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julia-pushkina [17]
2 years ago
13

What is the name for the columns in the periodic table?

Chemistry
1 answer:
astraxan [27]2 years ago
7 0

Answer:

On the periodic table, each column is called a group. So, the answer is D. groups.

Explanation:

A) is incorrect because the rows on the periodic table are called periods.

B) is incorrect because the elements are what is organized on the periodic table.

C) is incorrect because the periods are the rows on the periodic table.

D) is the correct answer because the columns on the periodic table are called groups.

Hope that helps!! Please give me brainliest because I need 3 more brainliest to become an Expert!!

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PLEASE HELP I WILL GIVE BRAINLIEST!!!!!
dangina [55]

Answer:

I think the answer is c!

Explanation:

Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule. hope this helps you!

8 0
2 years ago
A sample of sulfuryl fluoride, SO2F2, has a mass of 19.2 g. What amount, in moles, does this mass represent?
snow_tiger [21]

Answer:

0.188 moles

Explanation:

moles=mass/molar mass

moles= 19.2/ (32+32+38)

moles= 0.188

5 0
3 years ago
Read 2 more answers
Sulfuric acid (H2SO4) is prepared commercially from elemental sulfur using the contact process. In a typical sequence of reactio
Elan Coil [88]
I believe the end result is still 83 moles since there is never an amount of sulfur atoms added to the initial amount, but rather oxygen and water is repeatedly added to it. To find it's weight, first find the molar mass of H2SO4:

H2 + S + O4 = 2.00 + 32.1 + 64.0 = 98.1 g/mol

and mass = (98.1 g/mol)(83 mol) = 8142.3 g

rounded to 8.1 x 10^3 g assuming 100% yield?
8 0
3 years ago
Read 2 more answers
Which function allows a user to add another item to a list in Python? order() print() sort() append()
vovikov84 [41]

Answer:

Probably (print)

Explanation:

I think

6 0
3 years ago
Zn(s) + 2 HCl(aq) —> ZnCl2(aq)
miv72 [106K]

Answer:

First write the balanced equation for the reaction of HCl with Zn (NOTE: the previous answer did NOT do this and thus obtained an incorrect answer)

Zn + 2HCl ==> ZnCl2 + H2(g)

moles of H2 desired:  PV = nRT

n = PV/RT = (1 atm)(10L)/(0.0821 Latm/Kmol)(298K)

n = 0.409 mole H2 desired

moles Zn needed:

0.409 moles H2 x 1 mole Zn/2 moles HCl = 0.204 moles Zn needed

mass Zn needed = 0.204 moles Zn x 65.4 g/mol = 13.4 g Zn needed (to 3 sig. figs.)

Explanation:people always get this wrong but i got you

4 0
3 years ago
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