What is the definition of specific heat?
A. The heat needed to raise the temperature of 1 g of a substance
1°C
B. The total amount of energy contained within 1 mole of a
substance
C. The heat required to break the molecular bonds within a
substance
D. The temperature change between the melting and boiling points of
a substance
Answer:
A. The heat needed to raise the temperature of 1 g of a substance 1°C.
Explanation:
how this has helped you
what class is sodiumtrioxocarbonate(IV) strong or weak base and why?
Answer:
Strong base
Explanation:
Anhydrous sodiumtrioxocarbonate(IV) Na2CO3 and crystalline sodiumtrioxocarbonate(IV) Na2CO3 are two forms of sodiumtrioxocarbonate(IV) Na2CO3. The Solvay process is the most common name for the sodiumtrioxocarbonate(IV) Na2CO3 production process.
Still, as Na2CO3 reacts, it produces CO3. That tends to be a weak acid's conjugate base. As a result of the removal of H+, carbonic acid was formed (Strong Base)
What is the change in temperature when 75 grams of water releases -2657 J of energy? The specific heat of water is 4.18 J/g°C
what is the difference between diffusion and osmoses
Answer:
Diffusion means that particles travel from a higher concentration to a lower concentration region before balance is achieved. The semi-permeable membrane is present in osmosis, so that only solvent molecules can travel freely to equalize the levels.
q = (100g) (4.184 J/g°C) (40-26) degrees C. Show how you solved for q (in Joules) here:
Answer:
5857.6 J
Explanation:
Everything is in the correct units so solve normally
q= 100*4.184*14
q= 418.4*14
q= 5857.6 J
the question in the picture, im not sure if my answer is correct, what is the correct answer?
Answer:
ur correct
Explanation:
Students in a robotics class designed cars to race as their end of the year project. Students collected data on their cars and compared their individual data before the final race. The mass and the force applied to each car is recorded in the table below. Based on this information which car has the greatest acceleration? *
In each of the molecules drawn below one chemical bond is colored red. Decide whether this bond is likely to be polar or not. If the bond is likely to be polar, write down the chemical symbol for the atom which will have more negative charge. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar. The highlighted bond is polar and the more negative atom is The highlighted bond is nonpolar.
The question is incomplete, the complete question is shown in the image attached to this answer
Answer:
See Explanation
Explanation:
I want us to bear something in mind. A compound is polar when there is a considerable difference in electronegativity between two bonding atoms in the molecule.
The implication of this is, the shared electron pair of the bond will be closer to the atom of greater electronegativity than the atom of lesser electronegativity thereby creating a dipole in the molecule.
Let us consider each of the compounds;
For Cl-F, the highlighted bond is polar and F is the more electronegative atom
For H-Br, the highlighted bond is polar and Br is the more electronegative atom
For N≡N, the highlighted bond is nonpolar since it is a homonuclear diatomic molecule.
g Alkenes and alkynes are called unsaturated compounds because ________. they have fewer hydrogen atoms attached to the carbon chain than alkanes they have fewer carbon atoms than alkanes they have the maximum number of hydrogen atoms attached to each carbon in the compound they have more carbon atoms than alkanes they have more hydrogen atoms attached to the carbon chain than alkanes
Answer:
They have fewer hydrogen atoms attached to the carbon chain than alkanes
Explanation:
Let's compare ethane (an alkane) with ethene (an alkene) and ethyne (an alkyne):
Ethane's formula is C₂H₄, while ethene's is C₂H₄ and ethyne's C₂H₂.As you can see, alkenes and alkynes have fewer hydrogen atoms attached to the carbon chain due to them having multiple bonds between the carbon atoms.
log x + log y =1 and x+y=11
Answer:
When y=10,x=1 and when y=1,x=10
Explanation:
Log x + log y is the same as log (xy)
x+y=11
x=11-y
So,
log[(11-y)y]=1
log[11y-y^2]=1
The log is to base 10,therefore we can rewrite it in exponential form.
