3 years ago

What is created when the North and South magnetic poles are placed close to each other?

Chemistry

1 answer:

Free_Kalibri [48]3 years ago

6 0

They are attracted to one another because the magnetic fields link

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Which type of wave to support the idea that light is also made of waves

Alex

Answer:

my d comes in waves

Explanation:

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3 years ago

The ion MnOis often used to analyze for the Fe2+ content of an aqueous solution by using the (unbalanced) reaction Mno+Fe2+ + Fe

dusya [7]

Answer:

B) 0.230 M

Explanation:

The first step is to balance the reaction between the Ferrous ion and the permanganate ion:

$5~Fe^+^2~+~MnO_4^-^1~+~8H^+~->~5Fe^+^3~+~Mn^+^2~+4H_2O$

Then we have to calculate the moles of $MnO_4^-$ :

$M~=~\frac{mol}{L}$

$mol~=~M*L$

$mol~=~0.033~M*0.0633L=~0.002088~mol~MnO_4^-$

Then using the molar ratio we can find the moles of $Fe^+^2$ :

$0.002088~mol~MnO_4^-\frac{5~mol~Fe^+^2}{1~mol~MnO_4^-}=0.01044~mol~Fe^+^2$

Finally we can calculate the molarity:

$M=\frac{0.01044~mol~Fe^+^2}{0.0455~L}=0.230~M$

5 0

4 years ago

What is the volume of 19 grams of fluorine gas at STP?

Anna [14]

Molar mass fluorine gas ( F₂) = 38.0 g/mol

number of moles:

19 / 38.0 => 0.5 moles

1 mole ------------ 22.4 L ( at STP )
0.5 moles -------- ( volume )

Volume = 0.5 x 22.4 / 1

Volume = 11.2 / 1

= 11.2 L

hope this helps!

5 0

3 years ago

Refer to the example about diatomic gases A and B in the text to do problems 19 - 27. How many grams in 3 moles of A2?

dedylja [7]

B.) 3

hope you have a okay day

(GAME OF THRONES RULES

7 0

3 years ago

Read 2 more answers

1 calorie is equal to A. 4.184 J B. 1,000 J C. 6.02x10^23 J D. 8.314 J

FromTheMoon [43]

The answer to your question is A 4.184 J

5 0

4 years ago