Answer:
Vanillin consists of molecules. The attraction between particles of silver iodide is stronger than the attraction between particles of vanillin.
The silver iodide a compound used in photography because,
It affected by light.It is easily stick on the surface of photographic plate or film.Why melting point of silver iodide has higher melting point than vanillin?The ionic compound is strong than covalent compound .So, ionic compound require more energy as compare to covalent compound to break their bond between them. So, melting point of ionic compound is higher than covalent compound .Since, silver iodide is ionic compound and vanillin covalent compound.Therefore, melting point of silver iodide is higher than vanillin.learn about melting point,
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Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, simply write only NR.
Answer:
see explanation
Explanation:
Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, simply write only NR.
Ag (+1) + NO3(-1) + 2 Na(+1) + Co3 (-2)--> Ag2CO3 (s) + 2 Na (+1) + 2NO3(-1)
All the organisms alive today arose from preexisting organisms.
O True
O False
Organisms often die with a little time. They make new oragnisms which then carry on their legacy.
Which of the following forms of alcohol can be consumed? A. Propanol B. Methanol C. Butanol D. Ethanol Please select the best answer from the choices provided. A B C D.
Answer:
D. Ethanol
Explanation:
because Propanol, Methanol and Butanol are not safe to consume. soo the answer is Ethanol
Ethanol forms of alcohol can be consumed.
What is ethanol?Ethanol is used in the manufacture of medication, plastics, lacquers, polishes, plasticizers, and cosmetics. Ethanol is used in medicinal drugs as a topical antiinfective, and as an antidote for ethylene glycol or methanol overdose.Industrial merchandise containing ethanol include beverages, perfumes, aftershaves and colognes, medicinal liquids, mouthwashes, liniments, and a few rubbing alcohols.within the worst cases, there will also be breathing issues, low blood strain, incontinence heart issues, blood issues, liver damage, and demise. Ethanol may also dry out and irritate the pores and skin; there may be aches, redness, and swelling. Eye exposure to ethanol can also cause tearing, burning, and stinging.Learn more about ethanol here:-https://brainly.com/question/5750283
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What is the periodic table?
Answer:
The periodic table, also known as the periodic table of chemical elements, is a tabular display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.
Explanation:
The periodic table is a tabular arrangement of chemical elements that classifies elements according to repeating qualities and is structured by increasing atomic number. Metals are located on the left side of the table, whereas nonmetals are located on the right. The columns are referred to as groupings.
in pic
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(Hope this helps can I pls have brainlist (crown)
9. Which of Earth’s sphere consists of all living things? A. hydrosphere B. geosphere C. biosphere
Answer:
i think its b
Explanation:
i took it
Nicole pushes her bike up a hill. Overhead, the sun exerts a gravitational force on Earth. Which statement is true about the bike and Earth?
They both experience contact forces.
They both experience non-contact forces.
The bike experiences a non-contact force and Earth experiences a contact force.
The bike experiences a contact force and Earth experiences a non-contact force.
Answer: c
Explanation:
When Newton started studying gravity, the concept of gravity was already in place.
A. True
B. False
can someone help me with this question!!
Answer:
A Because sodium chloride can break down the table sugar
Explanation:
hi
When a glucose molecule loses a hydrogen atom in an oxidation-reduction reaction, the glucose molecule is ________
Answer:
Important
Explanation:
Which type of electromagnetic radiation had a lower frequency than infrared radiation
Answer:
Radio waves
Explanation:
Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
At what point on a heating curve graph does a phase change occur?
at each plateau
at the first plateau
at each slope
at the last slope
Answer:
Electrical Bonding Investigation Data Quick Check
Explanation:
B. Heat energy is added to the substance, weakening the electrica attraction between molecules.
C. Both the melting point and boiling point are lower
C. The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a particle negative charge, while the hydrogen atom have particle positive charges
D. Phase change
C. At each plateau
You want to build a deck off your kitchen and you estimate that you will need 3000 #8 nails all together. Rather than pay extra for them to be put in little boxes, you go to a hardware store where they sell nails in bulk. How does the sales clerk count out 3000 #8 nails for you?
Answer:
The sales clerk can count your nails in 6 groups of 500 nails, or 30 groups of 100 nails to ease the counting process and garauntee a more accurate result.
Explanation:
what is an element? (name ten elements and write their symbols) (name the elements that make up proteins, fats and carbohydrate)
I really hope this helped!
An element is the basic unit of things.
10 elements:
Iron (Fe)Oxygen (O)Bismuth (Bi)Lead (Pb)Boron (B)Helium (He)Hydrogen (H)Neon (Ne)Tin (Sn)Zinc (Zn)Elements that make up proteins:
Carbon (C)Hydrogen (H)Oxygen (O)Nitrogen (N)Sulfur (S)Elements that make up fats:
carbon (C)hydrogen (H)oxygen (O)Elements that make up carbohydrate: (before any oxidation or reduction)
carbon (C) hydrogen (H)oxygen (O)please help me
Type the correct answer in the box. Spell all words correctly.
What does Dalton's atomic theory propose?
