Answer:
Rabbit and Mouse
Explanation:
The rabbit and mouse are the prey of foxes.
9. Which of these substances have a higher specific heat, and why?
A. copper; hydrogen bonding
B. copper, metallic bonding
C. water; hydrogen bonding
D. water; metallic bonding
Answer:
C
Explanation:
water has the highest specific heat capacity of any liquid,as a hydrogen bond
Explain using the kinetic molecular theory what happens to the water molecules when changing from liquid to gas
Answer:
If the molecules are heated further, the liquid water will become water vapor, which is a gas. Gas particles have more energy and are on average at distances from each other which are much larger than the size of the atoms/molecules themselves.
Which of the following is a chemical change?
A. Water vapor in the air turns to liquid water in the form of rain
B. The oxygen in the air forms ozone in presence of UV rays
C. Dust and soot particles being suspended in the air
D. Sulphur dioxide being released in the air
Answer:
It would be B)
Explanation:
It wont be C because nothing is happening its just being released, but in B its being changed by the UV rays. So this is a chemical change or looks like the best answer out of all these
A 951g sample of carbon steel with a specific heat capacity of .49j is heated to 673k and quenched in oil. The steel cools to 523k. assuming there is no heat lost to surroundings, calculate the heat absorbed by oil.
Answer: all I know it’s not -31.5 for ppl taking the k12 test
Explanation: I took the test
Answer:
its 69.9
Explanation:
yw
Why is it not advisable to light a charcoal stove in limited supply of oxygen.
Answer:
Due to the limited supply of oxygen, carbon (ii) oxide, a poisonous gas, is produced instead of carbon(iv) from the burning charcoal stove and this may result in death when inhaled.
Explanation:
When charcoal is burnt in a plentiful supply of oxygen, the combustion products is carbon (iv) oxide (carbon dioxide) which is not very toxic to the human body. The equation of the reaction is given below:
C + O₂ ----> CO₂
However, in a limited supply of oxygen gas, the combustion product is carbon (ii) oxide. The equation of the reaction is given below:
2C + O₂ ----> 2CO
Carbon (ii) oxide is a colorless and odorless gas which unlike carbon (iv) oxide is very toxic to human and results in fatality when inhaled in even small doses for a few minutes. Its mechanism of action of toxicity is that it competes with oxygen for transport in the body by hemoglobin. It combines irreversibly with hemoglobin to form carboxyhemoglobin, thereby depriving tissues and cells the oxygen they need. This results in death of the cells and tissues as well as of the whole organism. Thus, it is not advisable to light a charcoal stove in limited supply of oxygen.
can people with different parents still have traits in common?
.......................yes...............ofc.......
Write a Balanced Equation
H2 + Cl2 --> __HCl
Answer:
2HCL
Explanation:
Both the elements have 2 so when placing the 2 infront ,it'll distribute/ apply to both
Florida's 'Space Coast" was promoted by Cape Canaveral and surrounding communities as an attractive tourist destination.
What evidence BEST supports this statement?
A)
A NASA-themed amusement park was built next to Kennedy Space Center.
B)
Space-themed motels and restaurants were built around Cape Canaveral.
C)
Certified NASA astronauts were hired to give tours around Cape Canaveral.
D)
Florida's largest international airport was built near Kennedy Space Center,
Answer:
D! :)
Explanation:
Which body systems help to exchange oxygen and carbon dioxide?
A. respiratory and digestive
B. circulatory and digestive
C. respiratory and circulatory
D. digestive and excretory
its gelatin and a fruit cup the same (its for a project)
Answer:
No
Explanation:
Gelatin is a substance that makes jello, and a fruit cup is a cup full of fruit
Answer:
no
Explanation:
The Pi Song
Lyrics. And now
AsapSCIENCE presents-
100 digits of π
3.14159, this is π
Followed by 2-6-5-3-5-8-9
Circumference over diameter
7-9, then 3-2-3
OMG! Can't you see?
8-4-6-2-6-4-3
And now we're on a spree
38 and 32, now we're blue
Oh, who knew?
7, 950 and then a two
88 and 41, so much fun
Now a run
9-7-1-6-9-3-9-9
Then 3-7, 51
Half way done!
0-5-8, now don't be late
2-0-9, where's the wine?
7-4, it's on the floor
Then 9-4-4-5-9
2-3-0, we gotta go
7-8, we can't wait
1-6-4-0-6-2-8
We're almost near the end, keep going
62, we're getting through
0-8-9-9, on time
8-6-2-8-0-3-4
There's only a few more!
