Answer:
I might next year with my cuz and nex year ima be in 8th
Explanation:
Explanation:
fractional distillation method is used to obtain petrol from petroleum...
hope it helps
Answer:
They conducted it from earth
Explanation:
There had never been anything capable of observing it from space launched at that time because Sputnik wasn't even launched
Answer:
Explanation:
Most blood types are determined by red cell antigens that differ by one or two amino acids, the Rh positive blood group contains the D antigen
I hope this was helpful, please mark as brainliest
Answer:
Explanation:
<u>1) Convert the mass of water into number of moles</u>
- Molar mass of water: 18.015 g/mol
- Number of moles, n = mass in grams / molar mass
n = 255 g / 18.015 g/mol = 14.15 mol
<u>2) Use the formula E = n × ΔH vap</u>
This is, you have to multiply the molar ΔH vaporization by the number of moles to find the total energy to boil the given amount of water.
- E = 14.15 mol × 40,650 J/mol = 575,395.5 J
<u>3) Round to the correct number of significant figures.</u>
The mass of water is the measurement with the least number of significant figures (3), so you must report the answer with 3 significant figures,
