1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lbvjy [14]
2 years ago
7

1. There are how many mol of oxygen in 3.5 mol of caffeine.

Chemistry
1 answer:
inysia [295]2 years ago
3 0

Answer:

7 mol

Explanation:

Caffeine molecular formula C8H10N4O2. It has 2 atoms of oxygen.

                          C8H10N4O2         - 2O

                           1 mol                        2 mol

                           3.5 mol                    x mol

x = 3.5*2/1 = 7 mol

You might be interested in
Compare and contrast the use of U-238 and C-14 in absolute age dating
Talja [164]

Carbon-14 and Uranium-238 have something we call a half live, which is basically a known time period for it to change half of its C-14 or U-238 radioactively decay. Since we know how long that is 5730 years for Carbon-14 for half a sample to deteriorate, than we can figure out how old it is.



7 0
3 years ago
Read 2 more answers
HELP ME PLS I NEED HELP
sesenic [268]
Lol your answer is c
3 0
3 years ago
A student neutralized 16.4 milliliters of HCl by adding 12.7 milliliters of 0.620 M KOH. What was the molarity of the HCl acid?
Katen [24]
V ( HCl ) = 16.4 mL / 1000 => 0.0164 L

M( HCl) = ?

V( KOH) = 12.7 mL / 1000 => 0.0127 L

M(KOH) = 0.620 M

Number of moles KOH:

n = M x V

n = 0.620 x 0.0127

n = 0.007874 moles of KOH

number of moles HCl :

<span>HCl + KOH = H2O + KCl
</span>
1 mole HCl ------ 1 mole KOH
<span>? mole HCl--------0.007874 moles KOH
</span>
moles HCl = 0.007874 * 1 / 1

= 0.007874 moles of HCl

M = n / V

M = 0.007874 / <span>0.0164

</span>= 0.480 M

Answer (2)

hope this helps!

4 0
3 years ago
Ionic compounds are normally in which physical state at room temperature?
Ivahew [28]
<span>Ionic compounds are normally in which physical state at room temperature in solid. The answer is A. 

</span>Ionic Compounds Are Balanced. Table salt is an example of an ionic compound. Sodium<span> and </span>chlorine<span>ions come together to form </span>sodium chloride<span>, or </span>NaCl<span>. The </span>sodium atom<span> in this compound loses an electron to become Na+, while the </span>chlorine<span> atom gains an electron to become Cl-.</span>
8 0
3 years ago
Read 2 more answers
What is the name of SnF2
Inessa [10]

Answer:

Tin (II) Fluoride......

7 0
3 years ago
Other questions:
  • A compound is found to contain 6.1% hydrogen and 93.9% oxygen. Find it’s empirical formula.
    15·1 answer
  • ) how much of the primary standard benzoic acid (fm 122.12, density 1.27 g/ml) should you weigh out to obtain a 100.0 mm aqueous
    14·1 answer
  • Stand on a bathroom scale and read your weight. When you lift one foot up so you’re standing on one foot, does the reading chang
    11·1 answer
  • Be sure to answer all parts. The equilibrium constant (Kp) for the reaction below is 4.40 at 2000. K. H2(g) + CO2(g) ⇌ H2O(g) +
    11·2 answers
  • Sodium chloride (table salt,) whose formula is NaCl: <br> Ionic <br> Covalent
    12·2 answers
  • Complete ionic equation for CuSO4 and Zn(NO3)2
    5·2 answers
  • A gaseous fossil fuel produced from organic matter that is used to heat homes and cook
    12·1 answer
  • one parent has type AB blood while the other has Type O blood.Which two blood type could their children have?
    12·1 answer
  • Can someone pls help with the first two fill in the blanks
    8·1 answer
  • What is true about the breakdown of starch?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!