Answers
Answer:
6 b physical properties
7b melting point
8 boiling
Related Questions
What is the best way to statically charge an object,
Answers
Answer:Static electricity can be created by rubbing one object against another object.
Explanation: This is because the rubbing releases negative charges, called electrons, which can build up on one object to produce a static charge
Convert 300K to degrees Celsius.
Answers
help plz 8th grade science
Answers
Answer:
B
Explanation:
Brainlest is apprciatedddddddddddd
How much force is required to accelerate a 22 kg mass at 6 m/s2?s
Answers
Answer:
F=132k.gm/s^2Explanation:
F=m×af=22k.g×6m/s^2f=132k.gm/s^2Can someone help me please
Answers
How many moles of Iron (II) oxide are present in a 34.5 gram sample?
Answers
Answer:
0.609 Is the answer.
Explanation:
I hope this helped
Which radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time?
Pu-239
FR-229
Fe-53
P-32
Answers
Answer:pu-239
Explanation:
Pu-239 is regarded as the radioisotope requires long-term storage as the method of disposal, to protect living things from radiation exposure over time
Disposal of radioactive nuclear waste is often regarded as a problem.
The waste sources are:
Nuclear power reactors Bomb-related nuclear materialDisposal of bomb-grade plutonium is often difficult.
The longer lived isotopes are:
Plutonium-239 whose t1/2 is 24,110 years, Plutonium-240 whose t1/2 is 6,540 years, Curium-245 whose t1/2 is 8,500 years. etc.The storage of the longer lived elements is through containment for the next several thousand of years.
The control or management of radioactive waste is a hard, multifaceted procedure.
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Which statement is true about energy? A. Energy never moves. B. Energy is never destroyed. C. Energy always changes to heat. D. Energy always changes to light.
Answers
This is stated in the Law of Conservation of Energy.
Answer: energy is never moves
Explanation:
Marcus wants to use two objects to compare the sizes of a proton and an electron. If he uses a basketball for a proton, which object would best represent an electron?
A
a pea
B
a bowling ball
C
a soccer ball
D
a beach ball
Answers
Answer:
A
Explanation:
How many grams of potassium chloride are in 4.25 x 1023 molecules?
Answers
Do a quick conversion: 1 moles Potassium Chloride = 74.5513 gram using the molecular weight calculator and the molar mass of KCl.
The sample of oxygen which represents the greatest mass is
A.) mole
B.) gram
C.) molecule
D.) liter
Answers
Answer:
A
Explanation:
A sorry if not correct
A hydrochloric acid solution contains 36 percent HCl by mass. Calculate its
molality
Answers
M=moles of solution / kilograms of solvent
Mass %= (mass solute/mass solution)x100%
Assume 100g of solution
Find moles of solute
Mass solute = (mass %/100%)mass solution
=(36%/100)100g=36 gHCL
36 gHCL 1 mol HCL/36.458 gHCL= 0.987molHCL
36% HCL by mass 100 g solution
36g HCL 0.987Mol HCL
Molarity=moles solute/kg solvent
Find kg solvent
Mass solution = mass solute + mass solvent
Mass solvent = mass solution - mass solute
= 100 g-36=64 g solvent
64 g solvent = 1 kg solvent/1000 g solvent = 0,064 kg solute
Molarity= molHCL/0.064 kg solvent
=0.987/0.064
=15.42 mHCL
A low ph scale would indicate that the water is A. Neutral B. Basic C. Acidic
Answers
where are chemicals found?
A.) only in liquids
B.) only in air
C.) in solids,liquids, and gases
D.) only in powders
Answers
Answer: c
Explanation: pretty sure its c :]
- What is the percent yield if your actual yield is 39.78g and your theoretical
yield was 47.84 g?
Answers
How many valence electrons are there in Se atom?
Answers
Answer:
4 valence electrons
Despite the fact that the word silicon has a ubiquitous affiliation with all things electronic, Si itself is not a good electrical conductor. It has 4 valence electrons, meaning that filling its outer shell it can form a very strong lattice with 4 neighboring Si atoms-with no un-bonded electrons remaining
Answer:
The numer of valence electrons is defined as the number of electrons present in the outer most shell of the atom.So, in the case if selenium, there are 6.
