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pishuonlain [190]
3 years ago
11

PLEASE HELP FOR 15 BRAINY POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
evablogger [386]3 years ago
6 0

Answer:

i dont know sorry

Explanation:

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What is science? Write a definition for the word
Tanya [424]

Answer:

make me brainliest pls :)

Explanation:

Science is both a body of knowledge and a process. In school, science may sometimes seem like a collection of isolated and static facts listed in a textbook, but that's only a small part of the story. Just as importantly, science is also a process of discovery that allows us to link isolated facts into coherent and comprehensive understandings of the natural world.

Science is exciting. Science is a way of discovering what's in the universe and how those things work today, how they worked in the past, and how they are likely to work in the future. Scientists are motivated by the thrill of seeing or figuring out something that no one has before.

Science is useful. The knowledge generated by science is powerful and reliable. It can be used to develop new technologies, treat diseases, and deal with many other sorts of problems.

Science is ongoing. Science is continually refining and expanding our knowledge of the universe, and as it does, it leads to new questions for future investigation. Science will never be "finished."

Science is a global human endeavor. People all over the world participate in the process of science. And you can too!

5 0
3 years ago
Read 2 more answers
What is the oxidation number of S In Li2SO4? <br><br>A. +1<br>B. +2<br>C. +5<br>D. +6​
-Dominant- [34]

Answer:

6

Explanation:

Li has an oxydation number of 1          2*1     = 2

O has an oxidation number of -2         4(-2) = -8

S has an oxydation number of x           1 * x = x

The oxidation number on the molecule is 0.

So here is the equation

2 - 8 + x = 0        Combine like terms

-6 + x = 0            Add 6 to both sides

-6 + 6 + x = 6      Combine like terms

x = 6

Sulphur in this case has an oxidation number of 6

3 0
3 years ago
How many liters of a 0.50 solution are needed to give 3.5 moles of solute
sertanlavr [38]
0.50 Molar means 0.50 moles/liter
(.5 moles/liter)/3.5 moles= 1/7 Liters
3 0
3 years ago
Read 2 more answers
Na3po4 dissolves in water to produce an electrolytic solution. what is the osmolarity of a 2. 0 × 10-3 m na3po4 solution?
vichka [17]

When Na3po4 dissolves in water to produce an electrolytic solution. The osmolarity of a 2. 0 × 10-3 m Na3po4 solution is 0.008osmol/L.

Osmolarity is defined as the number of osmoles of solute particles per unit volume of the solution.

In other words osmolarity is the multiple if molarity

Osmolarity = i× molarity

Here i represents the van't Hoff factor,

Na_{3}PO_{4} ⇒ 3Na^{+} + PO_{4} ^{-}

3  Moles of Na_{} ^{+} + 1 mole PO_{4} ^{-} = 4

The number of moles of particles of solute produced in solution are actually called osmoles.

As a result, the van't Hoff factor will be equal to

i=4 Moles ions produced (osmoles) 1mole Na_{3} PO_{4} .dissolved =4

Since we know that,

Na_{3} PO_{4} = 2.0 * 10^{-3} M

Osmolarity =

4*2.0*10^{-3} M = 8.0 * 10^{-3}  osmol L -10s

Thus, the Osmolarity of given solution is 0.008 osmol/L.

learn more about Osmolarity:

brainly.com/question/13597129

#SPJ4

6 0
2 years ago
True or false: a mixture is always made up of a combination of elements
FromTheMoon [43]
A mixture has lots of different elements that are not necessarily bonded to each other, like sea water has lots of dirt, animals, and plant parts in it.  Compared to a solution (strictly salt and water, which bond and ionize with each other).
8 0
3 years ago
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