Answer:
High
Explanation:
The answer to this question has been hinted in the question;
molecules in warm water move faster than molecules in cold water
This means that the relationship between temperature and movement of atoms is as follows;
At higher temperatures, atoms possess more energy and due to this they are able to move at high velocity (really fast).
On the other hand, lower temperatures means that the atoms possess less energy and due to this they move with a lower velocity.
Identify the reaction type shown and describe the clues that were used to identify it.
NH4NO3 → N2O + 2H2O
Answer:
This chemical equation represents a decomposition reaction. This identification is based on the fact that the single reactant chemical compound breaks down into two different chemical substances that are different from the initial chemical substance.
Explanation:
it was the sample response lol
A reactant is broken down into two or more products in the decomposition reaction. The given reaction is a decomposition reaction.
Decomposition reaction:
In this type of chemical reaction, a reactant is broken down into two or more products.
For example- Ammonium nitrate is broken down into nitrous oxide and water molecules.
[tex]\bold {NH_4NO_3 \rightarrow N_2O + 2H_2O}[/tex]
Therefore, the given reaction is a decomposition reaction.
To know more about Decomposition reaction:
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The boiling point of ethanol is 78.3 degrees Celsius. The boiling point of
ethanol on the Kelvin scale is approximately... *
Answer:
K = 351.3
Explanation:
The relationship between the Celsius scale and kelvin scale is;
K = 273 + C
Since the Celsius temperature = 78.3
The kelvin temperature is given as;
K = 273 + 78.3
K = 351.3
How does adaption allow mice with the mutation to survive better in some areas
Answer: Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations. Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment. A mutation is an alteration of the DNA sequence.
How many molecules are in 2.91 X 1022 atoms of He
Answer:
Explanation:
1 mole of oranges contains 6.02 x1023 oranges. 1 mole of helium gas contains 6.02 x1023 helium atoms. 1 mole of water contains 6.02 x1023 water molecules.
...
Answer:
25194.56
Explanation:
You'll need a scientifuc calculator
2.91*10^22*1 = 2.91E22
2.91E22-/6.02*10^23=25194.56
6.02*10^22 Is the Mole number
36.0 g of Be contains how many moles?
Answer:
Explanation:
4
Physical and chemical properties are used to describe and identify matter. Physical properties can be observed without changing the identity of the substance. Chemical properties can be observed by attempting to change the identity of a substance. What are two physical and chemical properties that you can use to help you identify a substance?
Extensive properties, such as mass and volume, depend on the amount of matter that is being measured. ... Both extensive and intensive properties are physical properties, which means they can be measured without changing the substance's chemical identity
You need to make an aqueous solution of 0.150 M sodium fluoride for an experiment in lab, using a 500 mL volumetric flask. How much solid sodium fluoride should you add?
Answer:
Explanation:
Solution required is .15 M 500 mL sodium fluoride .
molecular weight of sodium fluoride = 42
one mole of sodium fluoride = 42 grams
No of moles contained in the solution of .15M , 500 mL solution
= .15 x 0.5 moles = .075 moles
1 mole = 42 g
.075 moles = .075 x 42 = 3.15 grams .
So mass of sodium fluoride required = 3.15 g .
what ions are formed when sodium reacts with fluorine
Answer:
One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it.
Explanation:
7. Jasmine wants to prevent getting burned by accidently touching a hot metal pipe, What would be the worst
insulator for her to use to put around the pipe?
a, Glass
b. Rubber
c. Cloth
d. Wood
Answer:
A) Glass
Explanation:
Glass is a conductor, so it allows heat to go through it (Ex. Touching a pie pan that came right out of the oven)
Rubber is an insulator, so heat has a hard time passing through (Ex. Using a rubber grip on a cast iron pan.
Cloth is also an insulator, so heat has a hard time passing through (Ex. Using a pot holder to prevent the counter from getting scarred)
Wood is also an insulator, so heat has a hard time passing through (Ex. Bedding for a rabbit hutch)
Hope this helps!!
1
a)Put the metals used (magnesium, copper, iron, zinc)
in order from the least reactive to the most reactive.
The more reactive metal will displace the other metal
from the solution of its metal salt.
Answer:
Magnesium
Zinc
Iron
Copper
Explanation:
The given elements are:
Magnesium, copper, iron and zinc
We are to put them in the order from the least reactive to the most reactive of all.
