Answer:
A. How much decay happens in each flashlight
Explanation:
In an experiment, the DEPENDENT OR RESPONDING VARIABLE is the variable that responds to changes being made to another variable called Independent variable. It is the variable that is measured by an experimenter.
In this question, an experiment was carried out to research the effect of sunlight on plastic decay. Three plastic flashlights were used for this experiment in which one was placed in a dark closet (control), and the others were placed in light at different times or intervals. However, the variable being measured or assessed is the decay of each flashlight. This means that "HOW MUCH DECAY HAPPENS IN EACH FLASHLIGHT" is the dependent variable.
Answer:
Explanation:
1. Weight = 35 P and 45 N = 80
2. Atom: 35P = 35 electrons
3. Bromine
4. It's a non metal. It's in column 17. It will gain 1 electron (normally).
5. Ion: 35 protons, 36 electrons
6. Charge: - 1 usually, but there are exceptions
7. Anions go to the Anode. The anode attracts minus charged elements.
8. In an uncharged state, element 36 would be next. That would be Krypton which is always uncharged. It is a noble gas.
Vibration?
I’m not super sure.
Answer:
0.64 mol
Explanation:
Using ideal gas equation as follows;
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question;
P = 0.72atm
V = 22 L
T = 30°C = 30 + 273 = 303K
n = ?
Using PV = nRT
n = PV/RT
n = (0.72 × 22) ÷ (0.0821 × 303)
n = 15.84 ÷ 24.88
n = 0.64 mol
