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
Natasha_Volkova [10]
3 years ago
14

Xg of U and 3.795 g of O combine to form 20.00 g of

Chemistry
1 answer:
Deffense [45]3 years ago
8 0

The percent composition of Uranium in U308 = C. 81.03%

<h3>Further explanation</h3>

Given

X g of U

3.795 g of O

20.00 g of  U308

Required

The percent composition of Uranium

Solution

mass of Uranium in U308 :

= mass of U308 - mass of O

= 20 g - 3.795 g

= 16.205 g

The percent composition :

\tt \%U=\dfrac{mass~U}{mass~U308}\times 100\%

%U = (mass U/mass U308) x 100%

%U= (16.205/20) x 100%

%U = 81.025≈81.03

You might be interested in
Describes changes<br> in energy during a chemical reaction?
zysi [14]

Answer:

Yes

Explanation:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

3 0
3 years ago
Glucose is a carbohydrate that contains carbon hydrogen and oxygen. The empirical formula of glucose is CH2O and it’s molar mass
shtirl [24]
Glucoses and carbonated
6 0
2 years ago
What does matter have to do with chemistry? How are forces involved?
romanna [79]
Matter is every object that stands on this Earth
5 0
3 years ago
Read 2 more answers
How many atoms are in a solid piece of iron that has a mass of 24.0g?
Julli [10]
Atomic mass iron ( Fe ) = 55.84 a.m.u

55.84 g ------------ 6.02x10²³ atoms
24.0 g ------------- ??

24.0 x ( 6.02x10²³) / 55.84

=> 2.58x10²³ atoms
5 0
3 years ago
Suppose that coal of density 1.5 g/cm^3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first a
NISA [10]

Answer:

q = -6464.9 kJ

Explanation:

We are given that the heat of combustion is  ∆H° = −394 kJ per mol of carbon.Therefore what we need to do is calculate how many moles of C are in the lump of coal by finding its mass since the density is given.

vol = 5.6 cm x 5.1 cm x 4.6 cm = 131.38 cm³

m = d x v = 1.5 g/cm³ x 131.38 cm³ = 197.06 g

mol C = m/MW = 197.06 g/ 12.01g/mol = 16.41 mol

q =  −394 kJ /mol C x 16.41 mol C = -6464.9 kJ

7 0
3 years ago
Other questions:
  • The activation energy for the reaction no2(g)+co(g)⟶no(g)+co2(g) is ea = 100 kj/mol and the change in enthalpy for the reaction
    13·1 answer
  • How many single covalent bonds must a fluorine atom form to have a complete octet in its valence shell?
    15·1 answer
  • A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M 1.0 M nickel(II) ion solution and another elect
    9·1 answer
  • Which of the following best defines weather?
    11·1 answer
  • Hana fills a cup with sandy ocean water. She pours the mixture through a filter. What does she collect that passes through the f
    10·2 answers
  • Which of the following is a major concern of nuclear energy
    14·1 answer
  • A mothball, composed of naphthalene (C10H8), has a mass of 1.98 g . How many naphthalene molecules does it contain?
    9·1 answer
  • Osmium (Os) is the densest element known (density =22.57 g/cm^3). Calculate the mass in pounds and in kilograms of an Os sphere
    15·1 answer
  • HELP ASAP ILL GIVE YOU 40 POINTS IF YOUR CORRECT!
    14·2 answers
  • All living things require an outside source of materials and energy. All of the chemical reactions that occur within a cell to p
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!