If a substance consists of only one kind of atom, it is a(an)_________.
2 answers:
You might be interested in
1. By Newton's second law, the mathematical relationship between force, mass and acceleration can be described.
2. An object will undergo acceleration only when an unbalanced force will be acting on any object.
Answer:
Explanation:
1. The mathematical relationship between force, mass and acceleration is done in the Newton's second law of motion. In this law, it is stated that any external unbalanced force acting on any object will be equal to the rate of change of momentum. In other words, the external unbalanced force will be proportional to the acceleration exerted on the object and also to the mass of the object.
Since, momentum p = mass * velocity = mv
Since, the mass will be constant, dm/dt = 0, so F = ma
2. Also from this law, it can be understood that an object will undergo acceleration only when an unbalanced force will be acting on any object.
Answer:
Explanation:
The percent yield is the ratio of the actual yield to the theoretical yield.
- The actual yield is the amount obtained from performing a chemical reaction. For this problem, it is 14.8 grams.
- The theoretical yield is the potential amount from performing a chemical reaction at maximum performance. For this problem, it is 23.5 grams.
We can substitute the known values into the formula.
Divide.
Multiply.
The original measurements for the theoretical and actual yields have 3 significant figures, so our answer must have the same. For the number we calculated, that is the tenths place.
The 7 to the right, in the hundredths place, tells us to round the 9 up to a 0. Since we rounded up to 0, we have to move to the next place to the left and round the 2 up to a 3.
The percent yield is approximately <u>63.0 percent.</u>