Answer:
Glossopteris
Explanation:
Glossopteris is a fossil fern that helped support Wegener's hypothesis.
Hope this helps! Have a great day!
How did the us stop the spread of communism during the Cold War
Answer:
With the policies of containment, the United States hoped to effectively stop the spread of communism and their newest threat. After the war, the United States and the Soviet Union had very different ideas on how to rebuild.
Which of the following creates greenhouse gases during the generation of electricity?
Answer:
carbon dioxide makes up the variety of greenhouse gas emission from the sector but smaller amount of methane nitrous oxide are also emmited and all these gases are released during the combustion of fossil fuels, such as coal,oil and natural gas, to produce electricity
Europe and United States use geothermal power extensively.
True
False
Answer:
True
Explanation:
US. With an installed capacity of 3,639MW in 2018, the US is the leading producer of geothermal energy across the world, producing 16.7 billion kilowatt hours (kWh) of geothermal energy throughout the year. More recently, extensive direct heat utilization projects have been undertaken in many European countries, and electric power developed extensively in Italy and Iceland. Geothermal heat pumps became extensively used in Austria, Switzerland, Germany and Sweden (Antice, Miklos and Sanner, Burkhard, 2007).
zinc, sulphur, oxygen
What would this compound be called?
Zinc sulphate
Zinc sulphateZnSO₄
This is the answer.
pls help me answer this!
Answer:
neutrons is metal.......
1.
If the hydrogen ion concentration of a solution is 1.30 x 10*M
What is the pH of the solution?
Answer:
h
Explanation:
gy
3. The hydroxide-ion, [OH-], concentration in a detergent solution is 1.0 x 10-3 M. What is [H+] concentration in the detergent solution?
A) 1.0 x 10^-11 M.
B) 1.0 x 10^-9 M.
C) 1.0 M
D) 0.001 M
Answer:
c
Explanation:
h
HELPPPPPPPPPPPPPPPPP
The water is formed from oxygen gas and...hydrogen gas, I'm assuming? It would have been nice for the question to have been a bit more explicit (not blaming you, of course).
Assuming that's the case, our chemical reaction would be:
2H₂(g) + O₂(g) → 2H₂O(l).
We are told that 1 mol of a gas has a volume of 24.0 dm³ at RTP. We can use this relation to determine the number of moles of O₂ gas that reacts given its initial volume, 33.5 dm³.
33.5 dm³ O₂(g)/24.0 dm³/mol = 1.396 mol O₂(g).
Since we are not given any information about H₂(g), or any other reactant for that matter, I am assuming that the O₂(g) is the limiting reactant. According to the equation, the stoichiometric ratio between O₂ and H₂O is 1:2. That is, for every one mole of O₂ that is consumed, two moles of H₂O are formed (i.e., the number of moles of H₂O formed is double the number moles of O₂).
Since 1.396 moles of O₂ reacts, 2(1.396) = 2.792 moles of H₂O are produced. To convert moles of water to grams, we multiply the number of moles of H₂O by the molar mass of H₂O:
(2.792 moles H₂O)(18.015 g/mol) = 50.3 g H₂O.
So, approximately 50.3 grams of water are formed from 33.5 dm³ of oxygen gas at RTP.
CAN SOMEONE HELP ASAP!!
Answer:
1.melting
2.freezing
3.
Explanation:
That's all I got sorry
Answer:
Look at the picture
Explanation:
Stronger acids are those that -
O more completely inhibit polarity in water
O exhibit hydrogen bonding
O hold on to their protons more strongly
O lose their protons more easily
How will popcorn protect a egg by reducing the force of impact on the egg? How does it work?
Answer:
The popcorn will take less impact because the force goes into the popcorn serving as a cushion for the egg. The egg will take less damage because the force will cancel out.
Explanation:
Displacement
A. Must be in a particular direction
B. Is the change in position of an object
C. Must be in a straight line
D. All of the above
Answer:
Option D
Explanation:
Displacement is a vector quantity.
