Answer:
These are the CHNOPS elements; the letters stand for the chemical abbreviations of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur.
Explanation:
Answer:
Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur.
Hope this helps!
Plants carry out photosynthesis to make sugar from carbon dioxide and water.
True or false?
Answer:
la re spuesta en verdadero
Answer:
True
Explanation:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
Atomic number of Sodium?
Answer:
11
Explanation:
Answer:
Atomic number of sodium is 11.
Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.
6. What happens to the energy of the transition state when a catalyst is used?
A. The energy increases.
B. The energy decreases.
C. The energy does not change.
D. The energy varies during the catalyzed reaction.
please please help. Its my only try
Answer:
D I think the answer is D for this question
Answer:
is the B
Explanation:
The point of highest energy (point of the activated complex) represents the transition state. With a catalyst, the energy required for the reaction to enter the decay state, therefore, the energy required to start the reaction also decreases.
Construct an explanation using Newton's Laws of Motion to describe the effects of balanced and unbalanced forces
on the motion of an object.
Answer:
newton's 3 laws state:
- an object in motion stays in motion (unless an external force acts on it)
- every action has an opposite but equal reaction
- force= mass x acceleration
What is true about the particles in a substance? Select all that apply.
Particles in all states of matter are arranged close
together.
Heating a substance can cause the substance to
change state.
The way particles move changes when the
substance's thermal energy changes.
Particles in all states of matter are constantly
moving.
Submit
Answer:
Heating a substance can cause the substance to change state
The way particles move changes when the substance's thermal energy changes.
Particles in all states of matter are constantly
moving.
Those are all correct and apply to water in all three phases
A Write a set of four quantum numbers possible for the circled electron in arsenic (As). (There could be more
than one correct answer.) (4 points)
The required quantum numbers are;
n = 4l = 1ml = 0ms = 1/2What is quantum number?The term quantum number is used to describe the position of an electron in an atom. Now we know that each electron in atom is defined by four sets of quantum numbers.
Now;
For the circled electron in the arsenic atom, the four quantum numbers are;
n = 4l = 1ml = 0ms = 1/2Learn more about quantum numbers:https://brainly.com/question/16979660
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Please answer both 7 and 8
How is Earth’s outer layer different from a cracked hard-boiled egg?
Differences Between Eating Clean to Prevent a Heart Attack and Keeping Drains Clean to Prevent Clogged Pipes
Answer:
the only difference i could find is that if your eating, your alive and if your a drain than your not.
Explanation:
Elements that do not have full outer electron shells will donate, share, or take from other atoms. Choose the items that have the correct binary ionic formula. (brainliest)
Answer:
Ok...
Answer: YTH/JYG
Explanation:
AI+ZN+H=YTH
Answer:Potassium and sulfur form KS2
Sodium and calcium form Na2Ca
Beryllium and nitrogen form Be3N2
Explanation:
i took the quiz
If you have 23 g of Lithium oxide, what is the volume of Oxygen that is produced? _____ Li2O2 + _____ H2O _____ LiOH + _____ O2
Answer:
1st step : find the number of moles for the known substance
number of moles =mass/ relative molecular mass
n=23/Li2O2
n=23/(14+32)
n =23/46
n= 0,5moles
2nd step : balance the equation
2Li202 +2H20-----> 4LiOH +O2
3rd step : find the mole ratio of the known or stated using the balanced equation
Li2O2 : O2
2 : 1
4th step :find the number of moles for the asked using the mole ratio using simple proportion
Li2O2 :O2
2 :1
0,5 :???
0,5/2 ×1
= 0,25moles for (O2)
5th step : find the asked either mass , volume , concentration
number of moles = volume/molar gas volume
volume = number of moles × molar gas volume
v = 0,25moles × 28dm^3
v= 7 dm^3 of (O2)
What are valance electrons used for?
Answer:
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
Please help me ..If you don't have a question or something to say just comment don't steal my points . It's not fair. Here are the questions:
1.
[tex]1.20 \: mol \times \frac{6.02 \times {10}^{23} }{1 \: mol} = 7.224 \times {10}^{23} atoms[/tex]
2.
[tex]9.25 \times {10}^{25 \:} molecules \times \frac{1 \: mol}{6.02 \times {10}^{23} } [/tex]
[tex] = 153.654485 \: moles[/tex]
3.
molar mass = 3(24.31) + 127.60 + 5(32.07)
molar mass = 360.88 g
4.
molar mass = 3(58.93) + 2(30.97) + 8(16.00)
molar mass = 366.73 g
5.
molar mass = 98.09
[tex]125 \: g \times \frac{1 \: mol}{98.09 \: g} = 1.274339892 \: moles[/tex]
//
I'm too lazy to do the rest but you should get a general idea of how to do it.
Also, round as you wish!
Ayo, thanks for my points
Some farmers of vegetables and fruits from flowering plants pay beekeepers to bring their beehives to their land each year. Why is this?
1. Flowering plants rely on pollinators to survive.
2. Flowering plants depend on bees for self-pollination.
3. Bees help protect their crops.
4. Bees eat the sweet nectar of the fruits that grow.
Answer:
option 2nd is correct answer of this question
Some farmers of vegetables and fruits from flowering plants pay beekeepers to bring their beehives to their land each year because flowering plants depend on bees for self-pollination. Therefore, option 2 is correct.
What is self pollination ?Self pollination is the transfer of pollen grains from the anther of a flower to the stigma of the same flower in the same plant or to a different plant that is genetically similar.
Many crops, but not all, self-pollinate. Beans, broccoli, cabbage, carrots, cauliflower, corn, kohlrabi, onions, and peppers are examples. Apples, cherries, peaches, and pears are among the fruit trees that self-pollinate.
