Answer:
Due to the decrease in the gravitational force, it will take longer time for ball to reach the ground while dribbling. Moreover, the hang time of players will also be longer. This means that the players will stay on air longer and will be able to jump higher.
At what temperature will 41.6 grams of nitrogen gas (N2) exert a pressure of 1 point
1.07 atm in a 20.0 L cylinder?
Answer:
The temp is 176k
Explanation:
What is the volume of a 492.2g sample of Kr gas?
0.007601 L
131.6 L
5.870 L
21.97 L
Answer:
131.6 L
Explanation:
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the correct option is option B that is 131.5l. There is no force of attraction between the particles.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Ideal gas is a hypothetical gas. Vanderwaal behave as ideal gas at high temperature and low pressure.
Mathematically,
PV=nRT
where,
P = pressure=1 atm
V= volume=?
n =number of moles=given mass/ molar mass
= 492.2/ 83.79
= 5.87 moles
T =temperature = 273K
R = Gas constant = 0.0821 L.atm/K.mol
1× V = 5.87 × 0.0821 L.atm/K.mol × 273 K
V =131.5l
131.5l is the volume of a 492.2g sample of Kr gas.
Therefore, the correct option is option B that is 131.5l.
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Three students shine lights onto the same spot on a white table. One student shines a blue light. Another student shines a red light. The third student shines a
green light. What color will the spot appear to be?
black
B orange
white
yellow
Help plz asap
Metamorphic rock is formed from the weathering, erosion and cementing of sediments.
True
False
Answer:
False
Explanation:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
This question is reffering to sedimentary rocks, so it's false.
Answer:
Weathering (breaking down rock) and erosion (transporting rock material) at or near the earth's surface breaks down rocks into small and smaller pieces. When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.
Explanation:
True
please help PLSSSS
2020020200
Answer:Well the water molecules attract each other, and the oil molecules stick together.
sorry number two im not sure sorry:(
Explanation:
In the laboratory you dissolve 12.7 g of silver fluoride in a volumetric flask and add water to a total volume of 125. mL. What is the molarity of the solution?
Answer:
Molarity = 2.4 M
Explanation:
Given data:
Mass of silver fluoride = 12.7 g
Volume of water = 125 mL (125 mL× 1 L /1000 mL = 0.125 L)
Molarity of solution = ?
Solution:
Number of moles of silver fluoride:
Number of moles = mass/molar mass
Number of moles = 12.7 g/ 41.98 g/mol
Number of moles = 0.30 mol
Molarity:
Molarity = number of moles of solute / volume in L
Molarity = 0.30 mol / 0.125 L
Molarity = 2.4 M
PLEASE HELP!!!
True or False: Density is the property of a substance that describes how much mass of a substance is contained in the given weight of the substance.
A simple true or false please!
Answer:
False
Infered from the equation:
Density=[tex]\frac{Mass}{Volume}[/tex]
So it has no relation with weight of substance
What is one factor of how species are distributed on the Earth's continents?
Answer:
The most apparent general environmental factor affecting the distribution of a species is climate. Suitable conditions of temperature and moisture are vital to all organisms. Certain species are intolerant of cold; other species cannot live in warm climates.
What did Antoine Lavoisier’s experiments demonstrate?
A. Atoms always split into pairs during a chemical change.
B. Mass is neither lost nor gained during a chemical change.
C. Matter can be created during a chemical change.
D. Energy is neither lost nor gained during a chemical change.
4. What is the correct surface areas for a 45nm
wide cube?
Answer:
A = 12150 nm²
Explanation:
The side of a cube, a = 45 nm
We need to find the surface area of the cube.
The formula for the surface area of a cube is given by :
A = 6a²
Substituting the value of a in the above formula.
A = 6(45)²
= 12150 nm²
So, the surface area of the cube is 12150 nm²
Hi! My responsibility is to add and protection to plant cells. what i am
What chemical compound is H4PN?
Answer:
Diphosphane
Explanation:
Hope it helps
I NEED HELP ASAP !
1. How many molecules are in 643.21 grams of
Mg3(PO4)22
2. How much space (Liters) does 4.061 x 10-24
molecules of H202 take up?
