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
makkiz [27]
2 years ago
8

Need help with this.

Chemistry
2 answers:
Nostrana [21]2 years ago
8 0

Answer:

D

Explanation:

because it is changing to its own compound of chemicals.

ankoles [38]2 years ago
3 0
The answer would be D!
You might be interested in
2. A reaction vessel is charged with hydrogen iodide, which partially decomposes to molecular hydrogen and iodine:2HI (g) H2(g)
Deffense [45]

Answer:

The value of Kp at this temperature is 7.44*10⁻³

Explanation:

Chemical equilibrium is established when there are two opposite reactions that take place simultaneously at the same speed.

For the general chemical equation for a homogeneous gas phase system:

aA + bB ⇔ cC + dD

where a, b, c and d are the stoichiometric coefficients of compounds A, B, C and D, the equilibrium constant Kp is determined by the following expression:

Kp=\frac{P_{C} ^{c} *P_{D} ^{d} }{P_{A} ^{a} *P_{B} ^{b} }

Where Px is the partial pressure of each of the components once equilibrium has been reached and they are expressed in atmospheres. The equilibrium constant Kp depends solely on temperature and is dimensionless.

In the case of the reaction:

2 HI (g) ⇔ H₂ (g) + I₂ (g)

the equilibrium constant Kp is determined by the following expression:

Kp=\frac{P_{H_{2} } *P_{I_{2} } }{P_{HI} ^{2} }

The system comes to equilibrium at 425 °C, and

  • PHI = 0.794 atm
  • PH2 = 0.0685 atm
  • PI2 = 0.0685 atm

Replacing:

Kp=\frac{0.0685*0.0685}{0.794^{2} }

Kp=7.44*10⁻³

<u><em>The value of Kp at this temperature is 7.44*10⁻³</em></u>

4 0
3 years ago
Isoflavones, quercetin and anthocyanins are all what type of phytochemicals
kykrilka [37]
Isoflavones, quercetin, and anthocyanin are all Flavonoids.
8 0
3 years ago
A pH scale has how many sections on it?
leva [86]

Answer:

0-14

Explanation:

3 0
3 years ago
A student fails to clean the pipet first. after delivering the vinegar sample, the student notices a drop of vinegar clinging to
VladimirAG [237]
This should not matter because the pipet has gradations and usually more of the sample is taken up in the pipette than what is delivered into the flask the student should always rinse the container being used because they are contaminating the sample if they do not clean it out
4 0
3 years ago
If 3.289 x 10^23 atoms of potassium react with excess water, how many grams of hydrogen gas would be produced?
GarryVolchara [31]

Answer:

The amount in grams of hydrogen gas produced is 0.551 grams

Explanation:

The parameters given are;

Number of atoms of potassium, aₙ = 3.289 × 10²³ atoms

Chemical equation for the reaction is given as follows;

2K + 2H₂O \rightarrow KOH + H₂

Avogadro's number, N_A, regarding the number of molecules or atom per mole is given s follows;

N_A = 6.02 × 10²³ atoms/mole

Therefore;

The number of moles of potassium present = 3.289 × 10²³/(6.02 × 10²³) = 0.546 moles

2 moles of potassium produces one mole of hydrogen gas, therefore;

1 moles of potassium produces 1/2 mole of hydrogen gas, and 0.546 moles of potassium will produce 0.546/2 moles of hydrogen which is 0.273 moles of hydrogen gas

The molar mass of hydrogen gas = 2.016 grams

Therefore, 0.273 moles will have a mass of 0.273×2.016 = 0.551 grams.

The amount in grams of hydrogen gas produced = 0.551 grams.

8 0
3 years ago
Other questions:
  • You find a geode while hiking. You place it on a scale and find it has a mass of 62 g.
    6·1 answer
  • A compound is a pure substance composed of two or more elements, combined by chemical means, in a definite ratio. Which containe
    5·1 answer
  • What is the molar mass of Cro2
    8·2 answers
  • if you are working with a radioactive source emitting particles of several kinds all positively charged not necessarily of the s
    9·1 answer
  • The wavelength of transmission is 9.7mm. What is the energy of this transition
    10·1 answer
  • List one or two ideas or questions you have about Mars. You can make the questions or ideas complex or simple! Just please put i
    12·2 answers
  • You see a worm crawling along the ground and wonder if scientists consider it living or nonliving. Which item below would not be
    11·1 answer
  • Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. half-reaction i
    8·1 answer
  • Chemistry homework about elements and compounds.
    15·1 answer
  • If the pOH of a nitric acid (HNO3) solution is measured as 11, what is the concentration of HNO3 solution?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!