+
What category would the following amino acids be placed in and are they in the Lord
configuration? (2 marks)
COO-
A)
COO-
B)
H2N-C-H
H-C-NH3
CH2
CH2
OH
Which of the following is the best example of a symbiotic relationship?
Certain breeds of fish will often clean bigger fish. The cleaner fish gets food, the bigger fish gets a cleaning.
or
A foolish man decides to go swimming in shark-infested waters. As a result, he is bitten by a shark looking for food.
or
A pair of birds fight over a piece of food. The dominant bird wins.
or
The climate changes. As a result, hundreds of species become extinct and the land turns into a desert.
?
Answer:
Certain breeds of fish will often clean bigger fish. The cleaner fish gets food, the bigger fish gets a cleaning.
I'm not too sure.
Good luck! <3
This diagrams represents...
a
a pure substance containing diatomic molecules
b
a pure substance containing compounds
c
a mixture containing compounds
d
a mixture of atoms
The coolest stars tend to be which color? A. White B. Blue C. Yellow d. Red
Answer:
D
Explanation:
red
Answer:
Red stars are the coolest along the colors and temperatures of stars.
Explanation:
Hope this helps! <3
If 0.583 g of ammonia (NH3) is dissolved to make 250 mL of solution, what is the molarity?
Answer:
0.137 M NH3
Explanation:
First divide the mass of NH3 by the molar mass of NH3, and then divide by the volume to get molarity.
0.583 g / 17.031 g/mol = 0.0342 mol NH3
0.0342 mol NH3 / 0.250 L = 0.137 M NH3
Select the word that fits in the two blanks below: This is made up of two systems; a central ________ system and a peripheral ___________ system.
Answer:
Nervous; nervous.
Explanation:
A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.
Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.
Generally, the nervous system found in living organisms such as humans, comprises of two (2) major components or systems; a central nervous system (CNS) and a peripheral nervous system (PNS).
A sample of gas at 300k has a volume of 2 liters at what temperature will the volume decrease to 1 liter if the pressure is kept constant
Answer:PV=nRT ideal gas law
P presdure
V volume
n number of moles of gas
R gas constant
T temperature
Explanation: V=nRT/P
2liters=nR300k/P
divide by 2 for the equation
1liters=nR150k/P
with nR remaining constant
Se tiene un litronde solucion de agua con alcohol con una consentracion del 4.5% v/v ¿Cuanto alcohol se tiene en la solución
Answer:
45 mL
Explanation:
Tenemos los siguientes datos:
V = 1 L
C = 4,5% v/v
El porcentaje en volumen (%v/v) expresa el volumen de soluto (alcohol en este caso) que hay cada 100 mL de solución. Si la solución tiene una concentración del 4,5% v/v eso quiere decir que hay 4,5 ml de alcohol cada 100 ml de solución, de acuerdo a lo siguiente:
4,5% v/v alcohol = volumen alcohol/ volumen solución x 100 = 4,5 mL alcohol/100 mL solución= 4,5 mL alcohol/0,1 L alcohol
Por lo tanto, al multiplicar por el volumen total de la solución (1 L), obtenemos la cantidad total de alcohol:
4,5 mL alcohol/0,1 L alcohol x 1 L = 45 mL
HELPPP!!!
Using the following data, which is the correct rate law of the sample reaction?
A5B + 6C 3D + 3E
Experiment (A) (M) [B] (M) [C](M) Initial Rate (M/s)
1
0.35 0.35 0,35 8.0 x 104
2
0.70
0.35
0.35
3.2 x 10-
3
0.70
0.70
0.35
6,4 x 10-8
4
0.70
0.35
0.70
3.2 x 10-3
A.) K[A]^2 [B]^1 [C]^1
B.) K[A]4 [B]^2 [C]^1
C.) K(A)^2 [B]^1 [C]^O
D.) k[A]^1 (B)^2 [C]^O
i think its C not so sure rho
good ,uck!!!!
