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qwelly [4]
3 years ago
9

List the exceptions to Metals showing a high density?

Chemistry
1 answer:
Bumek [7]3 years ago
7 0

Answer:

Osmium, 22.6 g/cc.

Iridium, 22.4 g/cc.

Platinum, 21.45 g/cc.

Rhenium, 21.2 g/cc.

Uranium, 20.2 g/cc.

these are are metals having a high density

Explanation:

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What am I calculating for when solving for 17.0 mL of ethanol, density of ethanol= 0.94 g/mL
True [87]

Answer:

you are caculating for the mass/wight of ethanol

Explanation:

DxV=M

5 0
3 years ago
What is the charge of this atom? <br> 65 protons <br> 60 electrons <br><br> A)-5<br> B)+5<br> C)0
Pani-rosa [81]

Answer:

B. +5

Explanation:

4 0
3 years ago
Read 2 more answers
Ammonia can be produced in the laboratory by heating ammonium chloride
AnnyKZ [126]

Answer:

Mass = 2.89 g

Explanation:

Given data:

Mass of NH₄Cl = 8.939 g

Mass of Ca(OH)₂ = 7.48 g

Mass of ammonia produced = ?

Solution:

2NH₄Cl   +  Ca(OH)₂     →    CaCl₂ + 2NH₃ + 2H₂O

Number of moles of NH₄Cl:

Number of moles = mass/molar mass

Number of moles = 8.939 g / 53.5 g/mol

Number of moles = 0.17 mol

Number of moles of Ca(OH)₂ :

Number of moles = mass/molar mass

Number of moles = 7.48 g / 74.1 g/mol

Number of moles = 0.10 mol

Now we will compare the moles of ammonia with both reactant.

                      NH₄Cl          :          NH₃

                          2              :           2

                         0.17          :          0.17

                   Ca(OH)₂         :          NH₃

                        1                :           2

                    0.10              :          2/1×0.10 = 0.2 mol

Less number of moles of ammonia are produced by ammonium chloride it will act as limiting reactant.

Mass of ammonia:

Mass = number of moles × molar mass

Mass = 0.17 mol × 17 g/mol

Mass = 2.89 g

6 0
2 years ago
I don’t understand this question and need help!!
Dafna1 [17]
Medium about 3 second? Not sure lol just need more points honestly lol
6 0
2 years ago
What does fermentation mean?
Cerrena [4.2K]

Answer:

Explanation:

the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.

6 0
3 years ago
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