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Paladinen [302]
3 years ago
15

How many hours are spent sleeping 33%

Chemistry
1 answer:
dolphi86 [110]3 years ago
8 0
Well if you go to bed at 10 well let's hold off on this question so so let's see let's come together so each hour is 60 minutes so let's count if you go to
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If you have 3.50 moles of hydrogen and 5.00 moles of nitrogen to produce ammonia, which element is the reactant in excess? 3H2 +
kicyunya [14]

Answer:

nitrogen

Explanation:

The stoichiometry of the reaction says that H_{2} and  N_{2} react 3:1 to form 2 moles of  NH_{3}, so, if you have 3,5 moles of H, which is equal to 1,75 moles of  H_{2}, and 5 moles of N, which are equal to 2,5 moles of  n_{2}. only\frac{1,75 moles of H2}{3}=0.583 moles of  N_{2}, will react, leaving <em>1.917 moles of </em> N_{2} <em>unreacted</em>, and forming 0.583*2=1.166 moles of  NH_{3}

3 0
3 years ago
Determine the specific heat of a material if a 35-9 sample absorbed 96 ) as it was heated from 293 Kto 313 K.
Norma-Jean [14]

This is an incomplete question, here is a complete question.

Determine the specific heat of a material if a 35 g sample absorbed 96 J as it was heated from 293 K to 313 K.

Answer : The specific heat of a material is, 0.137 J/g.K

Explanation :

Formula used to calculate the specific heat of a material is:

q=m\times c\times (T_2-T_1)

where,

q = heat absorbed = 96 J

m = mass of sample = 35 g

c = specific heat capacity of material = ?

T_1 = initial temperature = 293 K

T_2 = final temperature = 313 K

Now put all the given values in the above formula, we get:

96J=35g\times c\times (313-293)K

c=0.137J/g.K

Therefore, the specific heat of a material is, 0.137 J/g.K

5 0
4 years ago
using the symbol M for the element, write the chemical formula for the compound that forms when element M reacts with iodine.
Anon25 [30]

Answer : The chemical formula for the compound is, MI

Explanation :

When the element 'M' react with the I_2 to give MI.

The balanced chemical reaction is,

2M+I_2\rightarrow 2MI

In this reaction, 'M' is in mono-atomic form and I_2 is in diatomic form.

By the stoichiometry,

2 moles 'M' react with the 1 mole of I_2 to give 2 moles of MI.

Therefore, the chemical formula of the compound is, MI


6 0
4 years ago
Read 2 more answers
When 4.088 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 13.82 grams of CO2 and 2.829 grams of H
yarga [219]

Answer:

Empirical formula: CH

Molecular formula: C₆H₆

Explanation:

Based on the combustion of a hydrocarbon, the moles of CO₂ = Moles of Carbon in the hydrocarbon and the moles of H₂O = 1/2 moles of hydrogen in the hydrocarbon.

The empirical formula is the simplest whole number of atoms present in a molecule. With the moles of C and H we can find empirical formula:

<em>Moles C -Molar mass CO₂ = 44.01g/mol-:</em>

13.82g * (1mol / 44.01g) = 0.314 moles C

<em>Moles H -Molar mass H₂O = 18.01g/mol-:</em>

2.829g H₂O * (1mol / 18.01g) = 0.157 moles H₂O * (2mol H / 1mol H₂O) = 0.314 moles of H

The ratio of moles H: moles C:

0.314 moles / 0.314 moles = 1

That means empirical formula is:

<h3>CH</h3><h3 />

With the molecular weight and empirical formula we can find the molecular formula:

Molar mass CH = 12.01g/mol+1.01g/mol = 13.02g/mol

As the molecular weight of the molecule is 78.11amu = 78.11g/mol, there are:

78.11g/mol / 13.02g/mol = 6 times the empirical formula in the molecular formula

That means molecular formula is:

<h3>C₆H₆</h3>
4 0
3 years ago
A scients produces zinc iodide (Zn).
DiKsa [7]

Answer im a little confused what exactly you need answered. please clarify

Explanation:

7 0
3 years ago
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