890J of heat are applied to a piece of aluminum, causing a 4.6°C increase in its temperature. The specific heat of aluminum is 0.902 J/g°C. What is the mass of aluminum?
Question 12 options:
175g
3,693g
214g
0.00220g
Answer:
214
Explanation:
Q=mco
Q=heat
M is mass
C is specific heat
O is increased in temperature
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Answer:
get what right?
Answer:
You didn't post the question.
Explanation:
Edit your question and I'll try to help you.
Hope this helped? Lol.
Using the half-life graph of cobalt-57, choose ALL the statements that are accurate.
es )
A)
The half-life of Co-57 is 20 days.
B)
The half-Life of Co-57 is 10 days.
C)
After fifty days, there is 0% or no Co-57 remaining.
D)
After twenty days have elapsed, about 25% of the Co-57 remains.
E)
Scientists have an 8 gram sample of Co-57. After thirty days, 1 gram
remains.
Answer: B) The half-life of Co-57 is 10 days
D) After twenty days have elapsed, about 25% of the Co-57 remains.
E) Scientists have an 8 gram sample of Co-57. After thirty days, 1 gram remains.
Explanation:
At what temperature do atoms lose all of their Kinetic Energy?
zero kelvin, or minus 459.67 degrees Fahrenheit (minus 273.15 degrees Celsius)
Does someone know the answers?
Answer:
b)sugar and water : Sedementation
d) salt and water : evaporation
If the temperature of a gas inside a flexible container with a volume of 50 liters (L) decreases from 500°C to 100°C what will be the new volume of the container?
40.00L
10.00L
24.13L
103.6L
If the temperature of a gas inside a flexible container with a volume of 50 liters (L) decreases from 500°C to 100°C, then new volume will be 10L.
What is the relation between volume and temperature?Volume and temperature of the gas is directly proportional to each other and for this question, equation becomes,
V₁/T₁ = V₂/T₂, where
V₁ = initial volume = 50L
T₁ = initial temperature = 500°C
V₂ = final volume = ?
T₂ = final temperature = 100°C
On putting values, we get
V₂ = (50)(100) / (500) = 10L
Hence required volume of gas is 10L.
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Question 2: (Show your dimen analysis work!)
What is the mass of 7.2 mol of Sulfur?
g-
which would most likely cause a rise in sea levels
Answer:
B. melting of ice caps
Explanation:
Can anyone help me with this question??
No links please!
Answer: 6
Explanation: 2*3=6
help me get this right no links
Answer:
The moons gravitational pull on Earth
PLEASE HELP NEED AN ANSWER ASAP!!!!
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Two graphs above show a catalytic reaction, which color of balls represents a catalyst?
Select one:
a. Purple
b. Blue
c. Red
d. Green
I need help cause this teacher won’t stop cursin
Help me get it right and no links
Answer:
i think the second answer " fish migration might be prevented" might possibly be your answer
what do you call the materials in which electricity pass easily?
a. insulator
b. conductors
c. non conductors
d. metallic
Answer:
Conductors
Explanation:
why is deuterium-tritium reaction the most promising nuclear fusion reaction for future energy production?
Answer:
The deuterium-tritium (DT, Figure 2) reaction is the most useful for fusion energy because it most easily overcomes the Coulomb repulsion, and it has the highest energy release among laboratory-feasible reactions.
Explanation:
When a deuterium nucleus (2H) and a tritium nucleus (3H) combine, the result is a helium nucleus and a very energetic neutron. Under the right circumstances, the energy released is sufficient to induce further fusion reactions.
63.15 mL of calcium hydroxide is required to titrate 18.9 mL of a 0.200 M H3PO4 solution. What is the molarity of the basic solution?
Answer:
0.0898M is the molarity of the basic solution
Explanation:
The reaction of calcium hydroxide, Ca(OH)₂ with H₃PO₄ is:
3 Ca(OH)₂ + 2 H₃PO₄ → 6H₂O + Ca₃(PO₄)₂
To solve this question we must find the moles of H3PO4 that react. With the moles and the rection we can find the moles of Ca(OH)2. Using its volume we can find its molarity:
Moles H3PO4:
0.0189L * (0.200mol / L) = 0.00378 moles H3PO4
Moles Ca(OH)2:
0.00378 moles H3PO4 * (3mol Ca(OH)2 / 2mol H3PO4) = 0.00567 moles Ca(OH)2
Molarity:
0.00567 moles Ca(OH)2 / 0.06315L =
0.0898M is the molarity of the basic solutionA 5.0 g piece of metal at 100c is cooled to 15c.It releases 318.3 J of heat in the process.Calculate the specific heat of the metal
Answer:
Water has a very high heat capacity, which makes it useful for radiators ... the temperature change that a given substance will undergo when it is either heated or cooled. ... The heat that is either absorbed or released is measured in joules. ... A 15.0 g piece of cadmium metal absorbs 134 J of heat while rising from 24.0°C to ...