Because flowering plants rely on bees for self-pollination, some farmers of vegetables and fruits from flowering plants pay beekeepers to bring their beehives to their land each year.
Thus, option 2 is correct.
To learn more about the self pollination, follow the link;
https://brainly.com/question/28300865
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how could you check that when the calcium carbonate is reacting with hydrochloric acid the gas given off is carbon dioxide
Answer:
CaCO3 + 2 HCl => CaCl2 + CO2 + H2O
Explanation:
CO2 will burst out when the reaction occurs in water, and the ions will be dissociated: Ca(2+) + 2 Cl (-)
How many molecules are in 71.3 moles of H2O
When you add something to water to decrease The freezing point what is this called?
(I’ll mark you as brainlister)
Is Be(OH)2 a strong base pleaseeeee I am in hurry I need some one to help me pleassssseeeee
What is the solute and solvent in a solution of salt water?
Select one:
a.Water is the solvent; Salt is the solute
b.Water is the solvent; Salt is the solvent
c.Water is the solute; Salt is the solute
d.Water is the solute; Salt is the solvent
Answer:
A
Explanation:
solute- thing being disolved
solvent- thing doing the disolving
so water is a solvent and salt is solute.
which is A
if my answer helps please mark as brainliest.
In the solution of salt and water, Water is the solvent; Salt is the solute. That is option A.
What is a solute and a solvent?A solute is defined as the part of a solution that is being dissolved by the solvent. A typical example of solute is base and salts.
A solvent is defined as the dissolving part of a solution which is usually liquid in form. A typical example is water.
Therefore, the solute and solvent of a solution would be salt and water respectively. That is option A.
Learn more about solvent here:
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The temperature inside my refrigerator is about 4° Celsius. If I place a
balloon in my fridge that initially has a temperature of 22° C and a volume
of 0.5 liters, what will be the volume of the balloon when it is fully cooled
by my refrigerator?
Answer:
The volume will be 0.47 L
The answer is the volume of the balloon when it is fully cooled by the refrigerator is 0.47 L
What is Charles Law ?If the pressure remains constant , Volume is directly proportional to temperature
[tex]\dfrac{V^{1} }{T^{1} } = \dfrac{V }{T }[/tex]
The data given in the question ,
When Solving Gas Law Problems , we need to convert degree Celsius to Kelvin.
kelvin = degree Celsius + 273.15
T2 (final temperature) in Kelvin = 4 + 273.15 = 277.15K
T1 (initial temperature) in Kelvin = 22 + 273.15 = 295.15 K
V1 (initital volume) = 0.5 L
V2 (final volume) = unknown ?
[tex]\dfrac{V^{1} }{277.15 } = \dfrac{0.5 }{295.15}\\\\V^{1} \;\;\; \;\;\;= \dfrac{0.5\times 277.15}{295.1 5} \\\\V^{1} \;\;\; \;\;\;= \;0.47\; litres[/tex]
Thus , the volume of the balloon when it is fully cooled by the refrigerator is 0.47 litres.
To know more about Charles Law
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what's the FM of chlorine
Answer:
The system can operate on a set level of parts per million (ppm) chlorine, where the set level is automatically maintained.
Energy is absorbed when a material ________ and is released when a material _______.
A. evaporates, melts
B. freezes, melts
C. melts, freezes
D. freezes, condenses
What is isostatic rebound in simple words?
Explanation:
Isostatic rebound (also called continental rebound, post-glacial rebound or isostatic adjustment) is the rise of land masses that were depressed by the huge weight of ice sheets..
Why might changes in the Arctic affect the climate across the globe?
Answer:
Melting ice speeds up climate change.
Explanation:
The Arctic helps to regulate the world's temperature, so as more Arctic ice melts the warmer our world becomes.
HELP ME THE WHOLE PAGE !!!! Someone help please
Answer:
In the image below
Explanation:
Hope this helps you :)
Converts 50° to K
Steps pls
Answer:
50 degrees C I am going to assume
0 degrees C is 273.15 K so 50 plus 273.15 is 323.15K
Explanation:
A student has a balloon with a volume of 2.5 liters at a temperature of 20°C. As the
day warms up to 40°C the student notices their balloon changing size. What is the
new volume of the student's balloon?
approximately 3 liter
because when we round of 2.67it will be 3
Cylinder is filled to 41.5 mL level is 47.6mL
2. How old are the oldest fossils? Oldest rocks?During what period were these found?
IT
Answer:
Fossils: 3.5 billion. Rocks: 4.28 billion
they were found during Haden Eon
Explanation:
Can somebody plz help answer these questions correctly thanks!!! :D (doesn’t have to be long) :3
WILL MARK BRAINLIEST WHOEVER ANSWERS THIS FIRST :DD
wind power is:- Wind power or wind energy is the use of wind to provide mechanical power through wind turbines to turn electric generators for electrical power. Wind power is a popular sustainable, renewable source of power that has a much smaller impact on the environment compared to burning fossil fuels
it's work :-Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity.
Disadvantages:-
The wind is inconsistent. ...
Wind turbines involve high upfront capital investment. ...
Wind turbines have a visual impact. ...
May reduce the local bird population. ...
Wind turbines are prone to noise disturbances. ...
Installation can take up a significant portion of land. ...
Wind turbines can be a safety hazard
Advantages:-
Wind power is cost-effective. ...
Wind creates jobs. ...
Wind enables U.S. industry growth and U.S. competitiveness. ...
It's a clean fuel source. ...
Wind is a domestic source of energy. ...
It's sustainable. ...
Wind turbines can be built on existing farms or ranches.