2.1 kg of sodium bicarbonate is equal to the 2.1 x 10¹² ng of sample. Option D is correct.
Mass is the quantity of the substance in the body or object. The SI unit of mass is Kilogram.
There are other units of measure,
- Milligram: 1 g is equal to the
- Micro-gram: 1 g is equal to
- Nano-gram: 1 g is is equal to
First convert kg to gram,
Since, 1 Kg = 1000 g
2.1 kg = grams of sample
So,
Do the cross multiplication,
Now, convert 2100 g to nano-grams
Since, 1 g = 1 x 10⁹ ng
2100 g = ng of sample
So,
Do the cross multiplication,
Therefore, 2.1 kg of sodium bicarbonate is equal to the 2.1 x 10¹² ng of sample.
To know more about Mass units,
brainly.com/question/489186
Answer:
Mass of the box is 3.06 kg
Explanation:
Potential energy (that depends on gravity) is the type of energy which is stored that relies on the general position of different parts of a body. It is a property of a framework and not of an individual body or molecule; the framework made out of the Earth and the raised ball.
P.E = m.g.h Equation(1)
as we have to find the mass of the box then the formula for the mass will become
m=P.E/g(h) Equation(2)
as we know
P.E= 120J
h=4m
g=9.8m/s
g is the gravitational acceleration
putting values in the equation(2)
m = 120/9.8(4)
= 120/39.2
= 3.06 kg
mass of the box is 3.06 kg
The scheme whereby occupants in a pair of shuttles is as follows
use a strong cable with large weight on the end
Then use the orbital naneuvering system(OMS) to set the whole work as spinning about their common center of gravity.
The answer is A. Hope this helps. :)
Answer:
The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable. ... The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.
