Answer:
Hydroelectric pumped storage can be used to eliminate the conditional nature of wind and solar energy. At times of peak production of energy from either solar or wind (during summer and windy days), the excess electrical energy produced can be stored using hydroelectric pumped storage methods. When conditions no longer favour energy production from either wind or solar sources, these stored energy can then be regenerated for use.
Explanation:
Pumped-storage hydroelectricity is a type of hydroelectric energy storage used by electric power systems to store excess electrical power during periods of low demand for later release at periods when demand for energy rises again. It stores energy in the form of gravitational potential energy of water, pumped from a lower level reservoir to a higher level reservoir.
At times of low electrical demand, excess generated energy is used to pump water into the upper reservoir. When there is higher demand, water is released back into the lower reservoir through a turbine, generating electricity.
This form of energy storage is useful in circumventing the conditional nature of renewable energy sources such as wind and solar energy. At times of peak production of energy from either solar or wind (during summer and windy days), the excess electrical energy produced can be stored using hydroelectric pumped storage methods. When conditions no longer favour energy production from either wind or solar sources, these stored energy can then be regenerated for use.
The distance between an oxygen and hydrogen in a water in 95.98.What is the distance in meter nanometer and centimeters
Answer:
9.598 × 10⁻¹¹ m
0.09598 nm
9.598 × 10⁻⁹ cm
Explanation:
Step 1: Given data
Distance between oxygen and hydrogen in water (d): 95.98 pm
Step 2: Convert "d" to meters
We will use the conversion factor 1 m = 10¹² pm.
95.98 pm × 1 m/10¹² pm = 9.598 × 10⁻¹¹ m
Step 3: Convert "d" to nanometers
We will use the conversion factor 1 m = 10⁹ nm.
9.598 × 10⁻¹¹ m × 10⁹ nm/1 m = 0.09598 nm
Step 4: Convert "d" to centimeters
We will use the conversion factor 1 m = 100 cm.
9.598 × 10⁻¹¹ m × 100 cm/1 m = 9.598 × 10⁻⁹ cm
In cellular respiration the energy starts as ____________ energy and ends up as ______________ energy.
Answer: food, chemical
Explanation:
Cellular respiration is a process in which the food or glucose reserve is oxidized so as to produce chemical form of energy in the form of ATP, that is used by the body's cell to perform metabolic activities within the cell. During this process the glucose in the presence of oxygen is converted into water and carbon dioxide and the chemical form of energy so produce is called adenosine triphosphate or ATP. Thus in the end chemical energy is produced.
B. Calculate the Pressure of 20.0 mole of helium in a 10.0 L cylinder at 273 K. [a = 0.0341 atm*L^2/mol^2 ; b = 0.0237L/mol ; R = 0.08205 L*atm/mol*K) *
87.3 atm
46.9 atm
55.5 atm
12 kPa
Answer:
46.9 atm
Explanation:
Applying Van der waals equation
P = [nRT/(V-nb)]- (an²/V²)............... Equation 1
Where P = pressure, T = temperature, n = number of moles, V = volume, R = Universal constant, a and b = gas constant
Given: n = 20 moles, R = 0.08205 L.atm/mol.K, T = 273 K, V = 10.0 L, a = 0.0341 atm.L²/mol², b = 0.0237L/mol
Substitute these values into equation 1
P = [(20×0.08205×273)/(10-20×0.0237)]-(0.0341×20²/10²)
P = (447.993/9.526)-0.1364
P = 47.028-0.1364
P = 46.9 atm
If a chemist dilutes 2L of 0.700M solution to 3 L what will be the new concentration (M)
Answer:
Molarity of our solution= 0.46=0.5
Explanation:
When diluting a solution we can use the formula: 1 1 = 2 2
= M= Molarity of the solution
=V=volumes
On the left side, we'll put what we know/already have and on the right side of the formula we'll put down what we want to dilute it to.
Let's plug in what we already know.
(0.700M)(2L) = (M2)(3L)
Solve for M2 by dividing both sides by 3 so M2 will be by itself.
(0.700M)(2L)/(3L) = M2
M2= 0.46, we can round it up to 0.5
Calcium carbonate + hydrochloric acid forms copper ___ + water + carbon dioxide
What does it form copper what please help me
Answer:
The answer copper carbonate
draw Fischer projection for L-ketononose
Answer: acttachec pic
The last carbon have the H on there, forgot to put it in :)
The Fischer projection of L-ketononose is:
H
|
CH₂OH-C=O-H
|
C
|
CH₂OH
Fischer projection is a two-dimensional representation of a three-dimensional molecule. In Fischer projection, the carbon atoms are drawn as vertical lines, and the hydrogen atoms and hydroxyl groups are drawn on the right-hand side or left-hand side of the carbon atoms. The carbonyl group is always drawn at the top of the Fischer projection.
