All categories

3 years ago

Can someone help me with this? thanks

Chemistry

2 answers:

Brrunno [24]3 years ago

8 0

Answer:

1 mole of lithium is 7 grams. we know this from it's relative molecular mass.

if 1 mole is 7 grams then x moles is 0.56 grams

we can equate them by saying (1/x)=(7/0.56)

after cross multiplying, we get 7x=0.56, x will be equals to 0.56/7

x=0.08 grams

Alla [95]3 years ago

7 0

0.08 mole is your answer

Answer:

we have

1 mole of li =7g

now

5.6×10^-1g of li =1mole/7g×5.6×10^-1 g=0.08mole

You might be interested in

HELP ASAP

Ghella [55]

potassium reacts the most vigorously.

7 0

3 years ago

How many moles of Boron are present in 20g of borax (sodium tetraborate)?

stira [4]

20 grams of borax contains (20.0g) / (201 g mol -1) =0.10 mol of borax.

Therefore 0.40 mol of borax

5 0

3 years ago

A chemical reaction that removes electrons from an atom is called a(n) ________ reaction.

ch4aika [34]

A chemical reaction that removes electrons from an atom is called "O<span>xidation".
The term came from late 18th century from French.
When the electrons are removed from an atom it increase its valence.</span>

3 0

3 years ago

Complete and balance each of the following equations. If no reaction occurs, enter NOREACTION.

Tatiana [17]

Answer

Part A:

Given equation:

$KI_{(aq)}+BaS_{(aq)}\rightarrow$

The above equation is an example of a double replacement reaction. A double replacement (or double displacement) reaction is a reaction in which the positive and negative ions of two ionic compounds exchange.

Note: The oxidation number of:

K = +1

I = -1

Ba = +2

S = -2

So, the complete chemical equation including phases of the given reaction is:

$2KI_{(aq)}+BaS_{(aq)}\rightarrow BaI_{2(aq)}+K_2S_{(s)}$

Part B:

Given equation:

$KCl_{(aq)}+CaS_{(aq)}\rightarrow$

Also, the equation is an example of a double replacement reaction.

Note: The oxidation number of:

K = +1

Cl = -1

Ca = +2

S = -2

The complete chemical equation including phases of the given reaction is:

$2KCl_{(aq)}+CaS_{(aq)}\rightarrow K_2S_{(s)}+CaCl_{2(aq)}$

5 0

2 years ago

(34.969amu)(0.7577) =<br> (36.966amu)(0.2423) =<br> +

Monica [59]

Answer:

26.4 960 for the first one

8.9569 for the second one

7 0

4 years ago

Can someone help me with this? thanks​

Can someone help me with this? thanks