A ______ causes rearrangement of atoms.
Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help
5. How could you use Kepler's 3rd Law to find the relationship between all of the
moons of Jupiter?
Answer:
essentially through the use of keplers 3rd law comparing the proportionality of a planets squared versus cubed orbital patterns you can determine how fast a planet will orbit something and complete a full orbit
Explanation:
Kepler's Third Law: the squares of the orbital periods of the planets are directly proportional to the cubes of the semi-major axes of their orbits. Kepler's Third Law implies that the period for a planet to orbit the Sun increases rapidly with the radius of its orbit. (from NASA)
Why does scientists use atomic watch?
Answer:
atomic watch
Explanation:
it is used for the measurement of time.
A gas measures 140 mL at 400 K find its volume at 120 K if the pressure remains constant.
By applying Charles law, the final volume of the gas is equal to 42 mL.
Given the following data:
Initial volume = 140 mLInitial temperature = 400 KFinal temperature = 120 KTo find the final volume of the gas, we would apply Charles law:
Charles law states that when the pressure of an ideal gas is kept constant, the volume of the gas is indirectly proportional to the absolute temperature of the gas.
Mathematically, Charles law is given by the formula;
[tex]\frac{V}{T} =k\\\\\frac{V_1}{T_1} = \frac{V_2}{T_2}[/tex]
Where;
T is the temperature of an ideal gas.V is the volume of an ideal gas.Substituting the given parameters into the formula, we have;
[tex]\frac{140}{400} = \frac{V_2}{120} \\\\140 \times 120 = 400V_2\\\\16800 = 400V_2\\\\V_2 = \frac{16800}{400}[/tex]
Final volume = 42 mL.
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what year did ernest rutherford make his discovery
Answer:
May, 1911: Rutherford and the Discovery of the Atomic Nucleus.
Explanation:
Mark me brainly please.
Kinetic energy is described as
Question 1 options:
Movement
Decreasing energy
Stored energy
Elastic
Answer:
its the movement because kinetic energy means moving not stopping or decreasing
Explanation:
why does it make sense for the valence electrons to increase going across a period?
Why isn’t a dream made of matter?
Please count compound list each element and the amount of each and then figure out the total of the atoms
NEED ANSWER ASAP
Answer:
Carbon: 18, Hydrogen: 16, Oxygen: 8
Explanation:
Total # of atoms = 42
Organic
What mass of KBr (in grams) do you need to make 250. 0 mL of a 1. 50 MKBr solution?.
Answer:
KBr final solution:
V = 250mL --> 0.25L
Concentration/Molarity = 1.5 mol/L
To find the amount of moles of KBr here, just multiply the volume by the concentration (0.25 x 1.5 = 0.375 mol)
So the amount of moles for KBr is 0.375 mol. Now we know that the mass divided by the molar mass (the atomic mass values of K and Br in the periodic table added together) would give us the amount of moles aswell.
n = moles
m = mass
M = molar mass
n = m/M
so if we rearrange this equation to find mass, we would get:
m = n x M
Molar mass for KBr: (39.09) of K + (79.90) of Br = 118.99
m = 0.375 mol x 118.99
m = 44.62g
Therefore 44.62g of KBr is needed to make 250mL of a 1.5 M KBr solution.
Pls help me!! Explain how the N:Z ratio can help predict the type of radiation Zr-85 and Zr-95 emit.
No links pls
Based on N:Z ratio, Zr-85 is expected to decay by positron emission. Zr-95 is expected to emit beta particles in a beta decay.
The N:Z ratio determines the stability of a nucleus. If a nucleus has N:Z ratio >1.5 or <1.0, such a nucleus is unstable and will undergo radioactive decay. The aim of such a decay is to attain a favorable N:Z ratio.
For Zr -85, the N:Z ratio is 1.1 while the N:Z ratio of Zr-95 is 1.4. Zr -85 is expected to decay by positron emission which increases the N:Z ratio. For Zr-95, the nucleus tends to undergo processes that decrease the N:Z ratio such as beta emission.
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A 1,100 kg car comes uniformly to a stop. If the vehicle is accelerating at 2 1.2 m/s , which
force is closest to the net force acting on the vehicle?
F 9,600 N
G 1,300 N
H 900 N
J 94 N
a substance that cannot be broken down into simpler substances
Elements are pure substances that cannot be broken down into simpler substances by ordinary chemical means.
( i will give you brainliest who ever answers the question first and the right answer!!!)
What do you predict would happen if you brought a negatively charged balloon next to an uncharged piece of paper?
A. The balloon will attract the paper.
B. The balloon will repel the paper.
C. Nothing will happen.
D. The paper will repel the balloon.
Answer: A
Explanation:
Answer:
B. The ballon will repel the paper
Which two statements are true for both compounds and mixtures?
A. They are made up of more than one type of atom.
B. Their particles all have the same chemical formula.
O C. They can be separated into two or more elements.
D. Their particles are held together by chemical bonds.
Answer:
B and C is your best option
BRAINLIST ???
Please help! Its due now!
Answer:
PARTICLES!
I hope I was on time! Cheers! :^)