m/s is the correct answer of them.
You need a control group in an experiment because if you did not have a control group your numbers or outcomes can cause an error because you wont have any numbers that are right to compare to. There will be too many things changed in the trial.
we are having two cointainers A and B we know that speed of A and B 700m/s and 1100 m/s .
we know that temperature rise will increase the speed of molecule now we have to match the average speed of A and B so here possiblities one is reducing the temperature of container B so the speed will be reduced from 1100 and the temperature of both container will be same now .
Answer:
6.09 M
Explanation:
M(HCl) = 1 +35.5 = 36.5 g/mol
85.6 g * 1 mol/36.5 g = 2.3452 mol HCl
Molarity = mol solute/ L solution = 2.3452 mol/0.385 L = 6.09 mol/L =6.09 M
Formula units are another way of expressing "molecules". One mole is equivalent to .
Use dimensional analysis to solve this problem.
2.87 moles
Then, cross off the moles in the given number and the denominator, and your remaining unit is molecules of sodium carbonate.
Then, multiply and divide accordingly to the fraction.
2.87 * 6.022*10^23 = 1.72 * 10^24. Notice how the given problem has only 3 sig figs, so the answer should also have 3 sig figs
Your final answer would be 1.72 formula units of sodium carbonate.