Answer:
1. Independent variable : pendulum's height
2. Dependent variable : Pendulum speed
Explanation:
In an experiment scientist uses such things to search for any cause and its effect. experimenters design the model in such a way that change in one of the item causes a change in another.
These are called variables which are independent variable and dependent variable. Independent variables can be changed by the experimenter while dependent variables are not controllable by the experimenter.
In the context, the hypothesis is when the pendulum's height is reduced, the clock will speed up.
1. Independent variable : height of the pendulum
2. Dependent variable : Pendulum speed
The moles of magnesium in 1.25 x 1023 are 20.8 mol.
Answer:
0.0738 M
Explanation:
HNO3 +LiOH = LiNO3 + H2O
Number of moles HNO3 = number of moles LiOH
M(HNO3)*V(HNO3) = M(LiOH)*M(LiOH)
M(HNO3)*50.0mL = 0.100M*36.90 mL
M(HNO3) = 0.100*36.90/50.0 M = 0.0738 M
Answer:
Explanation:
Scientific notation is the way of writing numbers which are either large or small. The number is written in the scientific notation when the number is between 1 and 10 and then multiplied by the power of 10. Engineering notation is the same version of the scientific notation but the number can be between 1 and 1000 and in this exponent of the ten is divisible by three.
For example, 
is to be written as 
in engineering notation.
The given number:
0.00000009345 can be written as 
Answer upto 4 significant digits =
