Answers
Answer:
The air gap is too narrow to allow the air to circulate easily. This therefore reduces the rate of heat transfer by convection. The trapped air reduces the rate of heat loss through the window by conduction and convection. The room in the house therefore stays warmer for longer reducing heating costs
Related Questions
What is a synthetic reaction?
Answers
A sample of oxygen gas has a volume of 130.0 ml when its pressure is 0.952 atm. What will the volume of the gas be
at a pressure of 0.974 atm if the temperature remains constant?
Answers
Answer:
the volume of the gas when pressure 0.974atm is equal to 127.06ml
1. How many particles are in 8.14 moles of Na?
Answers
Answer:
8.14x6.022×10^23 ~ 4.901908x10^24
Explanation:
Identify the type of reaction and products of the reaction. Mg(OH)2 + Al(NO3)3 ->
Answers
Answer:
Double replacement
Mg(NO3)2 + Al(OH)3
Explanation:
What is the volume of 2.0 mol CO2 at STP?
Answers
Answer:
44.8 litres is the answer to the question
What is the answer please tell me
Answers
Answer:
you need to include the bottom portion, not enough info
Explanation:
URGENT!!
Which substance is reduced in this following reaction? (which element goes through reduction).
Explain! (define what's going on, etc)
2Mg + O2 --> 2MgO
Answers
Answer:
i think it's oxygen
Explanation:
the smart kid in my class said so lol
what is the mass in kilograms of 25L of hydrophosphoric acid?
Answers
Answer:
0.0345kg is the mass of 25L of the sample
Explanation:
Hydrophosphoric acid, H₃P = Phosphine has a density of 1.38g/L.
To solve this question we need to convert the volume of the gas to mass in grams as first and then to kilograms as follows:
Mass in grams:
25L * (1.38g / L) = 34.5g
Mass in kilograms:
34.5g * (1kg / 1000g) = 0.0345kg is the mass of 25L of the sample
Help lol sorry if I’m spamming this is just really hard for me
Answers
The subscript on chemical equations tells you how many atoms the elements have. If there is no subscript then there is only 1 atom.
In what ways are you being physical activie in a typical day?
Answers
Almost all of the energy that supports life on Earth comes from _______________________.
Answers
Answer:
THE SUN!
Explanation:
On a recent day the difference between the lowest temperature at the highest temperature of the day was 9*C. By how many degrees fahrenheit did the temperature change
Answers
Answer:
48.2 Fahrenheit
Explanation:
Temperature change = 9*C
By how many degrees Fahrenheit did the temperature change?
The relationship between Fahrenheit and degree Celsius is given as;
F = (9 / 5) C + 32
Inserting the value of C;
F = (9 / 5) * 9 + 32
F = 48.2 Fahrenheit
GIVING BRAINLIEST!
Calculate the concentration of a solution of sodium chloride if 15g are added to water to make a 200cm³ solution. The answer shoulsd be in units of g/dm³.
Answers
Answer:
75 g/dm³
Explanation:
The following data were obtained from the question:
Mass of solute (NaCl) = 15 g
Volume of solution = 200 cm³
Concentration (in g/dm³) =?
Next, we shall convert 200 cm³ to dm³. This can be obtained as follow:
1000 cm³ = 1 dm³
Therefore,
200 cm³ = 200 cm³ × 1 dm³ / 1000 cm³
200 cm³ = 0.2 dm³
Thus, 200 cm³ is equivalent to 0.2 dm³.
Finally, we shall determine the concentration of the solution as follow:
Mass of solute (NaCl) = 15 g
Volume of solution = 0.2 dm³
Concentration (in g/dm³) =?
Concentration (in g/dm³) = mass / volume
Concentration (in g/dm³) = 15 g /0.2 dm³
Concentration (in g/dm³) = 75 g/dm³
why hydrogen and oxygen atoms are more stable when they form bonds in a water molecule?
Answers
The outer shell of electrons is full, so there is no need to gain or lose electrons.
The hydrogen and oxygen atoms are more stable in water molecules as they get a complete valence shell when they bonded with other atoms.
What is the reaction to the formation of water?In a chemical reaction, two or more reactants react with each other under the chemical condition to form two or more products. The Chemical reaction is defined as a reaction two or more reactant components react with each other to form two or more products.
The water is formed by reacting hydrogen and oxygen. The chemical reaction of water formation is shown below.
[tex]H_2(g)+O_2(g)\longrightarrow H_2O(l)[/tex]
The balanced chemical equation can be defined as a reaction where the number of moles of reactants is equal to the number of moles of products.
[tex]H_2(g)+ \frac{1}{2}O_2(g)\longrightarrow H_2O(l)[/tex]
The hydrogen atoms have one electron and the oxygen has two electrons less than the complete valence shell. But in the water molecule, every atom has a complete valence shell so atoms become more stable.
Learn more about water formation, here:
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Given the phase diagram above, what phase would water be in if it had the following properties:
a. 50 °C, and 0.5 atm pressure
b. -50°C, and 0.5 atm pressure
c. 125 ° C, and 1.0 atm pressure
Answers
Answer:
b
Explanation:
What does a chemical equation do?
