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Crazy boy [7]
2 years ago
13

PLEASE SOEMBODY HELP ME AND PLEASE HURRY

Chemistry
1 answer:
madreJ [45]2 years ago
7 0

Answer:

I am very sorry I don't have the answer, I just really need the points for more badges.

Explanation:

Also, I <em>really </em>need this answer as well, so can someone please answer, and if someone does answer, please make sure it is at least 500 words.

✨ I hope everyone who sees this has a great day though! ✨

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The sum of the potential energy and the kinetic energy of an object is its thermal energy. True or false?​
liq [111]

Answer:

false

Explanation:

4 0
2 years ago
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Can someone please help with this-
Nonamiya [84]
Ignition wires make it more accurate because it will cook it faster
stirrer would have the less results of fast
a sealed bomb may cook it fast but you would have to be careful and don't mess up
5 0
3 years ago
Complete combustion of 5.90 g of a hydrocarbon produced 18.8 g of CO2 and 6.75 g of H2O.
Inessa05 [86]
First we have to find moles of C:
Molar mass of CO2:
12*1+16*2 = 44g/mol
(18.8 g CO2) / (44.00964 g CO2/mol) x (1 mol C/ 1 mol CO2) =0.427 mol C 
Molar mass of H2O:
2*1+16 = 18g/mol
As there is 2 moles of H in H2O,
So,

<span>(6.75 g H2O) / (18.01532 g H2O/mol) x (2 mol H / 1 mol H2O) = 0.74mol H </span>

<span>Divide both number of moles by the smaller number of moles: </span>
<span>As Smaaler no moles is 0.427:
So,
Dividing both number os moles by 0.427 :
(0.427 mol C) / 0.427 = 1.000 </span>
<span>(0.74 mol H) / 0.427 = 1.733 </span>

<span>To achieve integer coefficients, multiply by 2, then round to the nearest whole numbers to find the empirical formula: 
C = 1 * 2 = 2
H = 1.733 * 2 =3.466
So , the empirical formula is C2H3</span>
4 0
3 years ago
Read 2 more answers
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 20.4 g g of carbon were burned in the presence
Aleonysh [2.5K]

Answer:

C + O2 -> CO2

C 20.4/12 = 1.7

O 70.4-16.0/16=3.4

CO2 1.7 mol * 44 = 74.8

3 0
3 years ago
Molecules are packed tigghtly together
Tju [1.3M]
Yes molecules are tightly together. Hope this helps
4 0
3 years ago
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