In a town, it rained 84.29cm in the first year and 87.87cm in the second year. Find what the increase in the rainfall in the second year?

Given: 8.60 moles of Oxygen

To find: no. of moles of Nitrogen that can be combined with 8.6 moles of Oxygen.

Solution:The chemical formula of dinitrogen pantoxide is

N2O5.

Which means that for every 5 Oxygen atoms we require 2 atoms of Nitrogen.

So for 5 mol of O2 we require 2 mol of N2

therefore, 1 mol pf O2 require 2/5 mol of N2

Hence, 8.6 mol of O2 will require 2/5 × 8.6 mol of N2

which comes up to be 3.44 moles of N2.

So the no. of moles of Nitrogen that can be combined with 8.6 moles of Oxygen is 3.44

Answer:

(a) 104 × 6 = (___100___ + __4____) × ___6___

________________________

= __600____ + ___24___

= __624_______

(b) 99 × 4 = (___100___ - __1____) × ____4__

________________________

= __400____ - ___4___

= ____356_____

(c) 105 × 3 = (__100____ + __5____) × ____3__

________________________

= __300____ + ___15___

= ______315___

(d) 102 × 3 = (___100___ + ___2___) × ___3___

________________________

= ___300___ + ___6___

= _____306___

Answer:

hope it will help you

Explanation:

mark as brainlist

Answer:

this will be answer

Explanation:

I hope it is helpful to you

Answer:

there is slight improvement in their written mails after

the grammar course.

Mark as Brainliest

There is a slight improvement in their written mails after the grammar course.

• The word 'improvement' means to upgrade or rectify something and take it to the next stage.
• Here, the grammar course enhanced the quality of the written mail.
• The word inserted has to be a noun and a verb cannot be inserted. So, improve, being a verb, will be incorrect.
• The word 'improvise' means to create something at the moment and does not fit the context.