To solve this problem, we simply use the activity series of metals to arrange the elements.
The activity series arranges metals from the most reactive to the least reactive. The more reactive metals displaces the lesser one from solutions.
So;
Magnesium
Zinc
Iron
Copper
Base changes phenolphthalein to pink it is true or false
Answer:
It’s false
Explanation:
it could be true if the question mentioned alkaline solution
Answer:
True
Explanation:
Phenolphthalein is colorless in the presence of an acid and turns pink in the presence of a base.
E. What is one way that your body knows if it is upside-down or not?
Answer:
You get some type of pressure that you start to feel in your muscles and joints from gravity and movement. How do they say it? Something called "seat-of-the-pants" (something like that). You get some type of pressure, and your body senses it, and it knows when you are upside-down or not, because if you're not, then you won't get any pressure in your muscle.
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Can someone help me with these three questions? please
Answer:
23 43 45 43
Explanation:
A vernier calipers are more precise than metre rule
True
False
Answer:
true
Explanation:
Vernier caliper can give exact measurements in mm.
hope it helps! please mark me brainliest
thank you! have a good day ahead
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How many grams of Fe are needed to create 32.5mol Fe3O4?
Answer:
5444.89 grams of Fe
Explanation:
1) We need the chemical equation for Fe3O4 to find the mole ratio for Fe to Fe3O4. Chemical equation:
3Fe+4H2O → Fe3O4+4H2
The mole ratio of Fe to Fe3O4 is 3:1
2) Now, we find how many grams of Fe are needed to produce 32.5 moles of Fe3O4.
[tex]32.5 moles Fe3O4[/tex][tex]x \frac{4 mole O}{1 mole Fe3O4}[/tex] = 97.5 moles Fe needed to produce 32.5 moles of Fe3O4
3) Convert 97.5 moles of Fe into grams. The molar mass of Fe is 55.845g.
[tex]97.5 mole Fe[/tex][tex]x\frac{55.845g Fe}{1 mole Fe}[/tex] = 5444.8875g or 5444.89g.
HELP LIKE HELP HURRY I HAVE 2 hours. To finish
Answer: hello, the answer would be rotates, revolves
hope this helps :)
Explanation:
During the naval battles of the South Pacific in World War II, the U.S. Navy produced smoke screens by spraying titanium tetrachloride into the moist air where it reacted according to the equation:
TiCl4 + H2O TiO2 + HCl
a. How many moles of H2O are needed to react with 6.50 moles of TiCl4? (13.0)
b. How many moles of HCl are formed when 8.44 moles of TiCl4 react? (33.8)
Explanation:
The reaction given is;
TiCl4 + H2O --> TiO2 + HCl
The reaction is not balanced, upon balancing it is given as;
TiCl4 + 2H2O → TiO2 + 4HCl
a. How many moles of H2O are needed to react with 6.50 moles of TiCl4?
From the reaction;
1 mol of TiCl4 requires 2 mol of H2O
6.50 mol of TiCl4 would require x mol of H2O
1 = 2
6.5 = x
x = 6.5 * 2 / 1 = 13.0 mol
b. How many moles of HCl are formed when 8.44 moles of TiCl4 react?
From the equation of the reaction;
1 mol of TiCl4 reacts to form 4 mol of HCl
8.44 mol of TiCl4 reacts to form x mol of HCl
1 = 4
8.44 = x
x = 8.44 * 4 / 1 = 33.76 mol
How many grams are in 25.0 moles of carbon tetrachloride (CCI)?
Answer:
3.84 kg
Explanation:
CCl4 molar mass: 153.82 g/mol
n = mass / molar mass
25 moles = mass / 153.82 g/mol
mass = 25 x 153.82
mass = 3845 g or 3,84 kg
4. The chemical energy in the person's body is transformed into when they peddle the bike, causing the generator to rotate. Some energy in the bike wheel is lost to . The generator produces electricity, which heats the water, causing it to produce thermal energy in the form of steam. When the person's chemical energy runs out, how do you replenish it? 5. Change the initial energy source to sun, the intermediate energy source to the solar panel, and the final energy source to the windmill. In this system, is produced from the sun and transformed into electricity in the solar panel. Both of these types of energy are considered forms of . The result of this system is that the windmill produces mechanical energy. 6. Try a few more scenarios, choosing different initial, intermediate, and final energy sources. Observe places where energy is transformed and lost. Creating systems with the least amount of energy is important in engineering design.