The L-configuration is a type of configuration that is assigned to organic molecules based on the orientation of the hydroxyl group on the penultimate carbon atom. If the hydroxyl group is on the left-hand side of the Fischer projection, the molecule is assigned the L-configuration. If the hydroxyl group is on the right-hand side of the Fischer projection, the molecule is assigned the D-configuration.
In the Fischer projection of L-ketononose, the hydroxyl group on the penultimate carbon atom is on the left-hand side, so the molecule is assigned the L-configuration.
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what are the mixtures of chemistry
Write a balanced equation for the following:
1. P4 + O2 → P2O5
2. C3H8 + O2 → CO2 + H2O
3. Ca2Si + Cl2 → CaCl2 + SiCl4
(ANS1)— P4 + 5O2 ---> 2P2O5
(ANS2)— C3H8 + 5O2---> 3CO2 + 4H20
(ANS3)— Ca2Si + 4Cl2 ---> 2CaCl2 + SiCl4
Answer:
(ANS1)— P4 + 5O2 ---> 2P2O5
(ANS2)— C3H8 + 5O2---> 3CO2 + 4H20
(ANS3)— Ca2Si + 4Cl2 ---> 2CaCl2 + SiCl4
Explanation:
which metal is the most easily oxidized?
A. highly active metal
B. moderately active metal
C.slightly active metal
D.an inactive metal
Answer:
B. Moderately active metal
Explanation:
Why do people who exercise more produce more carbon dioxide ?
Answer:
When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide.
Explanation:
Because your muscles are working harder when you exercise, your body requires more oxygen and produces more carbon dioxide.
What is exercise?Exercise is characterized as a physiological movement that maintains or enhances total physical wellness. People who exercise are less likely to get diseases and to maintain a healthy weight. Type 2 diabetes, heart disease, high blood pressure, and weight gain can all be warded off with regular exercise. Leaping, jogging, or lifting weights are examples of exercises that can support bone health.
The lungs both provide the body with oxygen, which gives you energy, and remove carbon dioxide from the system, which is a byproduct of energy production. The heart pumps oxygen-rich blood to the working muscles. Because your muscles are working harder when you exercise, your body requires more oxygen and produces more carbon dioxide.
Thus, because your muscles are working harder when you exercise, your body requires more oxygen and produces more carbon dioxide.
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Which of the following groups of chemical elements would you expect to
be most alike in their physical and chemical properties?
A. Chromium, rhodium, zinc, silicon
B. Magnesium, strontium, radium, barium
C. Lithium, beryllium, boron, oxygen
D. Sulfur, selenium, chlorine, krypton
Answer: B. Magnesium, strontium, radium, barium
Explanation:
Elements are distributed in groups and periods in a periodic table.
Elements that belong to same groups will show similar chemical properties because they have same number of valence electrons.
Magnesium (Mg) , Strontium (Sr) , Radium (Ra) and Barium (Ba) are elements which belong to Group 2. They have 12, 38, 88 and 56 electrons respectively and contain 2 valence electrons each and need one electron to complete their octet.
The chemical reactivity of elements is governed by the valence electrons present in the element and thus they are alike in physical and chemical properties.
What type of plate boundary is
shown in the diagram below?
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Hiiii- Are you asking what the element of Hu is???
If so- it's Hundium.
...
If this was just a random keyboard spam of a question, then Huuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu to you too
PLEASE HELP ME OUT. I AM REALLY LOST AND I JUST NEED THIS LAST QUESTION I WILL BE GRATEFUL AND WILL GIVE BRANLIEST!
PLEASE HELP ME OUT. I AM REALLY LOST AND I JUST NEED THIS LAST QUESTION I WILL BE GRATEFUL AND WILL GIVE BRANLIEST!
Explanation:
—COOH and —NH₂
Carboxylic Acid and Amino group
-TheUnknownScientist
How many moles of helium are inside a 7.3 L party balloon at STP?
Answer:
0.326 mol. is the answer.
