A substance that has a uniform composition and is able to be separated by physical means
Answers
Related Questions
Which compound yields H + ions as the only positive ions in an aqueous solution?(1) KOH (3) CH3OH (2) NaOH (4) CH3COOH
How can a scientist prevent bias in a scientific investigation
The cell theory states that all new cells come from other cells. How do unicellular organisms reproduce? How is it different from how multi-cellular organisms increase?
Part CWhy are dichotomous keys useful in classifying a new species?
Answers
Answer:
3718.628 kPa.
Explanation:
- We can use the general law of ideal gas: PV = nRT.
where, P is the pressure of the gas in atm (P = ??? atm).
V is the volume of the gas in L (V = 2.0 L).
n is the no. of moles of the gas in mol (n = 3.0 mol).
R is the general gas constant (R = 0.0821 L.atm/mol.K),
T is the temperature of the gas in K (T = 298.0 K).
∴ P = nRT/V = (3.0 mol)(0.0821 L.atm/mol.K)(298.0 K)/(2.0 L) = 36.7 atm.
- To convert from atm to kPa:
∵ 1.0 atm = 101.325 kPa.
∴ P = (36.7 atm)(101.325 kPa/1.0 atm) = 3718.628 kPa.
Answers
Answer:
3.4
Explanation:
continental polar air mass
continental tropical air mass
maritime polar air mass
maritime tropical air mass
Answers
Answer: continental tropical air mass
Explanation:
The continental tropical mass of air forms over the Texas. It forms in the interior of the subtropical continents at about 150 to 350 North to South latitude. They can be characterized by the dry and hot air masses due to the temperature and moisture present in their source region. The tropical air masses originate in the tropical regions (warm regions) these typically have low air pressure.
Answer:
2
Explanation:
continental tropical air mass
Answers
Answer:
According to Brittanica, "Internal energy [is] the property or state function that defines the energy of a substance in the absence of effects due to capillarity and external electric, magnetic, and other fields."
B) renewable.
C) made from minerals.
D)Burned in hydroelectric plants.
2. Which of the fallowing is a consequence of using fossil fuels as an energy source?
A) decreased carbon dioxide levels
B)increased biodiversity
C) increased acid rain
D) decreased ecosystem disruption
3. Which of the fallowing is a renewable form of energy
A) gasoline
B) natural gas
C) wind
D) coal
4. Which of the fallowing activities would contribute the most to global warming?
A)driving a solar-powered car
B)snowmobiling around a national park
C)launching an engine less glider
D)trekking by horseback
5. Which of the fallowing sets of actions will conserve the most energy?
A)caulk windows, use cloth shopping bags, wash clothes in cold water
B)bicycle or walk, turn up thermostat in winter, run water while brushing teeth
C)buy compact fluorescent bulbs, use plastic shopping bags, buy heavily packaged foods
D)insulate walls, buy bottled water, dry laundry in a clothes dryer
20 points and brainliest answer for who answers this correctly
Answers
2) C
3) C
4) B
5) A
Question 7 options:
Their speeds are the same.
the object with the greater speed has greater kinetic energy
the object greater speed has the lower kinetic energy
the object with the smaller mass has the greater kinetic energy
Answers
Answer: Option (B) is the correct answer.
Explanation:
Kinetic energy is the energy due to the motion of an object.
Mathematically, K.E =
where m = mass
v = velocity
Therefore, an object whose velocity is more will have more kinetic energy.
Thus, we can conclude that out of the given options, the object with the greater speed has greater kinetic energy is true about their kinetic energy.