Answer:
There are no units with electro negativity. Linus Pauling designed a scale of electro negativity that ranks elements with respect to each other. So, for example, fluorine is a 4.0 in comparison to 0.7 for francium.
Explanation:
solve for x . 4x-300=-8×
Answer:
4x+8x=30
12x=300
x=300/12
x=25
what is the chemical formula of (Sodium hydroxide ) ??
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what is the chemical formula of (Sodium hydroxide ) ??
⚘ NaOHSodium hydroxide, Sodium oxidanide[tex] \: [/tex]
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Answer:
The formula of Sodinm hydroxide is NaOH
Hope it helps
what is a cavity in your own words
Answer:
A cavity is a hole in a tooth that develops from tooth decay Cavities are permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes .They are caused by a combination of factors, including bacteria in your mouth, frequent snacking, sipping sugary drinks and not cleaning your teeth well.
these are in my own words
1. A substance with 1 or 2 electrons in the valence shell is called what?
A. Insulator
B. Conductor
C. Molecule
D. Semiconductor
Answer:
B. Conductor
Explanation:
You are going to heat up some soup. The first thing you need to do is turn off the natural-gas (methane) stove. When you ignite a natural-gas stove, methane (CH4) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water vapor (H2O).
Required:
a. Write a balanced equation for this reaction. Be sure to show your work.
b. What type of reaction is this? Describe the common reactants and products for this type of reaction.
Answer:
CH4 + 2O2 --> CO2 2H2O, Combustion Reaction
Explanation:
How many centimeters are there in 5.44 meters?
Answer:
544 cm!
I hope this helped.
Answer:
The answer of your question is 544 cm
Explanation:
5.44 × 100
544 cm
An ion is formed by either
Explanation:
By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion. When an ion is formed, the number of protons does not change.
Answer:
Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions.
Explanation:
by combination of ions with other particles; or by rupture of a covalent bond between two atoms in such a way that both of the electrons of the bond are left in association with one of the formerly bonded atoms. Examples of these processes include the reaction of a sodium atom with a chlorine atom to form a sodium cation and a chloride anion; the addition of a hydrogen cation to an ammonia molecule to form an ammonium cation; and the dissociation of a water molecule to form a hydrogen cation and a hydroxide anion.
Name the type of reaction illustrated
Answer:
It is a reversible esterification reaction.
Explanation:
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What's the difference between science and science methods?
Answer:
Science is related only to sense-experience, and reason based on the former. It is an accumulation of systematic and verifiable knowledge. The scientific method is one and the same in all branches of knowledge. The unity of science, according to him, consists in its method, not in its material alone.
Explanation:
What is the volume of 12.0 gof a liquid with a density of 1.37 g/mL?
Explaining or interpreting the things you observe based on reasoning from what you already know is called a. observing. c. predicting. b. inferring. d. classifying.
Answer:
B. inferring
Explanation:
If the PH is 5.85.how do I calculate for an acid ?[H^+]
Answer:
if its under 7 then it's an acid you neek over 7 is alkaline
Where are the metals located on the periodic table? the nonmetals?
Answer:
The metals are located on the left and the non-metals are located on the right.
Explanation:
Hope this helps :)
a 2.00 mL sample of a substance A has a density of 18.4g/mL and a 5.00 mL sample of substance B has a density of 35.5g/mL. do you have an equal mass of substances A and b?
this question made my brain hurt. please explain :(
Answer:
no
Explanation:
make use of this formula to find the mass of each sample.
m=density*volume
PLS HELP Quick!!!!!!!!!
Answer:
Bailee is incorrect. The mass of objects stay the same but the weight will change.
Explanation:
Mass is how much space something takes up, so that wouldn't change on the moon. The weight however would change because the gravitational pull on the earth is different from that on the moon.
I hope this helps!
Bailee explained that when traveling to the moon. The statement of Bailee is incorrect. The mass of the objects stays the same, but the weight will change. The correct option is B.
What is gravity?Gravity is a force that pulls all objects towards itself. It is present on the earth and in the galaxy. Gravity is the cause of all planets, and the sun and the moon stay in their own places.
The weight of items on the moon is equal to their weight on Earth, according to Bailee, thus he needs only bring a small amount of luggage. The mass is the quantity of matter. The mass never changes, only the weight changes of an object when they are on different planets.
