Answer:
1.50x10^21 molecules O2
Explanation:
Most chemical reactions have what
Answer:
The first one
Explanation:
Hope it helps
Answer:
I think it would be: have starting substances that collide with each other
Explanation:
Two or more reactants interact to create different substances called products.
What is a responding variable
Answer:
A manipulated variable is also called an independent variable. A responding variable is a variable that the researcher predicts will change if the manipulated variable changes. A responding variable is also called a dependent variable.
What is the mass of 7.5 x 10^24 molecules of NaCl?
Answer:
Molar mass of NaCl = 58.44277 g/mol
This compound is also known as Sodium Chloride.
Convert grams NaCl to moles or moles NaCl to grams
Molecular weight calculation:
22.98977 + 35.453
Explanation:
Why does heating an object increases its thermal energy?
Answer:
the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.
What’s Neon family number? And period?
Answer:
18 and Period 2
Explanation:
Neon (Ne), chemical element, inert gas of Group 18
Neons period on the periodic table is period 2.
Home can use ____to distribute warm air from a sunroom
Answer:
Solarpannels? I honestly don't know I'm just trying to be helpful.
You probably use the term heat many times a day. As an example, when you cook dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun’s energy. Why is heat the correct term to use in these examples?
A. They show that when objects are touching, they are the same temperature.
B. They show that heat flows from something warmer to something cooler.
C. They indicate that heat is created to raise the temperature of something.
D. They indicate that the kinetic energy of the particles decreases when something is heated.
Answer:
c
Explanation:
23. Which element is most likely to be malleable?
a. Bromine b. Radon c. Nickel d. Carbon
Cellular respiration occurs mostly in plants nucleus. True or false
Answer: true
Explanation:
What characterizes a system at equilibrium?
O A. The system is changing at an even rate.
B. The system has stopped changing.
O C. The system cannot undergo change.
D. There is no net change to the system.
Answer:
D. There is no net change to the system
Explanation:
Equilibrium means "equal". In a chemical system, changes occur in substances called the reactants to produce another substance called the products. These changes from reactants to products and vice versa occur at an uneven rate until EQUILIBRIUM is reached.
In other words, equilibrium is attained when the reactants and products are formed at an equal or constant rate i.e. There is no net change to the system. For example, in the chemical system below:
A + B ⇌ C + D
This system is said to be at "EQUILIBRIUM" if the rate of reaction of the reactants (A and B) is equal to that of the products (C and D). That is, there is no net change (difference) in the reaction rate.
Why do waves move faster at higher temperatures and in a solid phase?
There is more energy and the particles are farther apart.
There is less energy and the particles are closer together.
There is less energy and the particles are farther apart.
There is more energy and the particles are closer together.
Answer:
Higher temperatures means more energy, and a solid phase means the particles are close together. This results in highly energized particles that bump into the particles close to them, who in turn bump into more particles.
Explanation:
waves move faster at higher temperatures and in a solid phase there is more energy and the particles are farther apart there is less energy and the particles are closer together there is less energy and the particles are farther apart there is more energy and the particles are closer together.
The waves move faster at higher temperatures and in a solid phase because there is more energy and the particles are closer together.
What is wave?A wave can be described as a medium which transports energy without causing net particle movement. Elastic deformation, pressure change, electric along with magnetic intensity, electric potential, or temperature can all be examples.
What is energy?The quantitative property that's also transferred to a body or a physical system, recognizable in the work performance as well as in the form of heat and light, is called energy.
What is temperature?Temperature is the measurement of a body's degree of hotness or coolness.
The faster the wave is conveyed, the greater the particle interactions are. In general, sound travels quicker through solids than through liquids, and faster through liquids than through gas. Because warmer particles move at a higher pace, the temperature actually speeds up to sound.
Therefore, the correct answer will be option (d).
To more about wave and energy .
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How is the Periodic Table helpful to scientists?
Answer:
Because it helps predict the types of chemical reactions that a particular element is likely to participate in by telling each element's atomic number and usually its atomic weight
Explanation:
A car accelerates from 20 m/s to 40 m/s in 4 seconds. What is the car’s acceleration?
Answer:
40 - 20 = 20
20/4 = 5m/s
The difference in velocity divided by the rate = acceleration.
In the ATP cycle, a phosphate group is cut off of
A. ATP to form ADP, absorbing energy.
B. ATP to form ADP, releasing energy.
C. ADP to form ATP, absorbing energy.
D. ADP to form ATP, releasing energy.
Answer:
B) ATP to form ADP, releasing energy.
march 10
march 3
february 16
february 22
your answer will be March 3
Someone help please!