Answers
Answer:
A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow. In a balanced chemical equation, the numbers of atoms of each element and the total charge are the same on both sides of the equation.
Answer:
chemical equation and chemical reaction
Explanation:
chemical equation is the symbolic representation Of a chemical reaction in the form of symbols
Which of the following particle diagrams represents a mixture?
Answers
Answer:
???
Explanation:
i would help answer but your post has no diagrams or at least there not showing up
State the atomic number and mass number of the element.
Answers
Answer:
Please give me the Elements and I will help in the comments!
Explanation:
Hope I can help you!
:)
ANSWER:
What they said
Explanation:
What question did this young man have about his father? und
Answers
i need
this asap!! helppppp
Answers
Hund's rule tells us that 1) any orbital in a given subshell must first be occupied by a single electron before being occupied by a second electron and 2) the electrons in a singly occupied orbital all have the same spin.
Diagram I follows both 1 and 2; there are no prematurely-filled orbitals (boxes), and all the singly-filled 2p orbital have the same spin (the arrows are all pointing up). So, diagram I follows Hund's rule and is correct.
Diagram II violates 1: the first box in the 2p subshell is doubly filled while there's still a vacant orbital. That second electron in the first box should be in the third box and pointing upward for diagram II to be correct. Thus, diagram II violates Hund's rule and is incorrect.
Diagram III follows rule 1 but violates rule 2: While every 2p orbital is singly filled, they do not all have the same spin. In the second box, the arrow is pointing down while the arrows in the other two boxes are pointing up. Thus, diagram III violates Hund's rule and is incorrect.
So, of the diagrams given, II and III do not follow Hund's rule and thus are incorrect.
An avocado contains 234 Calories, with 21 grams of fat. Calculate the percent of Calories from fat.
Answers
Work, which is required to move a body from a resting position,
is called
A: kinetic energy
B: Potential Energy
C: Rotational Energy
D: Vibrational Energy
Answers
Organisms that are made up of prokaryotic cells are NOT ____________.
Question 3 options:
Bacteria
Multicellular
Simpler than organisms made up of Eukaryotic celled organisms
All of these are true about prokaryotic cells
Answers
Answer:
Multicellular
Explanation:
Prokaryotic cells are unicellular because the do not have a nucleus and lack organelles, while eukaryotic cells do have a nucleus, have organelles, and are are multicellular. :)
Organisms that are made up of prokaryotic cells are NOT
Multicellular.
Classification of Organisms based on cellular organisation.Living organisms can be classified based on their cellular organisation.
Organisms that are made up of one cell are known as unicellular organisms.
Organisms that are made up of more than one cell are known as multicellular organisms.
A prokaryote is an organism that lacks distinct nucleus while eukaryote is an organism that possess a nucleus that is enclosed in a nuclear envelope.
While prokaryotes are always unicellular organisms, eukaryotes can be either unicellular or multicellular.
Therefore, organisms that are made up of prokaryotic cells are not multicellular.
Learn more about multicellular here:
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(Thanks for the recent help this should be my last question for right now until I got a new one)
which of the following is an example of a solution?
A. Chex mix
B. Fruit Salad
C. Peanuts and candy corn
D. Salt water
Answers
Answer:
I`m pretty sure its salt water
Explanation:
How does electronegativity affect
bonding? (Think about ionic vs
covalent).
Answers
Remember mass/atoms is not created or destroyed. Atoms don't appear and disappear. Mark the only balanced equation below.
Answers
Answer:
The answer is Option 4
Explanation:
Which is the correct theory about the solar system: sun-centered or Earth-centered? Why?
Answers
Answer:i dont know thats why imon her
Explanation:
scale of 1 to 10 how pretty is this image
Answers
Answer: 10 always love yourself
Explanation:
When ethane (C2H6) burns, it produces carbon dioxide and water:
2C2H6(g)+7O2(g)→4CO2(g)+6H2O(l)
How many moles of water will be produced when 3 moles of ethane are burned?
3 moles
6 moles
9 moles
12 moles
Answers
Answer:
6 moles
Explanation:
According to stoichiometry and given chemical equation 2C₂H₆(g)+7O₂(g)→4CO₂(g)+6H₂O(l), 9 moles of water are produced when 3 moles of ethane are burned.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is important while balancing chemical equations.
In the given problem , as 2 moles of ethane produce 6 moles of water so according to stoichiometry
∴ 3 moles of ethane will produce 3×6/2=9 moles
Thus, 9 moles of water are produced when 3 moles of ethane are burned.
Learn more about stoichiometry,here:
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Is a liquid soluble?
Answers
Answer:
Liquids have characteristic properties based on the molecules they are made of. Liquids can dissolve certain other liquids, depending on the attractions between the molecules of both liquids. Polar liquids, like water, dissolve other liquids which are polar or somewhat polar.
Explanation: