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mestny [16]
3 years ago
5

Copper and gold have similar reactive properties. On the Periodic Table of the Elements, these elements are most likely to...

Chemistry
2 answers:
allochka39001 [22]3 years ago
6 0
C, if it has the same properties is almost always grouped together
aev [14]3 years ago
5 0

Answer:

C. Be in the same group

Explanation:

Most elements in the same group have similar properties.

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How to calculate the frequency of an ion
sergij07 [2.7K]

solution:

You need to find the frequency, and they have already given you the wavelength. And since you already know the speed of light, you can use formula (2) to answer this problem. Remember to convert the nano meters to meters because the speed of light is in meters. (1 nm = 1.0 x 10^{-9} m)

v=c\lambda \\v= (3.00 \times 10^8 m/s)/(6.9\times 10^-7 m) \\v = 4.35 \times 10^{14} s^{-1}

8 0
3 years ago
Calculate the mass of ethyl alcohol required to prepare 540 grams of C4H6, if the reaction follows the scheme:
kkurt [141]

Answer:

Explanation:

2C₂H₅OH    =   C₄H₆  +  2H₂O  +  H₂

2 mole               1 mole

molecular weight of ethyl alcohol

mol weight of C₂H₅OH = 46 gm            

mol weight of C₄H₆  54 gm

540 gm of C₄H₆ = 10 mole

10 mole of C₄H₆ will require 20 mol of ethyl alcohol .

20 mole of ethyl alcohol = 20  x 46

= 920 gm

ethyl alcohol required = 920 gm .

3 0
3 years ago
What is the difrense between soft water and hard water?
Nutka1998 [239]
Hard water<span>... is </span>water<span> that contains an appreciable quantity of dissolved minerals (like calcium and magnesium). </span>Soft water<span>... is treated </span>water<span> in which the only ion is sodium. As rainwater falls, it is naturally </span>soft<span>. </span>
6 0
3 years ago
How many atoms are in the peroxide H2O2 molecule? Explain.
Mrrafil [7]
There are two hydrogen and two oxygen molecules because the number next to the atomic number is how many there are.
5 0
3 years ago
Read 2 more answers
Why is it easier to find the mass of a large object then a small object?
atroni [7]
Because lager objects have much more room for mass the smaller objects. take the earth as an example the earth is very big and has alot of mass in it which makes gravity that pulls us down when we jump up. 
4 0
3 years ago
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