The following chemical equations are organized by reaction type. You must balance each reaction, and show your work
Answer:
lets be honest
Explanation:
no one knows and this is worthless to answer for the worth of 5 points
B) A company president would like to offer a 4.00 L cylinder containing 500 g of chlorine in the new catalog. The cylinders you have on hand have a rupture pressure of 40 atm. Use both the ideal gas law and the van der Waals equation to calculate the pressure in a cylinder at 25°C. Given a = 6.58 L2 atm mol-2 and b = 0.056 L mol-2, Cl =35.5. (5 marks)
Answer:
43.1atm is the pressure using gas law and 27.2atm using Van der Waals Law.
Explanation:
Ideal gas law is:
PV = nRT
Where P is pressure in atm
V is volume = 4.00L
n are moles of the gas (For chlorine Molar Mass: 70.90g/mol):
500g * (1mol / 70.90g) = 7.052 moles
R is gas constant = 0.082atmL/molK
T is absolute temperature = 25°C + 273 = 298K
To solve the pressure, P:
P = nRT/V
P = 7.052mol*0.082atmL/molK*298K / 4.00L
P = 43.1atm is the pressure using gas law.
Van der Waals equation is:
[tex]P + a(\frac{n}{V})^2 * (V-nb) = nRT[/tex]
Where a is 6.58L²atm*mol⁻²
b = 0.056Lmol⁻²
Solving for pressure:
[tex]P + a(\frac{n}{V})^2 = \frac{nRT}{(V-nb)}[/tex]
[tex]P = \frac{nRT}{(V-nb)}-a(\frac{n}{V})^2[/tex]
[tex]P = \frac{7.052mol*0.082atmL/molK*298K}{(4.00L-7.052mol*0.056L*mol)}-6.58L^2mol^{-2}(\frac{7.052mol}{4.00L})^2[/tex]
P = 172.323 / 3.6051 - 20.4866
P = 27.2atm using Van der Waals Law
Which field of study examines homologous structures?
A) Genetics
B) Embryology
C) Comparative Anatomy
D) Physics
How many Liters of space will a 70.0g sample of CO2 occupy? You must show all work to receive full credit.
Answer: the answer is 35.6
Explanation:
Look up the answer but take out you must show all your work and resources should pop up I’m on the same question now for chemistry so I’m putting 35.6L
Explain how you find the instantaneous speed or velocity of an object
I dont want to know WHAT it is I want to know HOW to find it
Answer:
divide the distance by the average
Explanation:
ash QC ok
Discuss the issue of “energy return” when considering a biofuel
Explanation:
Regarding non-GHG environmental impacts, research suggests that production of biofuel feedstocks, particularly food crops like corn and soy, could increase water pollution from nutrients, pesticides, and sediment (NRC 2011). Increases in irrigation and ethanol refining could deplete aquifers (NRC 2011).Regarding non-GHG environmental impacts, research suggests that production of biofuel feedstocks, particularly food crops like corn and soy, could increase water pollution from nutrients, pesticides, and sediment (NRC 2011). Increases in irrigation and ethanol refining could deplete aquifers (NRC 2011)
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A cube has a mass of 100g and each side is 5cm. What is its density?
help, also brainly dont be mean and delete this.
if you steal my points, please dont i need genuine help
Answer:
I dont understand what is the question you need help on-
Explanation:
During a phase change, such as melting or boiling, the kinetic energy __. Highlight correct answer
Answer: During a phase change, such as melting or boiling, the kinetic energy increases.
Explanation:
Kinetic energy is the energy obtained by the molecules of a substance due to their motion.
When phase change such as melting or boiling takes place then it means heat is absorbed by the substance. As a result, their molecules more even more rapidly from one place to another due to which more number of collisions take place.
Hence, a change in phase of substance occurs as kinetic energy increases in melting or boiling process.
Thus, we can conclude that during a phase change, such as melting or boiling, the kinetic energy increases.
Which process is exothermic?
a) the vaporization of water b) the freezing of water c)the sublimation of dry ice d ) the boiling of liquid nitrogen
Answer:
Freezing of water
Explanation:
When water becomes a solid it releases heat into its surroundings (warming it up).
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Arcturus is a star whose surface temperature is 4290 K. What is most likely the color of Arcturus? What is most likely the mass of Arcturus? about solar masses
Answer:
orange
0.8
Explanation:
On egde
Acturus which is a star with surface temperature 4290 K is orange in color and has a mass of 0.8 kilograms.
What is a star?
A star is an astronomical object comprising a luminous spheroid of plasma held together by self-gravity. The nearest star to Earth is the Sun. Many other stars are visible to the eye at night, but their immense distances from Earth make them appear as fixed points of light. The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names.
Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. The observable universe contains an estimated 1022 to 1024 stars.A star's life begins with the gravitational collapse of a gaseous nebula of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements.
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Is oil a no renewable energy source
Answer:
Yes, oil is a non renewable energy source
Explanation:
Because once these resources are used up, they cannot be replaced.
Answer:
yes its a nonrenewable resource because once you use it you cant put it back
Explanation: