Answer:
how much people there are example a small town have 500 people living in that town
Answer: stars vary in their effective temperature and colour. A hot star radiates more energy per second per metre surface area than a cooler star. Does this then mean that a hot star is going to appear brighter to us than a cooler one? The answer to this actually depends on a few factors
Explanation: pa brainiest po
Answer:
the temperature changes finally to 339k because of the increase in pressure of the gas
Explanation:
Molarity is defined as number of moles of solute in liter of solution.
Whereas number of moles is equal to mass of given substance divided bu its molar mass.
Since molar mass of HCl is 36.46 g/mol. Therefore, calculate the number of moles of HCl as follows.
=
= 0.686 mol
Hence, molarity of solution will be as follows.
Molarity =
=
= 4.573 mol/L
Thus, we can conclude that molarity of a solution that contains 25 g of HCl in 150 mL of solution is 4.573 mol/L.
Answer:
this is fairly simple if you have a periodic table with you.
Explanation:
atomic number 17 is Cl mass numer is 35.45 for protons neutron and electron you can just look that up on google. atomic number is where it is at on the periodic table and the mass number is in the little square at the bottom.