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4 years ago

11

Dalton hypothesesized that atoms are indivisible and that all atoms of an element are identical. it is now known that

1 answer:

Katena32 [7]4 years ago

6 0

i don't understand but atoms are made of electrons an protons and neutrons..

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PLEASE ANSWER ASAP. Which of the following represents the chemical reaction of hydrobromic acid and chlorine to produce hydrochl

Anvisha [2.4K]

Answer:

b i think

Explanation:

3 0

3 years ago

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If 17.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentra

Verizon [17]

NH3 +HCl ----> NH4Cl

moles of HCl used = (0.8 x 17.4) /1000= 0.0139 moles
by use of reacting ratio between HCl to NH4Cl which is 1:1 therefore the moles of NH4Cl is also = 0.0139 moles
molar concentration = moles /volume in liters

molar concentration is therefore= (0.0139/5) x1000 = 2.7 M

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3 years ago

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Non metal are usually poor conductor of hart and electricity . The are non -lustourous,non-sonours,non-malleable and are coloure

vekshin1

Check the solution in the attachment.

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3 years ago

List 2 of the important properties of gases

horrorfan [7]

Answer:

pressure, temperature and volume

Explanation:

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3 years ago

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22. A piece of wood board contains approximately 6.76 X 1023 molecules of wood, C2H4920, how

Licemer1 [7]

Answer:

<h2>1.23 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{6.76 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{6.76}{6.02} \\ = 1.22923...$

We have the final answer as

<h3>1.23 moles</h3>

Hope this helps you

5 0

3 years ago