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Makovka662 [10]
3 years ago
5

water is set on the stove to boil as it absorbs the temperature increases from 27.5°C to 56.0°C. if there was 325g of water adde

d to the pot, how much energy was absorbed if the heat capacity of water is 4.18J/°C? Round answer to the correct number of significant figures.
Chemistry
1 answer:
leva [86]3 years ago
6 0
325g x 4.18 x 28.5 = 38717.25J= 387KJ (3sf)
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Okay so this is half math half chemistry...
AleksandrR [38]
So you need to find the volume in L? If so:
Convert the mass of Lithium Bromide into moles by dividing the 100 grams by the molar mass of LiBr, taken from the periodic table 
In a solution, moles = (concentration in mole/L) x (volume in L)
We know the moles, we have the concentration in mole/L, now find the volume in L, and you should get 0.288. Plz do the math and check for yourself
3 0
3 years ago
Help me get this right no links
Travka [436]

Answer:

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Explanation:

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6 0
3 years ago
One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal
WARRIOR [948]

Answer:

Lithium oxide, Li₂O.  

Explanation:

Hello!  

In this case, according to the given amounts, it is possible to write down the chemical reaction as shown below:

M_2O+H_2\rightarrow 2M+H_2O  

Which means that the metallic oxide has the following formula: M₂O. Next, we can set up the following proportional factors according to the chemical reaction:

5.00gM_2O*\frac{1molM_2O}{(2*X+16)gM_2O}*\frac{2molM}{1molM_2O}*\frac{XgM}{1molM}=2.32gM  

Thus, we perform the operations in order to obtain:

\frac{10X}{(2X+16)}=2.32  

So we solve for x as shown below:

10X=2.32(2X+16)\\\\10X=4.64X+37.12\\\\X=\frac{37.12}{10-4.64}\\\\X= 6.93g/mol  

Whose molar mass corresponds to lithium, and therefore, the metallic oxide is lithium oxide, Li₂O.  

Best regards!

8 0
3 years ago
Write in scientific notation:
Anika [276]
The answer would be the third one
5 0
3 years ago
Read 2 more answers
Give the systematic names for the formulas or the formulas for the names:<br> (a) Sn(SO₅)₉<br> ;
tensa zangetsu [6.8K]

Tin (IV) sulfite is the systematic name for the formula Sn(SO₃)₂.

<h3>What is Molecular Formula ?</h3>

The chemical formula that gives total number of atoms of each element in one molecule of a compound is called Molecular Formula.

<h3>What is Oxidation State ?</h3>

Oxidation state is also known as oxidation number. It is defined as the atom is equal to the total number of electrons which have been removed from the element in order to form chemical bond with other atom.

Now find the oxidation state of Sn in Sn(SO₃)₂.

Assume the oxidation state of Sn in Sn(SO₃)₂ be x.

x + 2 × (-2) = 0

x -4 = 0

x = +4

Oxidation state of Sn is +4 or (IV)

Thus from the above conclusion we can say that The systematic name for the formula Sn(SO₃)₂ is Tin (IV) sulfite.

Learn more about the Oxidation State here: brainly.com/question/8990767

#SPJ4

Disclaimer: The given question is misprint on the portal. Here is the correct form of question.

Question: Give the systematic names for the formulas or the formulas for the names:

(a) Sn(SO₃)₂

7 0
2 years ago
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