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Chemistry
Chemistry
High School
Assuming that a strong acid and a weak acid are both equal concentrations, which would be expected to have the higher standard enthalpy change when neutralized with a strong base?.
Chemistry
College
Is there any limit to the distance through which diffusion can occur?
Chemistry
High School
A piece of copper wire contains 5 moles of copper atoms. Whats is its mass ( the molecular mass of copper is 63.5 g/mol)
Chemistry
College
Starting with the following equation,FeO(s) + Al(s) Fe(l) + AlO(s)calculate the moles of FeO that will be required to produce 645 grams of Fe.Where do i start and how do I calculate? Need help please
Chemistry
College
How does the availability of WATER affect the growth of plants and animals?
Chemistry
College
Why is KMnO4 regarded as a secondary standard solution ?
Chemistry
College
Compare the reactivity of the alkali metals family with the reactivity of thehalogen family. (2 points)
Chemistry
College
Please help with this
Chemistry
College
Determine the empirical formula for each of the following compounds:19% tin and 81% iodine
Chemistry
High School
What is the atomic number of the atom shown?
Chemistry
High School
Question 19 of 29Question 1-19Submit TestU-ScierWhich of the following characteristics does not depend on the amount of the sample?O MassO DensityO Heat contentO Volume
Chemistry
College
What is the total moles of particles in 3.0 L of each of the following solutionhalf-normal NaCl , 0.40 % (m/v) , used to provide electrolytesExpress your answer using two significant figures.
Chemistry
High School
a bicycle pump contains 0.650 L of helium at 101 kpa. if the pump is closed, what pressure is required to change the volume to 0.250 L?please i need an immediate answer
Chemistry
Middle School
In a solid, the molecules are held together _____________ in their position.A. TightlyB. LooselyC. FreelyD Gently(is it tightly or gently??)ik this is easy but can't decide
Chemistry
College
1. For the reaction CO(g) + NO(g) CO(g) + NO(g), a CO concentration of 0.040moles/liter was measures at 2 seconds. What was the average reaction ratefor this reaction? (Please note that at t = 0, no CO was present.)
Chemistry
College
Calculate % concentration of of solution prepared by dissolving 8.5 g of glucose (C6H1206) in 35 g of water24 %none of the other answers are correct1.35 %20.%4.1 %
Chemistry
College
2.Consider the relationship between the temperature and pressure of a gas, when the volume is held constant. Is the relationship directly proportional or indirectly proportional? 3.Which gas law does this demonstrate?
Chemistry
High School
What determines a substance's State??a. the size of its particlesb. the amount of Substancec. the speed of its particles and the attraction between themd.the chemical energy that the Substance has
Chemistry
High School
an unknown compound contains only c , h , and o . combustion of 3.50 g of this compound produced 6.99 g co2 and 2.86 g h2o . what is the empirical formula of the unknown compound? insert subscripts as needed.
Chemistry
College
2. What is the percent sulfur in iron (III) sulfate?
Chemistry
College
The reaction HCl(1) + HO(1) H30(aq) + Cl(aq) can be abbreviated as HCI H+ + CI.How is this apparently important omission justified?A)It's understood that H+ doesn't exist on its own in water, and H30(aq) + Cl(aq)are both aqueous.B) It's generally understood that H3O+ is a hypothetical intermediary.OC) Because water isn't important to the reactionD) It isn't justified, and the abbreviation is an error.
Chemistry
High School
One beaker contains a single compound, another an element, another a heterogeneous mixture, and another a homogeneous mixture. Which beaker's content's are a single compound?
Chemistry
College
im confused help me please
Chemistry
High School
How can the Swartz process be modified to work for bacteria?
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