3. How many H20 atoms are in 479.3 grams of
H20 gas?
4. How many grams does 80.34 L of Ca(NO3)2
weigh?
5. How many Liters of space does 893.7 grams
of CO2 take up?
6. How many grams are in 5139 x10425
molecules of Al(OH)3
Answer:
1.
643.21g 1 mol 6.022^23
262.87 g 1 mol
= 1.4735E24 [Mg3(PO4)2]
2.
4.061x10^24 1mol 22.4 (L)
6.022^23 1mol
= 151 liters H2O2
3.
479.3g 1 mol 6.022^23
18.02g 1mol
= 1.60E25 H20 atoms
4.
80.34L 1mol 164.1
22.4L 1mol
588.6g Ca(NO3)2
5.
893.7g 1mol 22.4
44.01g 1mol
= 427 L CO2 or 427.4
6.
5.39 x 10^25 1mol 78.01
6.022^23 1mol
= 6980g Al(OH)3
hope this helps!! :)
PLEASE HELP ILL EVEN MARK AS BRAINLIEST
Answer:
Cl: -29.272*
Explanation:
The other temperatures go from lowest to highest, H: -423* F, N: -320* F, F: -306.6* F
What is true about the structure or function of the plasma membrane?
A:It is made entirely of integral proteins.
B:Hydrophilic molecules attract the water the cell requires.
C:The processes of endocytosis and exocytosis occur here.
D:The double layer prevents anything from entering the cell
Answer: hi theree, the answer is c. the processes of endocytosis and exocytosis occur here
hope this helps, have a good day :)
Explanation:
Answer:
C. The processes of endocytosis and exocytosis occur here
Explanation:
I just took the k12 test
Can someone please answer any of these?
Answer:
A polar covalent bond is defined as the bond which is formed when there is a low difference of electronegativities between the two non metals. Example: Phosphorous and chlorine, Nitrogen and hydrogen
Non-polar covalent bond is defined as the bond which is formed when there is no difference of electronegativities between the atoms. Example: Oxygen and oxygen
Ionic bond is formed when there is complete transfer of electron from a highly electropositive metal to a highly electronegative non metal. The electronegative difference between the elements is high. Example: Potassium and chlorine
4 In which medium would an electromagnetic
wave travel the fastest?
A. air
C. vacuum
B. granite
D. water
Answer:
the correct answer is air.
Answer:
water
Explanation:
the medium an electromagnetic wave travel the fastest is in water
A 10-gram sample of water will lose the greatest amount of heat when its temperature is changed from 50°C to
1
10°C
2
20°C
3
30°C
4
40°C
Submit Answer
Hide Toolbar
Zoom: Standard
Na
Answer:
10°C
Explanation:
Here the problem deals with the relationship between the amount of heat lost and the temperature change of a body.
From the relationship below:
H = m C Δt
H is the quantity of heat
m is the mass
C is the specific heat
Δt is the change in heat
We can see that the quantity of heat is directly proportional to the Δt, so as more heat changes occur, so also is the value of Δt .
How do you shift realities?
I’ve been trying for weeks now
Answer:
1. learn how to script
2. be in a good state of mind
3. drink water water warer
4.search for yt tutorials
Explanation:
Tikiya is conducting experiments on samples of pure copper (Cu). While collecting data, Tikiya records both physical and chemical properties of the metal. Which of the following is dependent on the amount of copper particles in the sample? A. Electrical conductivity B. Thermal conductivity C. Mass D. Density
Answer: Mass
Explanation: I had the same question hope its right for you
Atmosphere
B
Ocean
Land
с
Which arrow or arrows represents a change of state from a liquid to a gas caused by the
sun's energy?
A. arrow A
B. arrow B
C. arrow A and arrow B
D. arrow B and arrow C
A gas has a volume of 250.0 liters at 17.0 °C and 3.00 atm of pressure. what volume must the gas be increased for the gas to be at STP conditions?
