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
malfutka [58]
3 years ago
12

How manyy grams of h2 are needed to react with 20 grams of o2. please show work

Chemistry
1 answer:
tamaranim1 [39]3 years ago
6 0

Would it be 10, you know 1h for every 2o, H2O


You might be interested in
Consider the formula al2(so4)3. how many atoms of aluminum are present?
Shkiper50 [21]
2 atoms of aluminium
3 0
3 years ago
The AE of a system that releases 12.4 J of heat and does 4.2 J of work on its surroundings It is_______ jA. 16.6 B. 12.4 C. 4.2
andre [41]

ANSWER

EXPLANATION

Given that

The energy released by the system is 12.4J

Work done on the surrounding is 4.2J

Follow the steps below to find the change in energy

In the given data, energy is said to be released to the surroundings

Recall, that exothermic reaction is a type of reaction in which heat is released to the surroundings. Hence, change in enthalpy is negative

Step 1; Write the formula for calculating change in energy

\Delta E\text{ }=\text{ q }+\text{ w}

Since heat is released to the surrounding, then q = -12J

Recall, that work done by the system on the surroundings is always negative

Hence, w = -4.2J

Step 2; Substitute the given data into the formula in step 1

\begin{gathered} \text{  }\Delta E\text{ = q + w} \\ \text{  }\Delta E\text{ }=\text{ -12.4 }+\text{ \lparen-4.2\rparen} \\ \text{  }\Delta E\text{ = -12.4 - 4.2} \\ \text{  }\Delta E\text{ }=\text{ -16.6J} \end{gathered}

Therefore, the change i

3 0
1 year ago
Based on the concept of the global conveyor belt, what happens to ocean water as it moves from Antarctica to the equator?
Korolek [52]

Answer:

I think the answer is C

Explanation:

5 0
3 years ago
Read 2 more answers
The pH of a solution is 8. Some hydrochloric acid is added to the solution. Suggest the pH of the solution after mixing. pH=....
Molodets [167]

Answer:

Probably around 6 because the ph of hydrochloric acid is 3

Explanation:

3 0
2 years ago
How many moles of al does 13.49 g of al represent?
Harlamova29_29 [7]
Use equation
number of moles= sample mass/molar mass
7 0
3 years ago
Other questions:
  • Chlorine has two naturally stable isotopes: 35Cl (34.968853 amu) and 37Cl (36.965903 amu). The natural abundance of each isotope
    14·1 answer
  • Distinguish between metals, ionic compounds, and covalent compounds using information about the physical properties of a compoun
    5·1 answer
  • On approximately what day in 28-days cycle is the egg released from the ovary
    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
  • What elements mass number is 15
    12·2 answers
  • How is the mass in grams of the element converted to amount in atoms
    11·1 answer
  • Convert 3.4 kg to grams
    6·1 answer
  • What is the formula for triphosphorus tetrasulfide?
    11·1 answer
  • 9.7300x10^2 + 9.8700x10^3 <br><br> ? × 10^?
    13·1 answer
  • I need help in science
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!