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Lelu [443]
3 years ago
8

What are three elements that have similar chemical properties to oxygen

Chemistry
1 answer:
jok3333 [9.3K]3 years ago
4 0
Sulfur, selenium, and tellurium
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The combustion reaction of isopropyl alcohol is given below: C 3 H 7 O H ( l ) + 9 2 O 2 ( g ) → 3 C O 2 ( g ) + 4 H 2 O ( g ) T
jek_recluse [69]

Answer:

the heat of formation of isopropyl alcohol is -317.82 kJ/mol

Explanation:

The heat of combustion of isopropyl alcohol is given as follows;

C₃H₇OH (l) +(9/2)O₂ → 3CO₂(g) + 4H₂O (g)

The heat of combustion of CO₂ and H₂O are given as follows

C (s) + O₂ (g) → CO₂(g) = −393.50 kJ

H₂ (g) + 1/2·O₂(g)   →  H₂O (l) = −285.83 kJ

Therefore we have

3CO₂(g) + 4H₂O (g) → C₃H₇OH (l) +(9/2)O₂ which we can write as

3C (s) + 3O₂ (g) → 3CO₂(g) = −393.50 kJ × 3  =

4H₂ (g) + 2·O₂(g)   →  4H₂O (l) = −285.83 kJ × 4

3CO₂(g) + 4H₂O (g) → C₃H₇OH (l) +(9/2)O₂ = +2006 kJ/mol

-1180.5 - 1143.32 +2006 = -317.82 kJ/mol

Therefore, the heat of formation of isopropyl alcohol = -317.82 kJ/mol.

3 0
3 years ago
Find the force of an object that has an acceleration of 6.7 m/s2 and a mass of 12 kg.
ira [324]
It would be 80.4 newtons
6 0
2 years ago
An iron atom has an atomic mass of 56. Its atomic number is 26. How many neutrons does the iron atom have?
Ghella [55]

Answer:

30

Explanation:

atomic mass = proton number + neutron number

proton number is also atomic number

8 0
3 years ago
PLSSSSSS HELPPPPPPP FAST WILL GIVE BRAINLIEST I NEED A 3 PARAGRPAH ESSAY ON THIS SCIENCE ARTICLE!! INTRODUCION BODY AND CONCLUSI
Ksju [112]

Answer:

jst do the work

Explanation:

its not complicated,ask your teacher for help

3 0
2 years ago
Shaun's doctor has recommended that he consume 200 calories of protein a day. Shaun consumed 176 calories of protein in one day.
evablogger [386]

Answer:  Shaun must consume 6 more g of protein to reach the required amount.

Explanation:

Given : Recommended amount of protein = 200 calories

Now 4 calories = 1 gram of protein

Thus 200 calories = \frac{1}{4}\times 200=50 g of protein.

Calories consumed per day by Shaun = 176 calories

176 calories =  \frac{1}{4}\times 176=44 g of protein.

Thus Shaun need to consume = (50-44) g = 6 of protein to reach the required amount.

Shaun must consume 6 more g of protein to reach the required amount.

5 0
2 years ago
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