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andrew-mc [135]
3 years ago
12

What is the name for the group of unreactive elements on the periodic table?

Chemistry
1 answer:
Mazyrski [523]3 years ago
5 0

Noble Gases, at least that's what I was told. Hope that helps.

You might be interested in
Please answer it!! Would appreciate a lot!!
fomenos

Answer:

1 acid

2 neutralization

3 H+ , OH-

4 metal

5 alkali

6 0
3 years ago
If 3.68 grams of zinc were allowed to react with excess hydrochloric acid to produce zinc chloride and hydrogen gas, how much zi
AysviL [449]

Answer:

Here... Since there is excess HCl, you know the Zinc will be the limiting reagent.  I was able to create the reaction equation based on the info you gave: Z + 2HCl ----> ZCl2 +2H.  Now, in order to find the theoretical yield of ZCl, you need to convert Zinc from grams to moles.  Do this by dividing by its molar mass (65.38), thus: 3.68 (g) / 65.38 (g/mol) = 0.056286... moles.  

Now, using the balanced equation we made earlier, we see that 1 mole of Zinc creates 1 mole of ZCl2.  Thus our ratio is 1:1.  This makes the next step easy.  Since it is 1:1, we multiply the number of moles we have of Zinc (0.056286...) by the number of moles it will create of ZCl (1).  (0.056286)(1) = 0.056286 moles ZCl.  Now convert this to grams by multiplying by its molar mass (136.28) and you get 7.67 grams.  This is your theoretical yield.  The percent yield is found by dividing the actual amount obtained (7.12 g.) by the theoretical yield (7.67 g.) then multiply that by 100%.   When this is done, your Percent Yield is about 92.8%

6 0
3 years ago
How did the gold foil experiment lead to the discovery of the nucleus?
makvit [3.9K]

Answer:

Rutherford established the nuclear theory of the atom with his gold-foil experiment. When he shot a beam of alpha particles at a sheet of gold foil, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.

5 0
3 years ago
State the periodic table
kogti [31]

Answer:

Heres a picture of the periodic table.

Explanation:

Source(s):Science News for Students

5 0
3 years ago
Can you help me with this
aliina [53]

Answer:

vertebral column

Explanation:

A lamprey's body has smooth, scale-less skin and two dorsal fins, but has no lateral line, no vertebrae, no swim bladder, and no paired fins.

Tuna is vertebrate.

4 0
3 years ago
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