10^1=11y-y^2
y^2-11y+10=0
After solving it we obtain y=10,y=1
When y=10:
x=11-10=1
When y=1
x=11-1=10
Hope it helps:)
7. Assume that you have collected 867 L of nitrogen gas at STP. What is the mass of the nitrogen gas?
Answer:
1083.6 g
Explanation:
At STP, 1 mol of any given mass will occupy 22.4 L.
With the information above in mind we can calculate how many moles of nitrogen gas (N₂) are there in 867 L:
867 L ÷ 22.4 L/mol = 38.7 molFinally we convert 38.7 moles of N₂ into grams, using its molar mass:
38.7 mol * 28 g/mol = 1083.6 gPlease emergent help!!!!!
12 points!
Answer:
I think it should be the last option (researched)
Name the guy thats Speedrunning yt right now
Answer:
Lyric
Explanation:
My best guess
What is the composition of tungsten?
Answer:
90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron.
Explanation:
Heavy metal tungsten alloys are 90% to 97% pure tungsten in a matrix of nickel and copper or nickel and iron. The addition of these alloying elements improves both the ductility and machinability of these alloys over non-alloyed tungsten.
The person who answered your question is right, just commenting because otherwise the points would go to waste. Thank you and have a great day!
Define "mole in chemistry terms
Answer:
Can you please post a pictah.
Explanation:
Answer: A mole is defined as 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
What is the mass in grams of 2.00 10 5 atoms of naturally occurring neon
Answer:
2.00X10^5 x 20gNe/6.02x10^23=6.46x10^-18 but books answer is 797.
Explanation:
The mass is grams 2.00 x 10⁵ atoms of naturally occurring neon is 6.70 x 10⁻¹⁸g.
What is neon?Neon is a chemical element in the periodic table. Its atomic number is 10, and it is a Nobel gas. It is a colorless, monatomic, and odorless gas.
Mass is the quantity of matter in a physical body. It can be calculated by the volume and density of the element. The mass can be calculated by the number of atoms.
Given the number of atoms of Ne is 2.00 x 10⁵
The molar mass Ne = 20.18 g/mol
6.022 x 10²³ Ne atoms have a mass of 20.18 g.
The number of atoms is divided by the Avogadro number and the mass of the element.
2.00 x 10⁵ atoms Ne has mass = (2.00*10⁵) / (6.022*10²³) x 20.18 g =
6.70 x 10⁻¹⁸g.
Thus, the mass is grams 2.00 x 10⁵ atoms is 6.70 x 10⁻¹⁸g.
To learn more about neon, refer to the link:
https://brainly.com/question/5605139
#SPJ2
How much water needs to be added to 27.00 millilters of 1.500 M LiOH solution to make a 0.02000 M LiOH solution?
Answer:
3000000000000009000000
I don’t know how to do this, LIKE IT WAS NOT EVEN IN THE VIDEO :/
The formation of soap can be done with the process of saponification in which triglyceraldehyde reacts with 3 molecules of Sodium Hydroxide (NaOH) and produces Glycerol and 3 molecules of Sodium palmitate (Soap).
(Reaction is attached as image)
What is Saponification ?Saponification is a process that involves the conversion of fat, oil, or lipid, into soap and alcohol by the action of aqueous alkali.
Soaps are salts of fatty acids, which in turn are carboxylic acids with long carbon chains.
Hence, The formation of soap can be done with the process of saponification in which triglyceraldehyde reacts with 3 molecules of Sodium Hydroxide (NaOH) and produces Glycerol and 3 molecules of Sodium palmitate (Soap).
Learn more about Saponification here ;
https://brainly.com/question/2263502
#SPJ1
What happens in a chemical reaction?
А
Substances change in appearance but not in chemical composition.
B
Substances change from solid to liquid or gas.
с
Substances interact to form one or more new substances.
D
New atoms are created or destroyed.
Answer:
c seems like the best answer
A neutral atom with the electron configuration 2-7 would most likely form a bond with an atom having the configuration
Answer:
1s2 2s2
Explanation:
What types of medium(s) can sound travel
through?
solids
liquids
all of them
gasses
Explanation:
Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Temperature also affects the speed of sound. Gases: The speed of sound depends upon the properties of the medium it is passing through.
