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Nady [450]
2 years ago
10

What is missing from the solubility graph shown on the right? A graph with temperature in degrees Celsius ranging from 0 to 100

in units of 20 on the horizontal axis and unidentified tick marks from 0 to 300 in increments of 50 on the vertical axis. An orange line curves upward from 0, 90 through 50, 125 to 100, 245.
Chemistry
2 answers:
AVprozaik [17]2 years ago
8 0

Answer:

graph title, label for the y axis, and legend explaining the orange and blue colors

Explanation:

bija089 [108]2 years ago
7 0

Answer:

graph title

label for the vertical (y) axis

legend explaining the orange and blue colors

Explanation:

got it correct on edge 2021

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alexandr402 [8]

Answer:

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Explanation:

6 0
2 years ago
A 17.6-g sample of ammonium carbonate contains ________ mol of ammonium ions.
postnew [5]
These problems are a bit interesting. :)

First let's write the molecular formula for ammonium carbonate. 

NH4CO3 (Note! The 4 and 3 are subscripts, and not coefficients)

17.6 gNH4CO3

Now to convert to mol of one of our substances we take the percent composition of that particular part of the molecule and multiply it by our starting mass. This is what it looks like using dimensional analyse. 

17.6 gNH4CO3 * (Molar Mass of NH4 / Molar Mass of NH4CO3)

Grab a periodic table (or look one up) and find the molar masses for these molecules! Well. In this case I'll do it for you. (Note: I round the molar masses off to two decimal places)

NH4 = 14.01 + 4*1.01 = 18.05 g/mol
NH4CO3 = 14.01 + 4*1.01 + 12.01 + 3*16.00 = 78.06 g/mol


17.6 gNH4CO3 * (18.05 molNH4 / 78.06 molNH4CO3)
= 4.07 gNH4

Now just take the molar mass we found to convert that amount into moles!

4.07 gNH4 * (1 molNH4 / 18.05 gNH4) = 0.225 molNH4

4 0
2 years ago
A system gains 652 kJ of heat, resulting in a change in internal energy of the system equal to +241 kJ. How much work is done?
levacccp [35]

Answer:

-411 kj

Explanation:

We solve by using this formula

∆U = ∆Q + ∆W

This formula is the first law of thermodynamics

Change in internal energy U = +241

Heat gained by system Q = 652

Putting the value into the equation

+241 = 652 + W

Workdone = 241 - 652

Workdone = -411 kj

Since work done is negative it means that work was done by the system

3 0
2 years ago
Examine the diagram of a cell.
Zepler [3.9K]

Answer:

chloroplast

Explanation:

i took the test

7 0
3 years ago
Read 2 more answers
Helllppppppppp Don’t Guess
ruslelena [56]

Answer:

C. Lithium

Explanation:

I Goo gled it and I think that's right.

3 0
2 years ago
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