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
Travka [436]
2 years ago
10

Does anyone know the answer for this

Chemistry
1 answer:
oksian1 [2.3K]2 years ago
6 0

Answer:

ooooooo send a picture written please then I may help

You might be interested in
What affect does attendance have on students' grades in science class? Write the independent variable, the dependent variable, a
alexira [117]
Independent variable: the student chooses to miss class.
dependent variable: in result of the student missing class his grade goes down.
hyposthesis: if the student misses class multiple times, then his grades will go down.
6 0
3 years ago
What is the molarity (molar concentration, unit = M) of K+ found in 200 mL 0.2 M K2HPO4 solution?
enyata [817]

Answer:

0.4 M

Explanation:

The process that takes place in an aqueous K₂HPO₄ solution is:

  • K₂HPO₄ → 2K⁺ + HPO₄⁻²

First we <u>calculate how many K₂HPO₄ moles are there in 200 mL of a 0.2 M solution</u>:

  • 200 mL * 0.2 M = 40 mmol K₂HPO₄

Then we <u>convert K₂HPO₄ moles into K⁺ moles</u>, using the <em>stoichiometric coefficients</em> of the reaction above:

  • 40 mmol K₂HPO₄ * \frac{2mmolK^+}{1mmolK_2HPO_4} = 80 mmol K⁺

Finally we <em>divide the number of K⁺ moles by the volume</em>, to <u>calculate the molarity</u>:

  • 80 mmol K⁺ / 200 mL = 0.4 M
5 0
2 years ago
Zinc reacts with aqueous sulfuric acid to form hydrogen gas: zn(s) h2so4(aq) ? znso4(aq) h2(g) in an experiment, 201 ml of wet h
WINSTONCH [101]
The products of reaction are ZnSO4 and H2. Since ZnSO4 is in aqueous form (aq), therefore only H2 and water vapor contributes to the overall total pressure in the system.
Total Pressure = 764 torr = H2 partial pressure + Water partial pressure
Since Water partial pressure is 26.74 torr so,
H2 partial pressure = 737.26 torr = 0.97 atm
3 0
3 years ago
If you have 12 atoms of hydrogen before a chemical reaction, how many atoms of hydrogen will be present
soldi70 [24.7K]

Answer:

《HOPE IT WILL HELP YOU 》

Explanation:

I think the present atom of hydrogen will 1

6 0
3 years ago
According to the Kinetic Molecular Theory, the absolute temperature of a gas is directly related to average molecular kinetic __
Ludmilka [50]
The absolute temperature of a gas is directly related to average molecular kinetic Energy law.
4 0
3 years ago
Read 2 more answers
Other questions:
  • I have 345mL of a 1.5M NaCl solution. If I boil the water until the volume of the solution is 250mL, what will the molarity of t
    6·1 answer
  • The complete combustion (reaction with oxygen) of liquid octane (C8H18) a component typical of the hydrocarbons in gasoline, pro
    10·1 answer
  • How many moles are in Ca+
    10·1 answer
  • A 75 g piece of gold (Au) at 1000 K is dropped into 200 g of H2O at 300K in an insulatedcontainer at 1 bar. Calculate the temper
    15·1 answer
  • Which of the following processes have a ΔS &gt; 0? A. N2(g) + 3 H2(g) → 2 NH3(g) B. Na2CO3(s) + H2O(g) + CO2(g) → 2 NaHCO3(s) C.
    5·1 answer
  • The chemical equation of the reaction between Hydrogen and Oxygen is given below
    7·1 answer
  • Jen makes a Venn diagram to compare active transport and passive transport.
    7·2 answers
  • Which of these pairs of elements have the same number of valence electrons?​
    13·1 answer
  • Which method of separation would be most appropriate for separating a mixture of water and alcohol?
    8·2 answers
  • A 2.0 L container of nitrogen gas had a pressure of 3.2 atm. What volume would be necessary to decrease the pressure to 1.0 atm
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!