8-2, then 5-3
42, 11, 7-0 and 67
We're done! Was that fun?
Learning random digits
So that you can brag to your friends. (XP this is to weird as hell)
3.14159, this is π
Followed by 2-6-5-3-5-8-9
Circumference over diameter
7-9, then 3-2-3
OMG! Can't you see?
8-4-6-2-6-4-3
And now we're on a spree
38 and 32, now we're blue
Oh, who knew?
7, 950 and then a two
88 and 41, so much fun
Now a run
9-7-1-6-9-3-9-9
Then 3-7, 51
Half way done!
0-5-8, now don't be late
2-0-9, where's the wine?
7-4, it's on the floor
Then 9-4-4-5-9
2-3-0, we gotta go
7-8, we can't wait
1-6-4-0-6-2-8
We're almost near the end, keep going
62, we're getting through
0-8-9-9, on time
8-6-2-8-0-3-4
There's only a few more!
8-2, then 5-3
42, 11, 7-0 and 67
We're done! Was that fun?
Mechanical layers of the earth is divided by what they are made of. True or False?
Science 6th grade
in a chemical reaction, conservation of mass is demonstrated by proving that the mass of the reactants is___ the mass of the products.
Answer:
equal to
Explanation:
The law of conservation of mass tells us that during a chemical reaction, matter cannot be created or destroyed, but it can change from one form to another. This means that while atoms can rearrange themselves into new substances during a reaction, the mass of the reactants and products will be the same.
Explain how the patterns of differences between a physical and chemical change are explained by changes at the scale of atoms and molecules (interacting differently, rearranging, etc?)
Answer:
A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
Explanation:
If 5 moles of nitrogen are used how many moles NH3(g) are produced
Answer:
I hope this will help you....and please mark me as Brilliant
Explanation:
1 moles N2 you can produce 2 moles of NH3, (see equation)
5 mol N2 gives 10 mole NH3
molar mass of NH3 = 17.03 g/mole
10 moles NH3 is 10 * 17.03 gram = 170.3 gram NH3.
Balanced equation:
N2(g) + 3 H2(g) → 2 NH3(g)
The boiling point of water is elevated when 125 g of ethylene glycol (C₂H₆O₂) is dissolved in 1200 g of water. What is the new boiling point of water? Kb for water is 0.52 C°/m.
Answer:
100.87°C
Explanation:
This is about elevation of boiling point, one of the colligative properties.
Formula is:
Boiling T° of solution - Boiling T° of pure solvent = Kb . m . i
Kb is the boiling constant.
m means molality (mol/kg of solvent)
i = numbers of ions dissolved.
Our solute is C₂H₆O₂. As it is an organic compound, no ion is generated, so i = 1.
We determine moles of solute: 125 g . 1mol /62g = 2.02 moles.
We determine molality = 2.02 mol / 1.2 kg → 1.68 m.
Boiling T° of solution - 100°C = 0.52°C/m . 1.68m . 1
Boiling T° of solution = 0.52°C/m . 1.68m . 1 + 100°C → 100.87 °C
Kayla learned that when you play with the Soccket for 30 minutes it gives you 3 hours of light. She thinks that rolling the ball slowly with her baby brother for 30 minutes will give her the same amount of energy as kicking it in a game of soccer for 30 minutes. Do you agree or disagree? State your claim and use evidence from what you've learned about speed and energy to explain your answer.
Answer:
disagree it wont be the same momentum
Explanation:
cuh
PLEASE HELP CHEMISTRY
Answer:
charge of copper.. ........mark me brainlest
Using the periodic table determine the number of neutrons in 16O
We often denote oxygen as 16O8 where 16 is the mass number and 8 is the atomic number.
number of neutrons=16-8=8
SHOW ALL WORK AND INCLUDE UNITS
How many kilojoules of heat are released when 0.72 mole of oxygen gas are used to combust methane?
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (ℓ) + 890kJ
Answer:
0.72 mole of oxygen would produce 320.4 kJ of heat.
Explanation:
CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (ℓ) + 890kJ
According to the equation,
2 moles of O₂ produces 890 kJ of heat
So, 0.72 moles of O₂ will produce:
Therefore, 0.72 moles of oxygen would produce 320.4 kJ of heat.
HAHAHAHAHAAHAHAHAHA help
Answer:
the sun
Explanation:
Taya observed a plant that is small and grows close to the ground because it does not have the water transport
structures required to grow taller.
