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xxMikexx [17]
3 years ago
13

Which of the following metals is most reactive?

Chemistry
2 answers:
g100num [7]3 years ago
7 0
The answer is, D. Calcium
coldgirl [10]3 years ago
5 0
Sodium seems to be the most reactive out of the options
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An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz). Combustion of 2.50g of this compound produced 3.67g of
REY [17]
The solution to the problem is as follows:

 <span>a) 

C + O2 = CO2 

Molar mass CO2 = 44 g/mol 

3.67 g CO2 * 1 mol / 44 g = 

=0.0834 mol CO2 = 0.0834 mol C 

I hope my answer has come to your help. God bless and have a nice day ahead!
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4 0
3 years ago
Explain how the presence of several oxygen atoms ina compound containing an-OH group can make the compound acidic.
Lina20 [59]
<span>In each case, the same bond gets broken - the bond between the hydrogen and oxygen in an -OH group. Writing the rest of the molecule as "X"
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The factors to consider

Two of the factors which influence the ionisation of an acid are:

<span>the strength of the bond being broken,the stability of the ions being formed.</span>

In these cases, you seem to be breaking the same oxygen-hydrogen bond each time, and so you might expect the strengths to be similar.

7 0
3 years ago
The continents of earth were clutered to gether in formation that a scientist named what
harkovskaia [24]

<u>Answer</u>:

the continents of earth were clustered together in formation that a scientist named Pangaea.

<u>Explanation</u>:

Before 300 million years ago, our earth was not made up of 7 different continent what we have now. Instead it was single huge mass land that was surrounded by a single ocean called  Panthalassa. A lot of  migration and collision lead to the formation of Pangaea. An Scientist named Albert Wegener gave the name Pangaea. Later, Pangaea was broken into  Gondwanaland and Laurasia.These Lands were then divided into 7 continents.

3 0
2 years ago
Someone help me with this ASAP
ZanzabumX [31]

Answer:

First bone

Explanation:

6 0
3 years ago
Read 2 more answers
At a certain temperature, the solubility of strontium arsenate, sr3(aso4)2, is 0.0560 g/l. what is the ksp of this salt at this
REY [17]
The solution for this problem is:
Get into moles first. .0560 grams over 540.8 grams per mole = 1.04 x l0^-4 moles 
Sr3(As04)2 = 3 Sr++(aq) plus 2 As04^-3(aq) 
Ksp = (Sr++)^3(As04^-3)^2 
(Sr++) = 3 X 1.04 x l0^-4= 3.11 x l0^-4 
(As04^-3) = 2 x 1.04 x l0^-4= 2.07 x l0^-4 
Ksp = (1.04 x l0^-4)^3 (2.07 x l0^-4)^2 which equals 4.82 x 10^-20
5 0
3 years ago
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