Answer:
158.35 K
Explanation:
Using the general gas law
P₁V₁/T₁ = P₂V₂/T₂ where P₁ = 150.4 kPa, V₁ = 12.2 L, T₁ = 22.7 °C = 273 + 22.7 = 295.7 K, P₂ = 101.3 kPa, V₂ = 9.7 L and T₂ = unknown.
Making T₂ subject of the formula, we have
T₂ = P₂V₂T₁/P₁V₁
Substituting the values of the variables into the equation, we have
T₂ = P₂V₂T₁/P₁V₁
T₂ = 101.3 kPa × 9.7 L × 295.7 K/150.4 kPa × 12.2 L
T₂ = 290,557.777 K/1,834.88
T₂ = 158.35 K
what are the main forces that operate between nonpolar molecules
Answer:
Van der Waals forces
Explanation:
Answer:
Dispersion
Explanation:
They said it was the answer.
A gas that exerts a pressure of
15.6 psi in a container with a volume of
L will exert a pressure of
25.43 psi when transferred to a
container with a volume of 1.895 L.
Answer:
3.1L
Explanation: using Boyle's law p1v1=p2v2
p1=15.6,v1=?,p2=25.43,v2=1.895
manipulate the formula to favor so to find v1 the formula would be
p2v2/p1
25.43*1.895\15.6=3.1L
Complete the following reaction.
14
N+
7
C+ H
1
Answer: 23/10 n
Explanation:
Why do convection currents matter in our lives today? How do they affect us?
Answer:
Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth. These constantly circulating cells of hotter and cooler molten rock are thought to help heat the surface. Some geologists believe convection currents within the earth are a contributing cause of volcanoes, earthquakes, and continental drift.
Explanation:
Which terms below describes polymer that stretch
A. Elastomers
B. Thermosets
C. Polypropylene
D. Thermoplastic
(b) The heating element is made from metal. Write down two properties
of the metal so that it can be used in the heating element.
1.
[2]
2.
(c) Plastic and stainless steel are synthetic materials. What is meant by
synthetic?
[1]
Answer:
Two properties of heating metal
1.high melting points.
2.malleable
What is meant by synthetic?
1.made of artificial material, not natural items, synthetic is made up of chemical synthesis. (synthetic compound, synthetic drug, synthetic material)
Explanation:
1.They are solid (with the exception of mercury, Hg, a liquid).
2 They are malleable (they can be easily hammered into very thin sheets).
a solution is prepared by dissolving 4.85 g of HCl into enough water to make 2.50 L of a solution
Answer:
0.0532 M
Explanation:
Just did the test :)
In the equation:
2H2 + O2 --> 2H2O
What mass of Hydrogen Gas will completely react with 4 moles of Oxygen gas
(Hint: going from moles to mass of another compound)
A)8 g
B)16 g
C)24 g
Answer:
B) 16 g
Explanation:
2H₂ + O₂ → 2H₂OFirst we convert 4 moles of O₂ into moles of H₂, using the stoichiometric coefficients of the balanced reaction:
4 mol O₂ * [tex]\frac{2molH_2}{1molO_2}[/tex] = 8 mol H₂Finally we convert 8 moles of H₂ into grams, using its molar mass:
8 mol H₂ * 2 g/mol = 16 gThus, the correct answer is option B).
Please help me with this
Answer:
C
Explanation:
Protons and neutrons!
Have a great day :))))
The rate constant of a reaction is 6.4 × 10−3 s−1 at 25°C, and the activation energy is 33.6 kJ/mol. What is k at 75°C? Enter your answer in scientific notation.
Answer:
k₂ = 5 x 10⁻² s⁻¹
Explanation:
Using the Clausis - Clapyron Equation ...
ln(k₁/k₂) = ΔH/R(T₁-T₂/T₁·T₂) => lnk₂ = lnk₁ + ΔH/R(T₁-T₂/T₁·T₂)
k₁ = 6.4 x 10⁻³s⁻¹
ΔH = 33.6 Kj/mole
R = 0.008314 Kj/mol·K
T₁ = 25°C = 298K
T₂ = 75°C = 348K
lnk₂ = ln(6.4 x 10⁻³s⁻¹) + (33.6kj/mol·K/0.008314Kj/mol·K)·[(348K - 298K)/(348K)(298K)] = -3.10s⁻¹
k₂ at 75°C = exp(-3.10) = 5 x 10⁻²s⁻¹ (faster k-value at higher temp)
what energy is watching tv
1.thermal
2.sound
3.light
4.electrical
5.mechanical
Answer:
4. electrical
Explanation:
The answer is electrical let me know if it's right
Which layer of the ocean can support organisms that photosynthesize?
Answer:
Epipelagic zone
Explanation:
The Epipelagic zone is the upper most layer of the ocean. It is the layer which receives maximum sunlight, because of availability of sunlight and nutrients like fresh oxygen and atmospheric carbon dioxide, this zone is suitable for active photosynthesis activity.
PLEASE HELP
CH4 + 2O2
Answer:
the answer of the question is =ch4+2o2
How does the Sun get energy?
