Answer:
Independent variable: DIFFERENT TEMPERATURE
Explanation:
The independent variable of an experiment is the variable that the experimenter changes or manipulates in order to effect an outcome or response in the measured variable/dependent variable.
In this experiment, a scientist wants to determine how temperature affects photosynthesis. He sets up the experiment by adding 20ml of water at different temperatures to three test tubes. Hence, the independent or experimental variable is the DIFFERENT TEMPERATURES GIVEN TO EACH PLANTS IN THE TEST TUBE because it is what the experimenter changes in order to effect a measurable outcome i.e. oxygen released in each balloon as a result of photosynthesis, which is the dependent variable
Yes, 50 pennies plus 50 pennies equals 100 pennies minus 50pennies equals 50 pennies.
The symbol is ba. The number of neutrons equal the number of protons
Answer:
77 L of water can be made.
Explanation:
Molar mass of
= 32 g/mol
So, 55 g of
=
mol of
= 1.72 mol of
As hydrogen is present in excess amount therefore
is the limiting reagent.
According to balanced equation, 1 mol of
produces 2 mol of
.
So, 1.72 mol of
produce
mol of
or 3.44 mol of
.
Let's assume
gas behaves ideally at STP.
Then,
, where P, V, n, R and T represents pressure, volume, no. of moles, gas constant and temperature in kelvin scale respectively.
At STP, pressure is 1 atm and T is 273 K.
Here,
= 3.44 mol and R = 0.0821 L.atm/(mol.K)
So, 

Option (b) is correct.
Answer:
It describes length of measurement...