Answer:
I think the answer is probably b
2. What is one effect of convection currents in the mantle?
A. forming deep-water currents in oceans B. cooling the rocks of the crust
C. providing energy to drive the water cycle
D. transferring heat from Earth's interior to the crust
Answer:
D no. is the answer of your question
Oxidation-reduction (redox) reactions are reactions:______
a) in which oxidation numbers change.
b) Oxidation numbers are either real charges or formal charges which help chemists keep track of electron transfer.
c) In practice, oxidation numbers are best viewed as a bookkeeping device.
d) Oxidation cannot occur without reduction.
e) In a redox reaction the substance which is oxidized contains atoms which increase in oxidation number.
f) Oxidation is associated with electron loss (helpful mnemonic: LEO
Answer:
A. in which oxidation numbers change
Explanation:
This is because in oxidation reduction reactions or redox reactions, involves the sharing or transfer of electrons between species and the oxidation numbers changes. There is change in electrons, ions or oxidation number by gaining or lossing electrons. Increase in oxidation number is an indication of oxidation while decrease in oxidation indicate reduction.
GUYS PLEASE HELP ME I BEG YOU
Answer:
an object is a rest upon a table
Help pleaseee!!!Please explain how evaporation condensation and precipitation are involved in the water cycle
Answer: The water cycle shows the continuous movement of water within the Earth and atmosphere. ... Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).
Explanation:
Answer:
water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
Explanation:
evaporation, condensation, precipitation, and collection. condensation: this is when water vapor in the air cools down and turns back into liquid water. precipitation: this is when water (in the form of rain, snow, hail, or sleet) falls from clouds in the sky.
good luck :)
hopefully, this helps
have a great day !!
What is decarboxylation??
Gimme one reaction of it..
Answer:
Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO2). Usually, decarboxylation refers to a reaction of carboxylic acids, removing a carbon atom from a carbon chain.
Explanation:
Please give me brainlist
Which of these is not a Decomposer? *
A. Fungi
B. Bacteria
C. Flowers
D. Worms
What are the the basic cloud types?
Answer:
they are 10 but I'll be listing three
Explanation:
cirrus,cirrocumulus and cirrostratus
I hope this helps....good luck with the rest...again, I hope this helps
what type of energy is a furnace and using a telephone? pls help
Answer:
hope this helped
Explanation:
Radiant energy is created through electromagnetic waves and was discovered in 1885 by Sir William Crookes. Fields in which this terminology is most often used are telecommunications, heating, radiometry, lighting, and in terms of energy created from the sun.
Answer:
radiation energy is created through electromagneic waves and was discovered in 1885 by Sir William Crookes
Explanation:
PLEASE HELP!!!
a person measures the mass of a 10cm3 rock to be 15g. what is the density of the rock
Answer:
[tex]d=1.5\ g/cm^3[/tex]
Explanation:
Given that,
The mass of the rock, m = 15 g
The volume of the rock, V = 10 cm³
We need to find the density of the rock. The density of an object is equal to the mass per unit volume such that,
[tex]d=\dfrac{m}{V}\\\\d=\dfrac{15\ g}{10\ cm^3}\\\\d=1.5\ g/cm^3[/tex]
So, the density of the rock is equal to [tex]1.5\ g/cm^3[/tex].
A force of 10 N pulls an object to the right, and a force of 7 N pulls to the left, what is the net force
Answer:
2 N
Explanation:
when comparing ethanol and acetic acid, which one has the most polar bond? and what is that bond?
Answer:
Ethanol is another alcohol, and since there are less carbons in its chain, it will be more polar. So Ethanol is the most polar bond, it has two different types of bonding between its constituent atoms. The bonds between the hydrogen and carbon atoms are nonpolar covalent bonds. The hydrogen-oxygen and carbon-oxygen bonds are polar covalent bonds.
Explanation:
1) How many molecules are in 0.02 moles of beryllium iodide?
Answer:
3 grams??
Explanation:
I think this would be the answer you are looking for.
Pb(NO3)+MgI2=Mg(NO3)+PbI2 what type of reaction?
Pb(NO3) + MgI2 = Mg(NO3) + PbI2 is an example of a double-replacement reaction.
Is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the right side of the equation
Answer:
No
Explanation:
No, but the total mass of reactants must equal the total mass of products to be a balanced equation.
Example: Consider the following reaction ...
3H₂ + N₂ => 2NH₃ and 'amu' is atomic mass units (formula weights from periodic table)
In terms of molecules, there are 4 molecules on the left (3 molecular hydrogens (H₂) and 1 molecular nitrogen (N₂) and 2 molecules of ammonia on the right side of equation arrow. ∑reactant molecules ≠ ∑product molecules.
In terms of mass of reactants & mass of products, the 3H₂ + N₂ => 6amu + 28amu = 34amu & mass of products (2NH₃) => 2(14amu) + 6(1amu) = 34amu for sum of product masses.
∑mass reactants = ∑mass products <=> 34amu = 34amu.
The expression '∑mass reactants = ∑mass products' as applied to chemical equations is generally known as 'The Law of Mass Balance'.
The energy we get from the sun is called THERMAL ENERGY and the energy from the Earth is called SOLAR RADIATION.
