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
djyliett [7]
2 years ago
14

Calculate the pressure (in kpa) of 1.5 mole of helium gas at 354 k when it occupies a volume of 16.5l.

Chemistry
1 answer:
3241004551 [841]2 years ago
8 0

Answer:

267.57 kPa

Explanation:

Ideal gas law:

PV = n RT        R = 8.314462    L-kPa/K-mol

P (16.5) = 1.5 (8.314462)(354)       P = 267.57 kPa

You might be interested in
What can you say about the amount of electrons found in the second ring
Amiraneli [1.4K]

Answer:

The second ring in an atom can only hold up to 8 electrons.

8 0
2 years ago
Use the periodic to fill in the numbers in the electron configurations shown below
grigory [225]

 Your answer to your question is: 1s² 2s² 2p⁶

4 0
3 years ago
How many “dots” would be around the central atom in the Lewis structure of S?
agasfer [191]
B) 6
one above one below and 2 on the left and right sides
6 0
3 years ago
Read 2 more answers
Calculate ΔH∘f for NO(g) at 435 K, assuming that the heat capacities of reactants and products are constant over the temperature
weeeeeb [17]

Answer:

91383 J

Explanation:

The equation of the reaction can be represented as:

\frac{1}{2} N_{2(g)}+\frac{1}{2} O_{2(g)}     ------>NO_{(g)}

Given that:

The standard enthalpy of formation of NO(g) is 91.3 kJ⋅mol−1 at 298.15 K.

The equation below shown the reaction between the enthalpy of reaction at a particular temperature to another.

\delta H^0__{R,T_2} = \delta H^0__{R,T_1} } + \int\limits^{T_2}_{T_1} {\delta C_p(T')} \, dT'

where:

\delta H^0__{R} = enthalpy of reaction

{\delta C_p(T')} = the difference in the heat capacities of the products and the reactants.

∴

\delta H^0__{R,435K} = \delta H^0__{R,298.15K} + \int\limits^{435}_{298.15} {\delta C_p(T')} \, dT'

= 1(91300 J.mol^{-1} ) +\int\limits^{435}_{298.15} [{(29.86)-\frac{1}{2}(29.38)-\frac{1}{2}29.13}]J.K^{-1}.mol^{-1} \, dT'

= 91300 J + (0.605 J.K⁻¹)(435-298.15)K

= 91382.79 J

\delta H^0__{R,435K} ≅ 91383 J

6 0
3 years ago
One quarter of a 1-mole piece of iron turns to rust in six months. Which rate describes the speed at which the iron rusts?
avanturin [10]
1/4 mol = 0.25 mol

6 months = 0.5 year

rate = 0,25 mol / 0.5 year = 0.5 mol/year or approx 0.042 mol/month
7 0
3 years ago
Read 2 more answers
Other questions:
  • How do the atoms that make up matter affect its characteristics and behavior?
    14·1 answer
  • What is the density of 35 ml of a liquid that has a mass of 28.7 g?
    12·2 answers
  • Acetic acid (ch3cooh) can be a buffer, similar to carbonic acid. write the dissociation reaction, identifying the acid, base, h+
    12·1 answer
  • When balanced, which equations would have the coefficient 3 in front of the first set of atoms? Check all that apply. A. AgBr +
    9·1 answer
  • write word and formula equation for the reaction in which aqueous solutions of sulfuric acid and sodium hydroxide reacts to form
    8·2 answers
  • PLEASE HELP IM SO CONFUSED
    6·2 answers
  • PLEAEEEE HELPPP
    12·1 answer
  • Burning magnesium gives us magnesium oxide. This is an example of a reaction.
    14·2 answers
  • If 1.785 g of ethanol (CHCHOH) is burned in a constant volume calorimeter causing a temperature increase of 4.32C, then what is
    15·1 answer
  • What type of factors affect the speed of light? explain
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!