Which plant phylum did this plant most likely belong to?
O conifers
Oferns
O mosses
O flowering plants
Answer:
O mosses
Explanation:
research zhenyis achievements in the world of science. what is she most known for? i jeed 3 facts about her life.
Answer:
She breached the feudal customs of the time, which hindered women's rights, by working to educate herself in subjects such as astronomy, mathematics, geography, and medicine. She was well known for her contributions in astronomy, mathematics, and poetry. Zhenyi was a famous female scientist from the Qing dynasty.
Hope this helps have a good day. :)
Examine the diagram that shows the levels of organization of an organ system.
αμματα
1
2
3
If level 2 becomes diseased, what is a possible consequence?
The organ system will generate more cells to create a new organ to replace the diseased component.
The organ will fail to function properly, affecting the organ system and consequently the organism.
The cells will bypass creating tissues, creating the organ directly to limit the spread of the disease to the organism.
The organ will temporarily shut down until the disease is repaired with the replication of new cells.
Answer:
lol
Explanation:
Answer:
I think its B maybe
Explanation:
_____ C8H8 + _____ O2 _____ CO2 + _____ H2O
What do you want for the answer the balance equation?
SHOW ALL WORK AND INCLUDE UNITS
How much heat is released when 1.4 mol of hydrogen fluoride are produced?
H2 (g) + F2 (g) → 2HF (g) + 536kJ
Answer:
+375.2 KJ.
Explanation:
The balanced equation for the reaction is given below:
H₂ + F₂ —> 2HF ΔH = +536 KJ
From the balanced equation above,
2 moles of HF required +536 KJ .
Finally, we shall determine the heat required to produce 1.4 mol of hydrogen fluoride, HF. This is illustrated below:
From the balanced equation above,
2 moles of HF required +536 KJ .
Therefore, 1.4 moles of HF will require = (1.4 × 536)/2 = +375.2 KJ
Thus, +375.2 KJ of heat energy is required.
Which of the following causes rocks to break down into smaller pieces?
A. Weather
B. water
C. time
D. all of the above
6 minutes ago • Chemistry • High School
Ethanol (C2H5OH) is produced from the fermentation of
sucrose in the presence of enzymes.
AC
C12H22011(aq) + H2O(g) 4 C2H5OH(1) + 4 CO2(g)
Determine the theoretical yield and the percent yields of ethanol if 720.g
sucrose undergoes fermentation and 323.0 g ethanol is obtained.
Answer:
387.62, 83.33%
Explanation:
Given:
[tex]C_{12} H_{22} O_{11}(aq) + H_2O(g) -4 C_2H_5OH(1) + 4 CO_2(g)[/tex]
720g of Sucrose produces 323g ethanol.
Theoretical yieldTo calculate the theoretical yield, you can use a mole-to-mole ratio. Assuming that there is excess H2O, you can calculate the theoretical yield like so:
[tex]720g C_{12}H_{22}O_{11}*\frac{1 mol C_{12}H_{22}O_{11}}{342.3g} *\frac{4mol C_2H_5OH}{1mol C_{12}H_{22}O_{11}} *\frac{46.07g}{1molC_2H_5OH} =387.62g[/tex]
Percent YieldAn easy way to find percent yield is
[tex]\frac{Actual }{Theoretical} *100[/tex]
So, plug the numbers in.
[tex]\frac{323.0}{387.62} *100 = 83.33%[/tex]
So, the percent yield is 83.33%.
Find the mass, in grams, of 1.00 x 1023 molecules of CO2
Answer:
Cosimo
Explanation:
How many moles of sodium are required in order to produce 5 moles of
sodium chloride?
Answer:
5 moles of Sodium are required to produce 5 moles of Sodium Chloride.
Explanation:
I am assuming you were not given an equation and this is a synthesis reaction.
Let's begin by writing a balanced chemical equation for the synthesis of sodium chloride.
2Na⁺ + Cl₂⁻ -> 2NaCl
Since Cl₂ exists as a diatomic molecule, we must have 2 +1 charges from Na to balance out the 2 -1 charges of Cl₂ (-1 for each Cl atom). This will then form 2 moles of NaCl.
To produce 5 moles of sodium chloride, we can multiply the entire equation by 2.5. This will result in:
5Na⁺ + 2.5Cl₂⁻ -> 5NaCl
The stoichiometric ratios of this new equation is:
5 Na: 2.5 Cl₂: 5NaCl
5 moles of sodium (Na) are required to produce 5 moles of sodium chloride (NaCl).