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Chemistry
Chemistry
High School
what is the Conversion of products into reactants
Chemistry
College
Which is better Epoxy or Super Glue?
Chemistry
Middle School
Take a closer look at Arica, Chileclimograph and the Ocean current map. What can you tell about the seasons and the corresponding months? How is this related to the hemisphere in which Arica is located?
Chemistry
High School
Difference between Laboratory Thermometer and Clinical Thermometer.
Chemistry
High School
Which description is not a property of an acid?1. Slimy feel2. Corrosive3. Sour taste4. Dissolves metals
Chemistry
High School
Which of the following is true for the percentage yield of a reaction? . It is the combined yield from the excess reactant and the limiting reactant. B. It is the calculated yield of the product based on stoichiometry alone. C. It is calculated based on stoichiometry as well as experimentation. D. It is the yield of the product from the limiting reactant alone.
Chemistry
High School
Help this is due today!!!
Chemistry
High School
28) what is the number of oxygen atoms in the formula unit of Ca3(PO4)2?
Chemistry
High School
The chemical equation below shows the burning of magnesium (Mg) with oxygen (O2) to form magnesium oxide (MgO). 2Mg O2 Right arrow. 2MgO The molar mass of O2 is 32. 0 g/mol. What mass, in grams, of O2 is required to react completely with 4. 00 mol of Mg? 2. 00 64. 0 128 256.
Chemistry
High School
The electron configuration of a cation with a 2+ charge is shown below.1s22s22p63s23p6What is the electron configuration for the ion's neutral parent atom? The atom is a main groupelement. Name the group that the parent atom likely belongs to on the Periodic Table and identifyone chemical property of the parent atom.
Chemistry
High School
Given the speed of light as 3.00 x 10 m/s, calculate thewavelength of the electromagnetic radiation whose frequencyis 9.500 x 101 Hz.
Chemistry
High School
URGENT PLEASE HELPWhat most likely happens when a sodium atom comes near an atom having seven valence electrons?
Chemistry
College
If the concentration of KMnO4 was 0.0235 M, calculate the number of moles of MnO4- ions that completely reacted with the H2C2O4
Chemistry
High School
All three types of rock form in which earth layer?
Chemistry
College
What holds the nucleus together? Group of answer choices alpha particles strong forces electrical forces between the protons beta particles
Chemistry
High School
What are some advantages to the use of hydrokinetic energy? What might be some disadvantages?.
Chemistry
College
10 ml of solution of acetic acid is added to 250 ml volumetric flask , the concentration of diluted vinegar is 0.01 M. What is the % by mass of acetic acid in vinegar if the density of vinegar is 1.05 g/ml. ( C: 12 O:16 H: 1 )
Chemistry
College
If the adoms dont work are they dead
Chemistry
Middle School
*Name three ways the organisms in a food web get energy.*What are some ways the organisms in a food web use energy?*What are some ways individual cells in an organism use energy?*What do you have in common with other living things in a food web?
Chemistry
College
9 Select the correct answer. Which statement correctly describes a physical change? O A involves breaking and creating chemical bonds but not changing a phase OB. may involve a change in phase but does not involve a change in the molecular structure OC. may involve converting two or more substances into new substances OD. involves changes at the molecular level O E. involves energy transfer and change in color Reset Next
Chemistry
High School
2KClO3 > 2KCl2+ 3O2 true if balanced or false if notreaction type 1: synthesis, 2: decomposition, 3: single replacement, 4: double replacement, 5: combustion
Chemistry
High School
250 mL of argon gas is held in a flexible vessel shown above. Ifthe pressure changes to 12.0 atm, what is the new volume ofthe gas at 20C?
Chemistry
High School
The electron-domain geometry of a sulfur-centered compound is trigonal bipyramidal. The hybridization of the central sulfur atom is ________.
Chemistry
High School
which of the following contains a covalent bond?A) BeOB) LiCIC) CND) MgO
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