Answer:
all of them
Explanation:
As talking about sound,all of them are responsible for this.Sound can travel in three mediums but if differs according to speed as it travels fastest in solid,faster in liquid and slow in gases.
hope it helps u and keep smiling :)
molar mass (NH4)2SO4
Answer:
132.15
Explanation:
Molar mass N = 14.00
Molar mass H = 1.01
Molar mass H4 = 1.01 x 4 = 4.04
Molar mass NH4 = 14.00 + 4.04 = 18.04
Molar mass (NH4)2 = 18.04 x 2 = 36.08
Molar mass S = 32.07
Molar mass O = 16.00
Molar mass O4 = 16.00 x 4 = 64.00
Molar mass SO4 = 32.07 + 64.00 = 96.07
Molar mass (NH4)2SO4 = 36.08 + 96.07 = 132.14
When do we observe more than one broad band in the fluorescence spectrum?
8. What is the volume of 5.6 moles of carbon dioxide gas at STP?
Answer:
125.5 ×10^-3 m^3= 0.1255 m^3
Explanation:
Volume=5.6mol×22.414dm^3
=125.5dm^3
How many grams of NiNi are formed from 55.3 g55.3 g of Ni2O3Ni2O3?
2Ni2O3(s)⟶4Ni(s)+3O2(g)2Ni2O3(s)⟶4Ni(s)+3O2(g)
Step 1: Show the strategy for solving this problem.
You are currently in a labeling module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop.
grams Ni2O3⟶⟶⟶grams Nigrams Ni2O3⟶⟶⟶grams Ni
Answer Bank
grams O2O2
moles NiNi
grams NiNi
moles Ni2O3Ni2O3
moles O2O2
grams Ni2O3Ni2O3
Answer:
110.92 g
Explanation:
Amount of Ni2O3 consumed= 55.3/59 =0.94 moles
From the reaction equation;
2 moles of Ni2O3 yields 4 moles of Ni
0.94 moles yields 0.94 moles * 4/2
= 1.88 moles of Ni2O3
Mass of 1.88 moles of Ni2O3 = 1.88 moles of Ni2O3 * 59 gmol-1 = 110.92 g
Acetylene, C2H2 (also known as ethyne), is commonly used as a fuel for welding torches.
a. True
b. False
Answer:
True
Explanation:
Acetylene or Ethyne is the simples form of hydrocarbon with triple bond in it. It is the first member of alkyne series. It colorless, highly inflammable gas. This is why is used in oxy-acetylene torches used for welding and cutting materials. It is also used as raw material in synthesis of many organic chemicals and plastics.
So, the given statement is true.
which statement compares the strengths of electric forces between particles of matter?
A. Hydrogen bonds and metallic bonds are stronger than ionic bonds.
B. Van der Waals forces and hydrogen bonds are stronger than metallic bonds.
C. Ionic bonds and Van der Waals forces are stronger than metallic bonds.
D. Van der Waals forces and hydrogen bonds are weaker than metallic bonds.
Answer: A
Explanation: I quizzed
A balloon with a volume of 2.0 L is filled with gas at 3 atm. If the pressure is reduced to 1.5 atm without a change in temperature, what would be the new volume of the balloon?
Plzzzzzzzzzzzzzzzz help
Answer:
Your correct.
Explanation:
Answer:
The answer is C.
Explanation:
I just know.
The student then sets up two more test tubes containing iron nails.
Explain why
test tube 1 does not rust because boiled water has no oxygen and oil stops new oxygen from entering and without oxygen iron cannot rust.
test tube 2 does not rust because the drying agent absorbs all the moisture from air, and moisture is required for iron to rust.
In the absence of oxygen or moisture rusting of the nail can not take place.
There are two very important things that must be present for the process of rusting to take place these are;
Oxygen MoistureIf we can exclude these two, rusting will not take place in the absence of either of them.
Rusting does not occur in tube 1 because the water have been boiled and the oxygen removed then it is stored under oil that prevents corrosion.
In tube 2, there is a drying agent that removes moisture from air hence moisture does not have access to the nail so it does not rust.
Learn more about rusting: https://brainly.com/question/4206267