Answer:
Nuclear fushion
Explanation:
The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons
The law of conservation of mass is correctly demonstrated in which statement about cellular respiration
Answer:
The total mass of glucose and oxygen is equal to the total mass of carbon dioxide and water.
Explanation:
:)
Which of the following chemical equations is balanced correctly?
Cl2 + NaI—> 2 NaCl + 12
B202 + 2C—>B4C +CO
C6H6 + 02–>2C02 + 3H20
CS2 + 3C12–>CCl4 +S2Cl2
An atom is to a molecule as
A.a nail is to a hammer
B. A brick is to a house
C. A house cat is to a lion
D. A sentence is to a word.
Answer:
it is B ^^ have a great day
Answer:
the correct answer is c a brick to a house
Explanation:
E
Use the References to access important values if needed for this question.
According to the following reaction, how many moles of sodium hydroxide will be formed upon the complete reaction of 0.263 moles
sodium with excess water?
2Na(s) + 2H, 0() 2NaOH(aq) + H2(g)
mol sodium hydroxide
Submit Answer
Retry Entire Group
2 more group attempts remaining
Answer:
0.263 mole of NaOH
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
2Na + 2H₂O —> 2NaOH + H₂
From the balanced equation above,
2 moles of Na reacted to produce 2 moles NaOH.
Finally, we shall determine the number of mole of NaOH produced by the reaction of 0.263 mole sodium, Na. This can be obtained as follow:
From the balanced equation above,
2 moles of Na reacted to produce 2 moles NaOH.
Therefore, 0.263 mole of Na will also react to produce 0.263 mole of NaOH.
Thus, 0.263 mole of NaOH was obtained from the reaction.
Calculate the number of moles of solute in 27.55 mL of 0.1185 M K2Cr2O7(aq).
Answer:
0.01185M = moles/0.02755L
0.02755*0.01185=0.00032647
Explanation:
explain answer too, CHEM HELP
3.
Metals and nonmetals generally form ionic bonds
with each other. Which of the following sets of
elements will most likely form an ionic bond?
9
A. Na, F
B. CI, F C. Na, K D. He, O
Answer:
Na F
Explanation:
because electrovalent bond is present between them
Please help me thanks so much
Answer:
the answer is in the next one I just answered
The order of the layers from the inside of the Earth outwards is:
(10 Points)
Mantle, crust, core
Core, mantle, crust
Core, crust, mantle
Mantle, core, crust
What type of chemical bond holds 2Na+ and O2-together in
Na20?
a Metallic Bond
blonic Bond
C Molecular Bond
d Van der Waals' force
e Covalent Bond
Answer:
Covalent bond.
Explanation:
It involves sharing electrons equally between both molecules.
water is a ----------- natural resources
Answer:
True
Explanation:
True or false. Compounds are two or more DIFFERENT elements.
A. True
B. False
Answer:
the answer is letter B,FALSE
The difference between voltaic and electrolytic cells is that:
Answer:
Voltaic cells convert chemical energy to electrical energy by means of an oxidation-reduction reaction. Electrolytic cells convert electrical energy to chemical energy, so they are the opposite of voltaic cells. They require an input of electrical energy to cause an oxidation-reduction reaction.
Explanation:
that good enough for ya my asian friend?
Answer:
This is the answer hopefully you understand this also can you mark me brainliest pls
2. Which of the following is most likely to to cause the extinction
of a species?
A. Mutation
B. A changing environment
C.natural selection
D. Genetic variation
Answer:
a change of environment
A 3.6 g sample of iron (III) oxide reacts with sufficient aluminum to be entirely used up.
How much iron is produced?
Answer:
0.046 mol
Explanation:
Step 1: Write the balanced equation
Fe₂O₃ + 2 Al ⇒ 2 Fe + Al₂O₃
Step 2: Calculate the moles corresponding to 3.6 g of Fe₂O₃
The molar mass of Fe₂O₃ is 159.69 g/mol.
3.6 g × 1 mol/159.69 g = 0.023 mol
Step 3: Calculate the moles of Fe produced from 0.023 moles of Fe₂O₃
The molar ratio of Fe₂O₃ to Fe is 1:2.
0.023 mol Fe₂O₃ × 2 mol Fe/1 mol Fe₂O₃ = 0.046 mol Fe
A sample of nitrogen gas has a temperature of 22.7oC when the volume of the container is 12.2L and it is under 150.4kPa of pressure. What temperature, in Kelvin, would the gas need to be in order to occupy a 9.7L container at 101.3kPa? Show all your work and round your answer to the hundredths place.
22.7 degrees Celsius = 22.7 + 273 = 295.7 K
[tex]\frac{(12.2)(150.4)}{295.7}=\frac{(9.7)(101.3)}{T_{2}} \\ \\ \frac{295.7}{(12.2)(150.4)}=\frac{T_{2}}{(9.7)(101.3)} \\ \\ T_{2}=\frac{(295.7)(9.7)(101.3)}{(12.2)(150.4)} \approx \boxed{158.35 \text{ K}}[/tex]