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4 years ago

What would be the best item to fill the cylinders with to measure the volume

Chemistry

1 answer:

Tpy6a [65]4 years ago

6 0

Answer:

Most accurate glassware for measuring volume

Graduated cylinders, beakers, volumetric pipets, burets and volumetric flasks are five kinds of glassware often used to measure out specific volumes. Volumetric pipets, flasks and burets are the most accurate; the glassware makers calibrate these to a high level of accuracy.

Explanation:

You might be interested in

The number of total electrons of iron is: a) 55.85 b)29.85 c)26 d)27.78 e) 56

AleksandrR [38]

I think the answer is b

6 0

3 years ago

Read 2 more answers

Can someone plz help me with these two questions?

bija089 [108]

For the first one, compound might mean more than one thing or i team. But mixture is a very specific definition for chemistry. And for the second one, it would be wrong because “pure” means only that substance, where as it would only be “orange juice”, or something else. But pure refers to only a clean not contaminated substance.

4 0

3 years ago

How many moles are in 1.9 x 1046 atoms of chromium?

faust18 [17]

Answer:

<h2>3.156 × 10²² atoms</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

$n = \frac{1.9 \times {10}^{46} }{6.02 \times {10}^{23} } \\ = 3.156 \times {10}^{22}$

We have the final answer as

<h3>3.156 × 10²² atoms</h3>

Hope this helps you

8 0

3 years ago

Calculate the work done when a force of 4 N pulls a box along the floor for a distance of 0.3 m.

Yuki888 [10]

Answer:

<h2>1.2 Joule</h2>

solution,

Force=4 N

Distance=0.3 m

Now,

 $work = f \times d \\ \: \: \: \: \: \: \: \: \: \: \: = 4 \times 0.3 \\ \: \: \: \: \: \: \: \: \: \: \: = 1.2 \: joule$ 

hope this helps...

Good luck on your assignment....

8 0

4 years ago

HELP

Wittaler [7]

Answer:

Explanation:

Given parameters:

Number of moles of CaO = 0.22moles

Unknown:

Mass of CaO = ?

Solution:

Mass, number of moles and molar mass are related using the expression below;

Mass = number of moles x molar mass

Molar mass of CaO = 40 + 16 = 56g/mol

Insert the parameters and solve;

Mass = 0.22 x 56 = 12.32g

Given parameters:

Number of moles of NaCl = 0.83moles

Unknown:

mass of NaCl = ?

Solution:

Also,

Mass = number of moles x molar mass

Molar mass of NaCl = 23 + 35.5 = 58.5g/mol

Now insert the parameters and solve;

mass = 0.83 x 58.5

mass = 48.6g

Given parameters:

Number of moles of H₂SO₄ = 0.5moles

Unknown:

mass of H₂SO₄ = ?

Solution:

Mass = number of moles x molar mass

Molar mass of H₂SO₄ = 2(1) + 32 + 4(16) = 98g/mol

Insert the parameters and solve;

Mass = 0.5 x 98 = 49g

8 0

3 years ago