Answer:
0.706 L (Liters)
Explanation:
P1V1 = P2 V2 3 atm 250.0 mL = 1 atm X
T1 T2 290 K 273 K
706 mL = X
According to the question,
Pressure,
Initial, [tex]P_1 = 3 \ atm[/tex]Final, [tex]P_2 = 1 \ atm[/tex]Temperature,
Initial, [tex]T_1 = 17^{\circ} C[/tex] or, [tex]290 \ K[/tex]Final, [tex]T_2 = 273 \ K[/tex]Volume,
Initial, [tex]V_1 = 250 \ L[/tex]Final, [tex]V_2 = \ ?[/tex]By using the Boyl's and Charl's combination law, we get
→ [tex]\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}[/tex]
or,
→ [tex]V_2 = \frac{P_1 V_1 T_2}{T_1 P_2}[/tex]
By putting the values, we get
→ [tex]= \frac{3\times 250\times 273}{290\times 1}[/tex]
→ [tex]= 706 \ L[/tex]
Thus the aforementioned answer is right.
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Think of a substance that does not dissolve in water. Any Examples?
Answer:
sand, flour, water
Explanation:
Some substances that don't dissolve in water:
- sand
-flour
-oil
-fats
-plastics
How many atoms are there in 3.3 moles of strontium?
Explanation:
Multiply the moles Fe by 6.022×1023 atoms/mol
An object has a volume of 825 cm3 and a density of 13.6 g/cm3. Find its
mass
The mass of an object is the product of its volume and density. The mass of a the object with a volume of 825 cm³ and a density of 13.6 g/cm³ is 11220 g.
What is density ?Density of substance is the measure of its mass per unit volume. It describes how closely its particles are packed. Density depends on the bond type, temperature and pressure.
Volume of the object is the space occupied by its particles. Volume can be expressed in L, ml, cm³, dm³ etc. Only solids and liquids has a definite volume and the volume of gases is that of the container.
Give that, volume of the object = 825 cm³
density = 13.6 g/cm³
Mass = volume × density
m = 825 cm³ × 13.6 g/cm³ = 11220 g
Therefore, the mass of the object is 11220 g.
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in the reaction A+B = C+D if B is the excess what is the limiting reactant
Explanation:
Determining the Limiting Reagent
One reactant (A) is chosen, and the balanced chemical equation is used to determine the amount of the other reactant (B) necessary to react with A. If the amount of B actually present exceeds the amount required, then B is in excess, and A is the limiting reagent.
which of the following situations violates the law of conservation of energy?
A. a ball dropped from the top of a building in speed until it hits ground
B. a block sliding freely on level ice increases in speed until it hits a wall
C. A child playing on a swing moves fastest at the bottom of the swing's path
D. The height a ball bounces decreases with each bounce
Answer:
A. a ball dropped from the top of a building increases in speed until it hits the ground.
A ball dropped from the top of a building in speed until it hits ground is the situations violates the law of conservation of energy. Therefore, option A is correct.
What is the law of conservation of energy ?According to the law of conservation of energy, energy is neither created nor destroyed. When you roll a toy car down a ramp, and it collides with a wall, the energy is transferred from kinetic to potential.
Energy conservation does not imply energy savings. Instead, energy is neither created nor destroyed, according to the law of conservation of energy. When people use energy, it does not vanish. Energy is transformed from one form of energy to another.
The law of conservation of energy is violated when a ball is dropped from the top of a building at high speed until it hits the ground.
Thus, option A is correct.
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PLEASE HELP!! ILL MARK BRAINLIST!!
Complete the following equations (note that the equations are not balanced). Use the activity series if necessary. Li >>Ba > Sr> Ca > Na > Mg > AI > Mn> Zn > Cr> Fe > Cd > Co > Ni > Sn > Pb>H> Sb> Bi > Cu > Ag > Pd > Hg > Pt > Au Na+Cl2 → ?
- NaCl
- NaCl2
- Na2Cl
Answer:
its C
Explanation:
Answer: NaCl
Explanation:
Na+ Cl2 ----> NaCl
Which of the following is not a form of precipitation?
A
groundwater
B
balls of hail
C
sleet
D
snowflakes
A.
Reason: cuz i need points noob