Give an example of a decomposer, and explain what would happen if decomposers were absent from a forest ecosystem. Provide evidence to support your claim and explain your reasoning
Answers
Answer: Bacteria, some insects, and fungal species are the decomposers of the dead and decaying matter.
Explanation:
The decomposers are the organisms which act and feed on the dead and decaying organic matter so as to obtain energy from it and degrade it to the simple forms that can be utilized by the plants. Bacteria, some insects and fungi that live in the soil and on the decaying matter. The fungi for example decay on the lignin present in the wood so helps in wood decomposition of trees. If the decomposer like fungi are absent the wood mass will not decompose and it will remain as waste and can be used by the plants in the form of nutrients.
PLEASE HELP!
The chemical formula of a compound provides information about the elements present in the compound and their ____
ratios. A) grams B) ratio C) mole D) empirical
Answers
Answer:
C. Mole
Explanation:
Chemical formula deals with mole number
what are particles that differ in number between isotopes
Answers
Answer:
Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
does carbon dissolve in water
Answers
Answer:
yes
Explanation:
CO2 is soluble because water molecules are attracted to these polar areas. The bond between carbon
What is the molar mass of Zn(NO3)2 ?
Answers
Answer:
molar mass of zn( no3) 2
is 189.36 g/ mol
What is the mass of 3.25 moles of sodium hydroxide (NaOH)?
Answers
Answer:
1 mole is equal to 1 moles NaOH, or 39.99711 grams.
Explanation:
Hope this helps have a nice day :)
The statement of the mass of sodium hydroxide (NaOH) is "130 g."
What is mass?A substance is something to do with mass that takes up space. The mass of a compound is the total amount of atoms present in grams that make up a molecule. The grams is the unit of mass.
In order to determine the mass in grams, multiply moles of the substance value by its molar mass to convert moles into grams.
Mole to gram conversion factor,
[tex]=\;given \;mole\;.\;\frac{grams}{1\;mol}[/tex]
Mass of NaOH comes out to be,
[tex]=\;3.25\;mol\;.\;\frac{39.997\;g}{1\;mol}[/tex]
= 129.99 g
= 130 g
Hence the correct answer is 130 g.
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Na2SO4(aq) + CaCl2(aq) --> CaSO4(s) +
2NaCl(aq) is an example of which type of
reaction?
decomposition
synthesis
single replacement
double replacement
Answers
Answer:
double replacement
Explanation:
if you are curious at to why so many of ur family members have certain hair or eye color, you might want to look at... A. Astrology... B. A family tree... C. Heredity... D.Geometry
Answers
Answer:
c) hereditary
Explanation:
This means that if your parents had one eye colour, you'll most likely have the same one because you share the same genes, and it's passed down to you.
PLEASE HELP ME ON THIS QUESTION ASAP!!!!
Answers
Answer:
To support the body, protect the organs, produce blood cells, and store calcium.
what's a vacuum exactly
Answers
Answer:
Vacuum: space in which there is no matter or in which the pressure is so low that any particles in the space do not affect any processes being carried on there It is a condition well below normal atmospheric pressure and is measured in units of pressure (the pascal).-the internet gave me this answer so..
Explanation:
hope this helps :)
does all Newton's laws work together
Answers
A closed flask contains gas at STP. If the temperature is raised to 400 K what will the pressure be in atm?
Answers
Answer:
The answer is 1.5 atm
Explanation:
the structure of cyclopentane-1,2-diol
Answers
Answer: five carbon atoms forms a ring. In adjacent two carbon atoms
An hydroxyl group (-OH) is attached. Molecular formula is
C5H8(OH)2
Explanation:
A container of nitrogen gashas a pressure of 256.4mm Hg at 362K. If the temperature is decreased to 251K, what is the pressure of the gas in the container?Circle the Correct Answer: (106mmHg or 178mmHg)