True
or
False
Using Graham's Law of Effusion, calculate
the approximate time it would take for
1.0 L of argon gas to effuse, if 1.0 L of
oxygen gas took 12.7 minutes to effuse
through the same opening.
0.070 minutes
0.89 minutes
None of the other answers
14 minutes
12 minutes
The rate of effusion of Argon here is 8.03 min
Data;
Molar mass of Oxygen = 16g/molTime for effusion of oxygen = 12.7 minMolar mass of Argon = 40g/molTime for effusion of Argon = ?Graham's Law of EffusionThis law states that the rate of effusion of a gas is inversely proportional to the square root of it's molar mass.
[tex]R \alpha \frac{1}{\sqrt{M} }[/tex]
From this,
[tex]\frac{r_1}{r_2} = \frac{\sqrt{M_2} }{M_1}[/tex]
substituting the values and solving,
[tex]\frac{R_A_r}{12.7}= \frac{\sqrt{16} }{\sqrt{40} } \\ R_A_r = \frac{12.7*\sqrt{16} }{\sqrt{40} } \\R_A_r = 8.032min[/tex]
The rate of effusion of Argon here is 8.03 min
Learn more on Graham's law of effusion here;
https://brainly.com/question/12211278
If I began this reaction with 1.7g of O2 , how much water would I make
Which of the following is a characteristic of a scientific theory? A.it explains how nature works. B.it is based on a single experiment. C.it should not be possible to replicate it's results. D.it should not be possible to replicate it's observations.
Answer:
A. It explains how nature works.
Explanation:
A scientific theory is an explanation, based on a body of evidence, of how something works or will behave.
The other three answers contradict scientific theory. Theories should be based on many experiments, and you should be able to replicate the results and observations.
help plz and will give brainly
A cell biologist measures the volume of a bacteria cell. The volume is 6.027x10-10 L. What is the volume in picoliters? Write your answer as a decimal.
pL
Answer:
Volume of bacteria cell into Pico liters = 60.27 Pico liters
Explanation:
Given:
Volume of bacteria cell = 6.027 x 10⁻¹⁰ L
Find:
Volume of bacteria cell into Pico liters
Computation:
1 L = 10¹² Pico liters
So,
Volume of bacteria cell = 6.027 x 10⁻¹⁰ L
Volume of bacteria cell = 6.027 x 10⁻¹⁰ x 10¹² Pico liters
Volume of bacteria cell into Pico liters = 60.27 Pico liters
How much does the Earth weigh?
5.972 × 10^24 kg
hope it helps
Answer:
5.972 × 10^24 kg
hope this helps
pond water with microscopic organisms inside mixture or pure substance
Answer:
it's mixture
Explanation:
since pond is composed of not only microbes and also more aqatic animals so I think pond become mixture but not pure substance am I right or not...
Do you think humans are responsible for global warming trends? Why or why not?
Answer:
Yes. At least some. There has been ups and downs in temperature ever since the Earth was created, and this is just another up in temperature. I do think that humans have made it worse though, with all of the greenhouse gases and things like that.
"A 4.75-kg cell phone is dropped from your second floor balcony (from rest). It hits the
ground at a speed of 40 m/s. Assuming air resistance can be ignored, calculate the
gravitational potential energy of the cell phone before it was dropped."
hi, if your looking for extra points (50+) and br ainiest here is ur chance, answer this question correctly plz
Answer:
it should be C. the filtering of ground water. have a good day!
[Kr]5s24d25p1
Express your answer as a chemical symbol.
Answer:
kr(5)s24d25p1
=5d25kprs24
Which best describes the process that occurs when liquid water becomes
ice?
Answer:
Freezing
Explanation:
When a liquid goes to a solid, this process is called freezing.
Answer:
The water molecules get condensed and form a solid matter called ice. This process is called Condensation.
Sulfur
how many electron shells in 4th shell?
Answer:
16 electrons in a sulfur atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and six in shell three.
Explanation:
Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 18.0 atm. If the gas expands against a constant external pressure of 1.00 atm to a final volume of 10.0 L, what is the work done?
Now calculate the work done if this process is carried out in two steps.
1. First, let the gas expand against a constant external pressure of 5.00 atm to a volume of 2.00 L.
2. From there, let the gas expand to 10.0 L against a constant external pressure of 1.00 atm.
Answer:
A=-0.9117kJ.
B= -0.5065kJ
C=-0.8104KJ
Explanation: A s gas expands, it produces works . Therefore
Work done by gas expansion,
W = P Δ V
where P =external pressure,
ΔV = change in volume (final - Initial)
W = -1 atm (10 - 1 ) L
W = -9L. atm x 101.3J/ 1L. atm
W = 911.7Joules ≈ -0.9117kJ.
1.The work done in the first step is:
W= - 5.00 atm × (2.00 L - 1.00 L) = -5 atm·L ×(101.3J / 1 atm·L)
=506.5J = -0.5065kJ
2.The work done in the second step is:
w = - 1.00 atm × (10.0 L - 2.00 L) = -8atm·L ×(101.3J / 1 atm·L
=810.4J
w=-0.8104KJ
The work done in the whole process is:
w =-0.5065kJ --0.8104KJ = -1.3169KJ
The only three colors of light the human eye can detect are red, green, and blue.
O True
O False