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topjm [15]
3 years ago
8

Why is the atomic mass for Calcium a decimal?

Chemistry
1 answer:
ratelena [41]3 years ago
3 0

Answer: It shows how much atomic mass of calcium weights by its self. You round it so it says 40.08 it would just be 40.

Explanation:

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How many atoms of phosphorus are in 8.10 mol of copper(II) phosphate?
madreJ [45]
You know from the chemical formula that 1 mole of Cu3(PO4)2 contains 2 moles of P so you can work out how many moles of P are in 8.1 moles of Cu3(PO4)2. 

<span>As for anything, 1 mole of X contains 6.022 * 10^23 of X. Multiply moles of X by Avogadro's number.</span>
7 0
3 years ago
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___________ would albumin expect to dissociate into individual ions and increase the number of osmols/mol in solution.
Lubov Fominskaja [6]

Answer: Check explanation please.

Explanation:

Before diving into the question,let us consider some important facts and definitions.

WHAT IS OSMOLARITY? Osmolarity is the number of OSMOLES of solute per litre of the solution. The unit of osmolary is OSMOLE. Nowadays, osmolarity has become a term used in the past, now osmolarity is called osmotic concentration.

OSMOLARITY can be calculated using; Σ(osmotic coefficient × number of ion × the solute molar concentration).

BACK TO THE QUESTION; ALBUMIN is a PROTEIN. Protein is a large molecule and it contributes an insignificant amount to osmolarity(around 0.6 Mosmole/litre).

Also, if we have the osmotic coefficient to be between zero and one, there is going to be great DISSOCIATION.

6 0
3 years ago
Is Explosion of nitroglycerin a chemical or physical change
Fynjy0 [20]
It's a chemical change beacause elements are combining to make something new! :)
8 0
4 years ago
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Cho recorded the weather in her town for a week. She wrote down her observations in the table below. Mon Tue Wed Thu Fri Sat Sun
SIZIF [17.4K]

Answer:

If this trend continues, the following week will be cooler, and a large amount of rain will fall.

Explanation:

Patterns and trends can often be found in data sets. During the week that Cho recorded the weather, the temperatures consistently dropped by one to four degrees each day. At the end of the week, the amount of precipitation increased daily.

6 0
4 years ago
Can someone good with chemistry help me?
Digiron [165]
As you go down group 7 the melting point of the elements will increase, this is because as you go down the group you are gaining an electron shell and the molecule will become bigger. This increase in size means that there will be an increase in the intermolecular forces as well.

So the order would be NF3, NBr3, NI3.

Hopefully this helps!
6 0
3 years ago
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