Answer:
D
Explanation:
GUYS QUICK HELP!
is a soda pop bottle a invention or an innovation?
Answer:
Invention
Explanation:
!Hope This Helps!
How many moles are there in 17.6g NaOH?
Answer:
The answer is 39.99711. We assume you are converting between grams NaOH and mole. You can view more details on each measurement unit: molecular weight of NaOH or mol This compound is also known as Sodium Hydroxide.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.44moles are there in 17.6g NaOH.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.
Mathematically,
number of moles of NaOH =given mass of NaOH÷ molar mass of NaOH
Molar mass of 1 mole of NaOH= 40 g/mol
mass of NaOH= 17.6g
Substituting all the given values in the above equation, we get
number of moles of NaOH = 17.6g ÷ 40 g/mol
number of moles of NaOH =0.44moles
Therefore, 0.44moles are there in 17.6g NaOH.
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9. Scientists are studying cellular respiration in a jungle ecosystem that has plants,
animals, and decomposers (which consume dead things). Which group or groups of
organisms in the jungle carry out cellular respiration?
plants
animals and decomposers
all organisms in the jungle
animals.
Answer:
all organisms in the jungle
Explanation:
Scientists are studying cellular respiration in a jungle ecosystem that has plants, animals and decomposers, so all organisms in the jungle carry out cellular respiration.
What is cellular respiration?Cellular respiration is a process in which organism use the oxygen molecule for the conversion of their food materials to get the chemical energy by the product of water and carbon dioxide.
This respiration process is done by all living organism like plants, animals, insects, bacteria, etc. to get energy for the other cellular functions. So, in the ecosystem of jungle plants, animals and decomposers all will perform cellular respiration.
Hence, option (c) is correct i.e. all organisms in the jungle.
To know more about cellular respiration, visit the below link:
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3
Question 6 (2 points)
An increase in the level of carbon dioxide in the atmosphere would result in:
Answer:
Air pollution
Explanation:
Carbon(IV)oxide is sometimes harmful to man but good for plant in other to manufacture their food
What does c represent in the carbon cycle diagram?
Answer:
carbon
Explanation:
I'm pretty sure if not
Answer:
The adjacent diagram shows the carbon cycle with the mass of carbon, in gigatons of carbon (Gt C), in each sink and for each process, if known. The amount of carbon being exchanged in each process determines whether the specific sink is growing or shrinking.
When iron (iii) oxide, Fe2O3, and aluminum are heated together at a high temperature, iron (Fe) and aluminum oxide (Al2O3) is formed
1.What is the meaning of the symbol (iii) in iron (iii) oxide?
2.Write a balanced equation for this reaction
If you roll a bowling ball and a marble at the same
speed, which one has more Kinetic Energy?
Answer:
The marble
Explanation:
Even though they both have kinetic energy, the marble has more since the weight of the bowling ball is heavier, leaving it to stop faster than the marble itself.
What other substance (besides salt) could you sprinkle over ice to affect how fast it melts? Describe how you would test the substance's impact on the melting time of ice. Predict the results of such a test.
Answer:
See explanation
Explanation:
Salt makes ice to melt faster than it usual. Sugar is another substance that influences the melting time of ice.
If i have a sample of pure ice and another sample of ice treated with sugar. I have to maintain the both initially at 0 degrees temperature and have a stop clock to measure the melting time.
I will ultimately notice that the sample of ice treated with sugar will melt faster than the pure sample of ice due to the presence of an impurity.
What is the formula for potassium nitrate? (3 points) a KN b K3N c KNO2 d KNO3
Answer:
KNO3 (Potassium Nitrate)
Explanation:
I just know.
Between the two elements Neon (Ne) and Silicon (Si) which is more stable explain your reasoning?
Answer:
Neon is a gas and silicon is a solid i solved this for my chemistry teacher dr Thomas project this week
Explanation:
gasses are naturally less stable then non metalloids
2. The air pressure inside a submarine is 0.56 atm. What would be the pressure in
mmHg?
What causes warm air to rise?
a. The fact that it's less dense than cold air.
b. The fact that it weighs more than cold air.
c. The fact that it has higher pressure than cold air.
d. The fact that it's more dense than cold air.
what happens when u mix blood and water
Answer:
Blood and water
Explanation:
Hello can someone pls help me with this question! (Please explain why)
QUESTION: How is an increase in surface area achieved?
A. increasing the size of the reactant particles
B. decreasing the size of the reactant particles
Answer:
letter A.
Explanation:
the rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. this is done by cutting the substance into small pieces, or by grinding it into a powder.if the surface area of a reactant is inceased: more particles are exposed to the other reactant.
HOPE IT HELPS(◍•ᴗ•◍)❤