Based on the data given, the correct rate law of the sample reaction is: C. [tex]R = K[A]^2[B]^1[C]^0[/tex]
What is the rate law?Rate law can be defined as a chemical equation that is typically used to relate the initial (forward) chemical reaction rate with respect to the concentrations or pressures of the chemical reactants and constant parameters.
Mathematically, the rate law is given by this formula:
[tex]R = K[A]^x[B]^y[C]^z[/tex]
Where:
k is the rate constant.A is the concentration of reactant A.B is the concentration of reactant B.C is the concentration of reactant C.x, y, and z are the order of the reaction.Based on the data given, the correct rate law of the sample reaction is as follows:
[tex]R = K[A]^2[B]^1[C]^0[/tex]
Read more on rate constant here: brainly.com/question/24749252
A 4.00g sample of helium has a volume of 24.4L at a temperature of 25.0 C and a pressure of 1.00 atm. The volume of the helium is reduced to 10.4L, but the temperature and pressure of the gas are kept constant. What is the new quantity of the gas in moles
Answer:
0.852 mol
Explanation:
First we convert 4.00 g of helium (He) into moles, using its molar mass:
4.00 g ÷ 2 g/mol = 2 mol He
To answer this problem we can use Avogadro's law, which states that at constant pressure and temperature:
V₁n₂=V₂n₁
Where:
V₁ = 24. 4 Ln₂ = ?V₂ = 10.4 Ln₁ = 2 molWe input the data:
24.4 L * n₂ = 10.4 L * 2 molAnd solve for n₂:
n₂ = 0.852 molplease help i have 2 min to complete
Fill in the blanks with the correct word from the word choices:
The ___________ orbits the ____________ which orbits the_______________. Word choices: Sun, Earth, Moon.
Answer:
The Moon orbits the Earth which orbits the Sun.
Explanation:
The temperature at which water vapor condenses into liquid water
dew point
dew point
humidity
humidity
sunshine
sunshine
air pressure
Use the drop-down menus to complete each
phrase describing voltaic cells.
Redox reactions involve a transfer of
Voltaic cells are also known as
cells.
Voltaic cells are composed of two separate
cells.
The physical material where the redox reactions
occur is called the
Answer:
electrons
galvanic
half-
electrode
Explanation:
I got it right :)
The words that complete each of the blanks in the question are;
electronsgalvanichalf-electrodeWhat is a voltaic cell?A voltaic cell is one that produces energy by a sponteanous chemical reaction. A voltaic cell is a type of electrochemical cell.
The following are the words that complete the individual blanks';
electronsgalvanichalf-electrodeLearn more about voltaic cell: https://brainly.com/question/14356798
Water vapor is not usually seen.
Answer:
True
Explanation:
Water vapor is totally invisible.
Without it, there would be no clouds or rain or snow, since all of these require water vapor in order to form. All of the water vapor that evaporates from the surface of the Earth eventually returns as precipitation - rain or snow.
Helped by the One & Only #QUEEN aka #DRIPPQUEENMO
Hoped this helped! :)
What of the following is NOT a common property of metals?
Answer:
have luster i think i dont know
Explanation:i need points
4. From the diagram above, what
would need to be the correct genotype for the two green beetles to have the outcome of generation 2?
a HH x hh
b. Hh x Hh
c. Hhxhh
d. Hh x HH
Name the following base: Ba(OH)2
Answer:
Caustic Base
Explanation:
"Barium hydroxide forms a strong caustic base in aqueous solution. It has many uses, e.g., as a test for sulphides; in pesticides; in the manufacture of alkali and glass. Use of barium hydroxide lime rather than soda lime, high sevoflurane concentration, high absorbent temperature, and fresh absorbent use."
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Hope I Helped, Feel free to ask any questions to clarify :)
Have a great day!
More Love, More Peace, Less Hate.
-Aadi x