1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alborosie
3 years ago
11

How many grams are in .705 moles of Cr?

Chemistry
2 answers:
weeeeeb [17]3 years ago
4 0

Answer:

51.9961 grams

Explanation:

Just did worksheet

Kruka [31]3 years ago
3 0

Answer:  51.9961 grams.

Explanation:

You might be interested in
What will be the answee for the quistion <br>solve for x 2x=1
Nadusha1986 [10]
Your answer is x= 1/2, this is because to get the x alone you need to move the 2 so you divide 2x by to and you have to do the same to the other side so 1/2, and you get x=1/2
5 0
3 years ago
Calculate the pH of: (a) 0.1M HCl; (b) 0.1M NaOH; (c) 3 X 10% M HNO3; (d) 5 X 10-10 M HCIO.; and (e) 2 x 10-8 M KOH.
Shtirlitz [24]

Answer:

(a) pH = -Log (0.1M) = 1

(b) pH = -Log (10^{-13}M) = 13

(c) pH = -Log (3x10^{-3}M) = 2.5

(d) pH = -Log (4.93x10^{-10}M) = 9.3

(e) pH = -Log (5^{-7}M) = 6.3

Explanation:

To calculate de pH of an acid solution the formula is:

pH = -Log ([H^{+}]) = 1

were [H^{+}] is the concentration of protons of the solution. Therefore it is necessary to know the concentration of the protons for every solution in order to solve the problem.

(a) and (c) are strong acids so they dissociate completely in aqueous solution. Thus, the concentration of the acid is the same as the protons.

(b) and (e) are strong bases so they dissociate completely in aqueous solution too. Thus, the concentration of the base is the same as the oxydriles. But in this case it is necessary to consider the water autoionization to calculate the protons concentration:

K_{w} =[H^{+} ][OH^{-}]=10^{-14}

clearing the [H^{+} ]

[H^{+} ]=\frac{10^{-14}}{[OH^{-}]}

(d) is a weak base so it is necessary to solve the equilibrium first, knowing Ka=3.24x10^{-8}

The reaction is HClO  →  H^{+} + CO^{-} so the equilibrium is

Ka=3.24x10^{-8}=\frac{x^{2}}{5x10^{-8}-x}

clearing the <em>x</em>

{x^{2}={1.62x10^{-17}-3.24x10^{-8}x}

x=[H^{+}]=4.93x10^{-10}

6 0
3 years ago
Is osmosis the same quality of diffusion but in different molecules
lys-0071 [83]
Yes you are correct.
6 0
3 years ago
Number of protons in Xe
Law Incorporation [45]
There are 54 Protons in Xe and 77 Neutrons in Xe.
8 0
3 years ago
How many moles of potassium chlorate are needed to produce 5.25 moles of oxygen
serg [7]
2KCIO3=2KCL+302
Hope you enjoy :)
8 0
3 years ago
Other questions:
  • What can humans do to reduce climate change
    9·2 answers
  • ?<br>Which statement about energy transfer in a wave is ture ​
    13·1 answer
  • Deepest places on Earth
    7·1 answer
  • What is the uppermost, horizontal area of a page?
    10·1 answer
  • Why is the mesosphere colder than the troposphere
    7·1 answer
  • Anwser this ASAP please
    8·1 answer
  • An atom of tin has an atomic number of 50 and a mass number of 119. How many protons, electrons, and neutrons are found in one n
    10·1 answer
  • FIRST TO Answer for free brainlest. GOG GOGOGO
    7·2 answers
  • pls this is my second time asking these questions, i'm sorry, but i really need help!!! 1. what happens to atoms when there is a
    11·1 answer
  • What kind of monoatomic ions would phosphorus form?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!