Answer:
Explanation:
Step 1
The question is based on the concept of PH and pOH calculations.
pH is defined as negative logarithmic of hydronium Ion concentration.
while pOH is defined as negative logarithmic of hydroxide ion concentration of the solution.
Step 2
[H+] = 7.7*10-7 M
pH = -log[H+]
= -log ( 7.7*10-7 )
= 6.12
Step 3
pOH = 14 - pH
= 14 - 6.11
= 7.89
Answer:
semipermeability
Explanation:
partially but not freely or wholly permeable specifically : permeable to some usually small molecules but not to other usually larger particles a semipermeable membrane.
Answer:
1.Creates environmental hazards
2.Can contribute to global warming processe
3.Can pollute harmful and toxic things in the air
4.has harmful gases that can hurt the environment including the water and soil
5.A waste of space that is taking up the earth
6.full of rubbish and toxins that can effect the environment
7.can hurt humans and animals because of the toxic chemicals produced in the air
8.Make the land soil weaker because of the bad toxins and chemicals
It is soluble in water and slightly soluble in ethanol.
Yes, she is right. 1: when she took them out of the freezer heat was added. 2: when she toasted them in the oven heat was added and a chemical change occurred because the baking soda/powder reacted, causing the muffins to rise.
