=1000dpm
Hence, V=199ml.
Answer:
The yield of the purification is 79.7%
Explanation:
Hi there!
5.731 g nickel metal could be produced by the student if the yield of the purification would be 100%. Instead, 4.567 g was obtained. Then, the yield of the purification can be calculated as follows:
4.567 g Ni · (100% / 5.731 g) = 79.7%
The yield of the purification is 79.7%
Have a nice day!
