Answer:
A
Explanation:
Says it on the side of meh screen :P
(Ez question in lol)
A nucleus emits an alpha particle. What happens to the mass
number and the atomic number of that nucleus?
Answer:
the mass number decreases by 4 and the atomic number decreases by 2
What are two ways that convection currents in the oceans distribute the Sun's energy? A. Icebergs are carried from the poles to the equator. B. Warm water is carried from the equator to the poles. C. Living things swim in cool and warm parts of the ocean. D. Nutrient-rich water is brought to the ocean surface
Answer:c
Explanation:
No cap
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:
GUYS QUICK HELP!
is a soda pop bottle a invention or an innovation?
Answer:
Invention
Explanation:
!Hope This Helps!
Home can use ____to distribute warm air from a sunroom
Answer:
Solarpannels? I honestly don't know I'm just trying to be helpful.
what happens when u mix blood and water
Answer:
Blood and water
Explanation:
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:
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:
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•◍)❤
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.
Which have a mass of 0 amu?
A. Protons
B. Neutrons
C. Electrons
D. Protons and neutrons
E. Protons and electrons
F. Neutrons and electrons
I give Brainliest!
Answer:
c
Explanation:
Answer:
C. electrons. They also have a charge of -1
2. The air pressure inside a submarine is 0.56 atm. What would be the pressure in
mmHg?
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
Someone help please!
Answer:
D
Explanation:
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.
during a heating or cooling process, how are changes in enthalpy and temperature related?
Answer:
answer this and ill answer that
Explanation:
during a heating or cooling process, how are changes in enthalpy and temperature related?
23. Which element is most likely to be malleable?
a. Bromine b. Radon c. Nickel d. Carbon
Which phase of matter will take the shape of its container?
Answer:
Liquid
Explanation:
All liquids take the shape of the container
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 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.
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 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.
march 10
march 3
february 16
february 22
your answer will be March 3
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.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2
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.
please help with both of these lol
Answer: 1. Unbalanced
2. Atoms cannot be created or destroyed only rearranged
Explanation:
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:
https://brainly.com/question/25921566
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.
What causes Earth’s major wind patterns?
Question 1 options:
Radiant energy from the sun strikes Earth unevenly.
The density of ocean water changed wind patterns
The latitudes of different areas
The Earth is spinning
Answer:
A.
Explanation:
The sun unevenly hits the Earth, causing wind to form and move around the poles; never constant.
Answer:
A is correct i just took the quiz and got it right
Explanation:
b) Why is aluminium extracted using electrolysis and not carbon?
Answer:
Aluminum is more reactive than carbon so it must be extracted from its compounds using electrolysis.
Explanation:
Even though aluminum is more abundant than iron in the Earth's crust, aluminum is more expensive than iron. This is mainly because of the large amounts of electrical energy used in the extraction process.