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lora16 [44]
3 years ago
6

Use the information below to answer the following questions.

Chemistry
1 answer:
Slav-nsk [51]3 years ago
3 0

Answer:

sorry don't know wish I could help

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Describe something that is not matter. What characteristics is it lacking?
lara31 [8.8K]
<h3><u>Answer; </u></h3>

Energy such as heat light, are examples of non matter

<h3><u>Explanation;</u></h3>
  • Matter is anything that occupies space and has weight and mass. It is also tangible, and visible.
  • Not everything is matter, others such as heat and light are not matter, they are non-matter, This is because they are not tangible, they lack weight, they also lack atoms or molecules, but they are form of energy.
  • Therefore, energy such as heat, and light  are non matters
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3 years ago
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A 0.9182 g sample of CaBr2 is dissolved in enough water to give 500 ml of solution. what is the calcium ion concentration in thi
Nataly_w [17]

First calculate the number of moles of CaBr2 given the molar mass of 199.89 g/mol.

moles CaBr2 = 0.9182 g / (199.89 g / mol) = 4.60 x 10^-3 mol

 

We see that each CaBr2 contains only 1 mole of Ca, so the moles of Ca is also:

moles Ca+ = 4.60 x 10^-3 mol

 

So the molarity of this is:

Molarity Ca+ = 4.60 x 10^-3 mol / 0.500 L

<span>Molarity Ca+ = 9.19 x 10^-3 M</span>

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Round the mmHg readings to the nearest whole number. Round the kPa readings to the nearest tenth. Round the atm readings to the
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6 0
2 years ago
If you have a gold brick that is 2cm by 3cm by 4cm and has density of 19.3g/cm3, what is its mass?
natulia [17]
Volume = a x a x a  

V = 2 cm x 3 cm x 4 cm => 24 cm³

Density = 19.3 g/cm³

Mass = ?

Therefore:

m = D x V

m = 19.3 x 24

m = 463.2 g
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