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3 years ago

What particle is J.J Thomson credited with discovering

Chemistry

1 answer:

Ilya [14]3 years ago

6 0

He was credited with discovering the subatomic particle also known as the electron in 1897.

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The correct name for HIO2?

valentinak56 [21]

Answer:

iodous acid

Explanation:

iodous acid would also be known as HIO2

6 0

2 years ago

How many moles of oxygen are in 5.6 moles of al(oh)3?

Mashcka [7]

5.6 Al(OH)3
5.6 Al, 16.8 O, 16.8 H

16.8 mols of oxegyn in 5.6 mols of Al(OH)3

7 0

3 years ago

Could you please help

Semenov [28]

I would say D, because you need to start with nothing to measure the different sizes as they start to grow. hope this helps!

8 0

3 years ago

What volume of 0.100 M HCl will react completely with 50.00 mL of 0.200 M NaOH?

skelet666 [1.2K]

Equation of reaction
Hcl+NaoH-->Nacl+H2O
1:1
Using the formula CaVa/CbVb=na/nb
Ca(Concentation of acid)= 0.100M
Cb(Concentration of base)=0.200M
Va=?
VB=50.00ml
na=1
nb=1
from the formula
Va= CbVbna/Canb
Va= 0.2*50*1/0.1*1
=10/0.1=100ml
Therefore volume of acid = 100ml

7 0

3 years ago

Quinine, an antimalarial drug, is 8.63% nitrogen. There are two nitrogen atoms per molecule. What is the molecular weight of qui

Furkat [3]

Answer:

324.18 g/mol

Explanation:

Let the molecular mass of the antimalarial drug, Quinine is x g/mol

According to question,

Nitrogen present in the drug is 8.63% of x

So, mass of nitrogen = $\frac {8.63}{100}\times x$

Also, according to the question,

2 atoms are present in 1 molecule of the drug.

Mass of nitrogen = 14.01 amu = 14.01 g/mol (grams for 1 mole)

So, mass of nitrogen = 14.01×2 = 28.02

These 2 must be equal so,

$\frac {8.63}{100}\times x=28.02$

solving for x, we get:

6 0

3 years ago