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Chemistry
Chemistry
High School
A balloon is a sphere with a radius of 5.0 m. The force of air against the walls of the balloon is 45 N.What is the air pressure inside the balloon?Surface area = 12.56 radius1 Pa = 1 N/mHow would one solve this? What is an easy way to remember how to solve this problem or a list of steps to solve?
Chemistry
High School
what is percipatation
Chemistry
College
How is light emitted
Chemistry
High School
Is the freezing point of this 5??Please correct my mistake if it isn't.
Chemistry
College
Which of the following substances will dissolve in water? Check all that apply.Magnesium SulfateMethaneButaneSodium nitrate
Chemistry
High School
Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape?O They both contain three lone pairs of electrons around the central atom.O They both contain three atoms around the central atom.O The central atom of the trigonal planar molecule has two lone pairs around it, but the central atom of the trigonalpyramidal molecule has only one.O The central atom of the trigonal planar molecule has two atoms around it, but the central atom of the trigonalpyramidal molecule has only one.
Chemistry
College
Calcium reacts with oxygen to make calcium oxide, CaO. What is the theoretical yield (g) of CaO(s) that could be prepared from 7.75 g of Ca(s) and 2.44 g of O2(g)
Chemistry
High School
In a chemical change, the same atoms are recombined into a new substances,TrueOr False
Chemistry
High School
the amplitude of a wave is measured from A. Trough to trough B. Crest to resting positionC. Crest to crestD. Crest to trough
Chemistry
College
How many grams of Al are needed to react with 91.8 grams of FeO 3FeO + 2Al > 3 Fe +Al2O3
Chemistry
High School
CHa. resonanceb. no resonance
Chemistry
High School
Please help!!!!!!!!! ASAP!!!
Chemistry
High School
Explain the difference between potential energy and kinetic energy.Sentence Starters"Potential Energy is. . ""Kinetic Energy is. . ""The difference between potential energy and kinetic energy is. . ."
Chemistry
College
If the reaction yield is 88.2%,what mass in grams of hydrogen is produced by the reaction of 7.73 g of magnesium with 1.31 g of water Mg + 2h2o >>mg(oh)2+h2
Chemistry
College
Which part of a flower can make eggs
Chemistry
High School
What is a polar molecule?A. A molecule with symmetrical polar covalent bondsB. A molecule with symmetrical nonpolar covalent bonds C. A molecule with a negative pole and a positive poleD. A molecule with two atoms of the same electronegativity
Chemistry
College
i need help please help me now please
Chemistry
College
Which elements is the most reactive on this table?
Chemistry
College
The force of 20 N acts upon a 5kg block. What is the acceleration of the block?100 m/s/s4 m/s/sO 25 m/s/sO 0.25 m/s/s
Chemistry
Middle School
What two objects transmit light?
Chemistry
High School
You are an employee at "cash for gold" and a customer comes in looking to exchange gold for money. They claim to have 3.47 gram nugget of fold. How many particles (atoms) of gold are in one nugget? With work shown
Chemistry
High School
The number of electrons in the first three energy levels for four neutral elements is shown in the table. The element with the highest ionization energy is-
Chemistry
High School
Is this a chemical reaction? Explain your reasoning. (Will give brainliest)
Chemistry
High School
Convert this mass to SI Unit: 2000g
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