Explanation:
No. of moles = Volume (L) / Volume at STP
N = 7.3 / 22.4
N = 0.326 moles
What is the best common way to convert fossil fuels into energy?
a. oxidation
b. reaction
c. combustion
d. neutralization
PLEASE HELL ASAP WILL GIVE BRAINLEAST TI CORRECT ANSWER
Answer:
Rabbbits are scared so if there is an increase in the snake population they would try and hide and run from it bur hawks also prey on rabbits but not every hawk so Im going with bthe snake answer .
Explanation:
I have a question for us gals, is it hard for all of you when you try to get your crushes attention and he/she just keeps ignoring you to the point where you could just give up?
Answer:
Yes it is hard. For some of us. I already gave up, but now hes coming back. Id say sometimes its useless to get his attention if he never even pays attention to you anyways. It sucks because its so hard to get then to notice you for once.
Explanation:
What am I? 2. I have 7 valence electrons and have 2 more protons than "phosphorus. What am I? 3. I am in Period 5 and have properties similar to my favorite cousin, gold. What am I? 4. I am the only element with no neutrons in my nucleus. What am I? 5. I am the only element in Period 3 that has 8 electrons in my outermost energy level. What am I? 6. I am the most massive element on the Periodic Table to have electrons in only one energy level. What am I? 7 I have the smallest atomic number of all the elements that have electrons in three different energy levels? What am I?
Answer:
2. chlorine
3. Copper??
4. Isotope
5. sodium, magnesium, aluminum, silicon, phosphorus, sulfur, or argon
6. Oganesson
7. Hydrogen
Hope these are right!
How many molecules are in 8.78 moles of oxygen gas
Answer:
11 g
Explanation:
What volume of a 40.0 % by volume acetone solution can be
made with 20.0 mL of acetone?
Answer:
50 milliliters of acetone solution
Explanation:
If a solution is 40% by volume of acetone, then we have 40 mL of acetone in a 100 mL solution. So if we have 20 mL of acetone, we get: 100 mL solution 40 mL ( CH3) 2CO⋅
20mL (CH3) 2CO =50mL solution
The volume percent of 40% indicates that 40 ml of acetone is present in 100 ml solution. Then, 20 ml acetone can be made into 50 ml solution.
What is volume percentage ?Volume percentage is a common term used to express the concentration of a solution. Volume percentage of a solution is the ratio of the volume of the solute to the volume of the solvent multiplied by 100.
The volume percentage of the solution measures how much volume of the solute is present in 100 ml of the solution. Thus a 50% by volume solution is 50 ml solute in 100 ml solution.
Given that volume percentage of acetone = 40%.
that is 40 ml of acetone is present in 100 ml of the solution.
Therefore, the volume of the solution containing 20 ml of acetone is :
(20 × 100)/40 = 50 ml.
Therefore, 50 ml of 40% by volume o solution can be made by 20 ml of acetone.
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An ionic compound has sodium ions bonded to an oxygen ion. What is the compound's name?
In a _____ molecules move just enough to stay close together but not to stick
Answer:
I think it might be liquid
Answer: in a molecular molecules move just enough to stay close together but not to stick
Explanation:
what element has the same amount of valence electrons as neon?
-KDM
Answer:
Sulfur has the same amount, like all the other elements in group 16, has six valence electrons.
Explanation:
Answer:
give me the question and I can help you
please help :(.
Which is true about scientific theories?
Answer:
b
Explanation:
i think its b because theories are usually developed after many experiments/tests by different scientists. at least i think so lol i dont remember too much from biology
The process of an element breaking down over time, allowing geologists to get the absolute age is called _________.
Answer:
radioactive decay
Explanation:
If the hydroxide concentration of a solution is
[OH-] = 4.67 X 10-8
what would the pH of that solution be?
Answer:
ty
Explanation:
yt
1)
Two locations, one in northern Canada and one in the southwestern United States, receive
the same amount of precipitation each year. The location in Canada is classified as a humid
climate. Why would the location in the United States be classified as an arid climate?
A)
The soil-moisture storage in the southwestern United States is more than that in northern
Canada.
B)
The vegetation of the southwestern United States is different from that of northern
Canada,
C)
The potential evapotranspiration is greater in the southwestern United States than in
northern Canada
D)
The yearly distribution of precipitation is different.
Can someone please explain what to do it’s late at night and I need sleep but I forgot I had this homework please help me with a few questions I’m desperate :(
Answer:
1) it takes 13 second
2) 2100 miles
3) 40 miles / hours
4) 730 meters
Matches=from Chemical energy to light energy+heat energy
Explanation:
A matchstick has a lot of chemical energy stored in it. When the match is struck, it burns and the chemical energy in it produces heat energy and light energy.
brainliest and follow and thanks
