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Colt1911 [192]
4 years ago
11

What is the mole fraction of oxygen gas in air (see table 5.3 in the textbook)? express your answer using two significant figure

s?
Chemistry
1 answer:
enyata [817]4 years ago
3 0
Give me  some time and ill answer it 
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How many grams of sugar must be dissolved in 150 ML of water to make a solution that has a concern traction of .6 g/ml
grandymaker [24]

Hey there!:

Density = 0.6 g/mL

Volume = 150 mL

Mass = ?

therefore:

D = m / V

0.6 = m / 150

m = 0.6 x 150

m = 90.0 g of sugar

Hope this helps!

5 0
3 years ago
Which of following reactions shows the formation of a hydronium ion? H+ + H2O H3O+ H2O + CO2 H2CO3 NaOH Na+ + OH− H2O + NH3 OHâˆ
lesantik [10]
It can be formed by H+ ion and an H20 molecule also the chemical formula is H30+ or in other and easier way thus formula
H+ + H20=H30+
7 0
3 years ago
Read 2 more answers
Help plz!!!!!!!!!! Urgent
monitta

Answer:

Explanation:

10^-2

6 0
3 years ago
Help me please!!!!!!
Bingel [31]

Answer:

CH₄ + 2O₂ –> CO₂ + 2H₂O

The coefficients are: 1, 2, 1, 2

Explanation:

CH₄ + O₂ –> CO₂ + H₂O

The above equation can be balance by as follow:

CH₄ + O₂ –> CO₂ + H₂O

There are 4 atoms of H on the left side and 2 atoms on the right side. It can be balance by writing 2 before H₂O as shown below:

CH₄ + O₂ –> CO₂ + 2H₂O

There are 2 atoms of O on the left side and a total of 4 atoms on the right side. It can be balance by writing 2 before O₂ as shown below:

CH₄ + 2O₂ –> CO₂ + 2H₂O

Now, the equation is balanced.

The coefficients are: 1, 2, 1, 2

7 0
3 years ago
What function does the central vacuole in a plant cell performs
garri49 [273]
It functions to maintain the proper pressure within the plant cells to provide structure
5 0
3 years ago
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