Answer:
The answer to your question is 0.54M
Explanation:
Data
Final concentration = ?
Concentration 1 = 0.850 M
Volume 1 = 249 ml = 0.249 l
Concentration 2 = 0.420 M
Volume 2 = 0.667 M
Process
1.- Calculate the number of moles in both solutions
Number of moles 1 = Molarity 1 x Volume 1
= 0.850 x 0.249
= 0.212
Number of moles 2 = Molarity 2 x Volume 2
= 0.420 x 0.667
= 0.280
Total number of moles = 0.212 + 0.280
= 0.492
2.-Calculate the final volume
Final volume = Volume 1 + Volume 2
Final volume = 0.249 + 0.667
= 0.916 l
3.- Calculate Molarity
Molarity = 0.492 / 0.916
Molarity = 0.54
Answer:
It is considered life, but that doesn’t have to do much with abortion.
We kill things all the time. Unless you are vegetarian, lots of animals are killed to give you meat. Even if you are, you’ll probably swat a mosquito that’s trying to bite you. And what about the bacteria inside your body that are constantly killed to keep you healthy?
The question is how much this life is worth. This becomes more a question of ethics, but I think we can all agree a human life is worth a lot. So killing humans is wrong. What about somewhat intelligent animals? Well, killing them just for the fun of it or because you can is wrong as well I think.Most people think that’s okay, although some people will disagree and become vegetarians.
Insect life is worth less, and killing an insect is seen by most people as okay as long as you have even a small reason for it (like being irritated by a buzzing fly).
And all the way on the bottom are bacteria. They are not conscious, even though alive.
Sorry about the first answer. I didn't look at the question carefully since I wasn't wearing my glasses.
If this doesn't help than I'm sorry.
Answer:
0.400 mL
Explanation:
Hello, the dilution factor (in folds) is given by:
Thus, the sample volume with three significant figures is given by:
Best regards.
Answer:
A substance that can accept a hydrogen ion from another substance- a different type of base.
A substance that produces an excess of hydroxide ions (OH-) in aqueous solution- Arrhenius base
A substance that produces an excess of hydrogen ions (H+ ) in aqueous solution- Arrhenius acid
A substance that can donate a hydrogen ion to another substance.- a different type of acid.
Explanation:
Arrhenius defined an acid as any substance that produces hydrogen ion as its only positive ion when dissolved in water and a base as a substance which produces hydroxide ions as its only negative ion when dissolved in water.
This has informed the classification of definitions shown in the answer above.