Answer:
Mechanical Energy, Thermal Energy, By Feeding Them Food, Light Energy, Electromagnetic Energy, it's right on Edge
Explanation:
Answer:
1. mechanical energy, 2. thermal energy, 3. by feeding them food, 4. light energy 5. electromagnetic energy
Explanation:
got it right on edg ;))
Help me plzz and thank u
Answer:
the terminator because i did this test
80g of calcium reacts with water to form 114g of calcium hydroxide and 2g of
hydrogen.
2 Ca + 2 H0+2CaOH + H,
What mass of water was used in this reaction?
Answer:
31g
Explanation:
80g(Ca)+m(H2O)=114g(CaOH)+2g(H2)
the total mass of the prodicts doesn't change throughout the process
80g+m(H20)=116g
m(H20)=31g
Scientists often look at how much isotopes of ______
have decayed to help estimate the age
of a fossil or once-living material.
Answer:
If im correct it’s radioisotope
Explanation:
Scientists often look at how much of isotopes of : Carbon-14 have decayed
To determine the age of fossils archeologist make use of the carbon-14 dating ( i.e. making use of naturally occurring radioisotope ¹⁴C ) which is used to determine the age of fossils or material that were once in living on earth.
Carbon has about three (3) isotopes ( Carbon-12, Carbon-13 and Carbon-14 ) .but Carbon-14 isotope is most useful in determining the age of fossils and once-living things
Hence we can conclude that scientists often look at how much of isotopes of Carbon-14 have decayed to help estimate the age of fossils.
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6.900x10^10 ÷ 4.000x10^8
Answer:
1.725e+18
Explanation:
Why would it be harder to jump on the planet Jupiter than on Earth?
HELP PLSSS
What is the volume of 4.78g of O2 gas at STP?
Answer:
Explanation:
The trick here is to realize that if you know the volume of a gas at STP, you can use the fact that
1
mole of any ideal gas occupies
22.7 L
under STP conditions to calculate how many moles of gas you have in your sample.
Under STP conditions:
1 mole of an ideal gas = 22.7 L
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
In your case, you know that your sample of gas occupies
2.28 L
under STP conditions, which are currently defined as a pressure of
100 kPa
and a temperature of
0
∘
C
.
This means that your sample will contain
2.28
L
⋅
molar volume of a gas at STP
1 mole gas
22.7
L
=
0.10044 moles gas
Now, the molar mass of the gas is the mass of exactly
1
mole of the gas. In your case, you know that you get
3.78 g
for every
0.10044
moles, which means that you have
1
mole
⋅
3.78 g
0.10044
moles
=
37.6 g
Since this is the mass of
1
mole of gas, you can say that the molar mass of the gas is
molar mass = 37.6 g mol
−
1
−−−−−−−−−−−−−−−−−−−−−−−
which element has the lowest atomic mass in group 6A
What is happening at x ?
10. There are two bears that both have the same proteins for ear shape in their cells. The bears have
different parents. What can you say about the bears' ear shape?
Answer:
They will have the same ear shape since their proteins connect in the same ways to determine ear shape.
Explanation:
I majored in Chemistry
Answer:
They will have the same ear shape since their proteins connect in the same ways to determine ear shape.
Explanation:
True or false for these!!!! Please help
Which statement best describes the relationship between photosynthesis and cellular respiration?
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
Photosynthesis is part of the carbon cycle, and cellular respiration is not.
Only plants perform photosynthesis, and only animals perform cellular respiration.
Photosynthesis releases carbon into the atmosphere, and cellular respiration removes carbon from the atmosphere.
Answer:
Photosynthesis removes carbon from the atmosphere, and cellular respiration releases carbon back into the atmosphere.
Explanation:
The first option clearly expresses the relationship between photosynthesis and cellular respiration.
Cellular respiration releases carbon back into the atmosphere whereas photosynthesis removes the carbon from the atmosphere.
Photosynthesis is the process whereby green plants manufacture their food using carbon dioxide and water.
In cellular respiration, the product of the photosynthesis is used by organisms to produce energy.