Thus, the correct option is B. The mass of the objects stays the same, but the weight will change.
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4-hydroxyl and 5- hydroxyl aldehydes exist primarily as a cyclic hemiacetals.draw the structures formed from 4-hydroxyl butanal
A biochemist carefully measures the molarity of glucose in of cell growth medium to be . Unfortunately, a careless graduate student forgets to cover the container of growth medium and a substantial amount of the solvent evaporates. The volume of the cell growth medium falls to . Calculate the new molarity of glucose in the cell growth medium. Round each of your answers to significant digits.
What is the Ka expression for HCO3 ?
examps of sources of primary pollutants
Answer:
Primary pollutants can be emitted from many sources including cars, coal-fired power plants, natural gas power plants, biomass burning, natural forest fires, volcanoes, and many more. The effects of primary pollutants are of concern as they can be harmful to humans, animals and plants.Sep 3, 2018
Explanation:
A primary source results from the direct emissions from an air pollution source. In contrast, a secondary source results from the formation of a pollutant in the atmosphere from the chemical reaction of precursors emitted from air pollution sources.
The unknown metal ion gave a yellow/orange flame test and no precipitate with ammonium carbonate. What is the unknown metal?
Answer:
Sodium
Explanation:
What is the voltage for the equation CuCl2+Zn—> ZnCl2+Cu?
The standard voltage for the equation CuCl₂ + Zn —> ZnCl₂ + Cu is -1.1 Vol.
What is voltage?
Voltage is the pressure of the charged electrons in an electric circuit which pushes the electrons towards the switch, which makes the light illuminate. By Ohm's law, voltage is equal to current x resistance.
V = IR
The reaction is CuCl₂ + Zn —> ZnCl₂ + Cu, which means it is a dry cell battery, where the anode, zinc reacts with chloride that is the cathode. In the dry battery cell, the chemical energy is stored in it, which converts into electrical energy.
The voltage will be minimum, which is -1.1. The liquid battery cells or the electric fittings in our house contain high voltages because it gets direct current, but dry battery cells contain minimum amount of voltage and it is used to operate small objects.
Thus, the standard voltage will be -1.1 Vol.
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Please help me thank you
Explanation:
increases then decreases
4(a) Why doesn't the water flow out when the hand that presses the cardboard is removed? *
1. water inside glass is lighter
2. there is much water inside the glass
3. cardboard is supported by air pressure
4.
cardboard is strong enough to hold the water
9. SI base units used in chemistry include
A. kilograms, liters, inches, and moles.
B. pounds, gallons, moles, and Fahrenheit.
C. kilograms, seconds, moles, and Kelvin.
D. pounds, gallons, moles, and Celsius.
Answer:
C. kilograms, seconds, moles, and Kelvin
Pls help 10 points
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a substance made up of similar atoms
Answer:
A pure substance composed of the same type of atom throughout. Compound: A substance made of two or more elements that are chemically combined in fixed amounts.
How many molecules are their in o.5 mole of H2o
Answer:
There are 6.022x10^23 molecules
If squares represent carbon and spheres represent chlorine make a representation of liquid CCl4
Answer:
Look in explanation
Explanation:
I have shown the Lewis diagram as well as the square and sphere representation.
True or False
A sphere is a group of parts that work together as a whole.
False is the correct answer.
Which of the following is more soluble in water, methanol (CH3OH), or CH2I2(l).
Answer:
CH3OH
Explanation:
has hydroxide ions
Solubility has been the property of the substance to get dissolved to form the solution. Methanol (CH₃OH) is more soluble in water than Diiodomethane (CH₂I₂).
What is solubility?Solubility is best defined as the capability of the substance to get dissolved or dissociated into a solvent for the formation of the solution at a given temperature. The solubility of the various substances varies and is an important part of the mixture and solution.
Solubility in water has been the measure of the solute to get dissolved in water. The pressure and the temperature of the system directly affect the solubility of any substance in a solvent. Water is a polar molecule with hydrogen bonds in a great solvent that dissolves almost all the molecules like salt, sugar, etc.
Methanol is soluble in water as it contains hydrogen bonds as the intermolecular forces that interact with the polar water molecule by the virtue of the hydroxide and the hydrogen ions that show the molecular attraction and allows the molecule to get dissolved.
Therefore, methanol is soluble in water.
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