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Chemistry
High School
7. Put the following elements in order from smallest to largest atomic radius and explainwhy:C.0, Sn, Sr
Chemistry
College
If 1.50g lead(II) nitrate is reacted with 1.75g sodium chromate what is the theoretical yield of the precipitate?
Chemistry
College
calculate the volume (in mL) of 0.100 M CaCl2 needed to produce 1.00 g of CaCO3 (s). There is an excess of Na2CO3. Volume of calcium chloride in mL
Chemistry
Middle School
An object resting on top of a building has the most potential energy ....before it stops movingwhen it stopsobjects cannot have potential energybefore it stops moving
Chemistry
College
(b) Why must acidic gases be treated before they are released into the atmosphere?
Chemistry
College
neptune has an average distance to the sun of 30.06 au in two or more complete sentences explain how to calculate the orbital period of neptune
Chemistry
High School
changing the number of ___ gives an atom a neutral charge or causes it to take on a positive or negative charge. (pick on that best fits)a.) atomic massb.)atomic numberc.) protonsd.) ionse.)neutrons f.) neutralg.) electrons
Chemistry
College
Explain the effects distance and mass have on the gravitational pull of the planets.
Chemistry
High School
name any group 2 element in chemistry periodic table
Chemistry
College
Water (H 2 O) is made of
Chemistry
College
Which techniques would be best for separating a colloid mixture but would not work well with solutions? Check all that apply.A) distillationB) centrifugationC) boiling/heatingD) chromatographyE) crystallizationF) long standing
Chemistry
High School
a tennis ball travels the length of rhe court, 24 m, in 0.5 s. Find its average speed
Chemistry
College
a student has a 5.00 gram sample of calcium chloride (CaCl2) solid. how many miles of calcium chloride are contained in this sample
Chemistry
College
Human population growth in 2018 was 1.07% . If this rate of growth remains constant, in what year will the human population double?
Chemistry
College
An animal can ____.(A) only be prey or predator (B) be both prey and predator (C) choose to be prey or predator Thanks if u help / this is for science they just didnt have that
Chemistry
High School
please help explain Ohm's law
Chemistry
High School
explain Alexander Volta law
Chemistry
College
The goal of the Human Genome Project was to _____.locate specific genes that caused given diseasesidentify the RNA of the human genomepromote friendliness among the various sciencesmap the entire human genome
Chemistry
College
The relative humidity is 100%, and the temperature is hot. In a few sentences, explain how the weather would change if the temperature drops and becomes cool.
Chemistry
College
How many moles of SnO2 would need in order to produce 8.67 moles of Sn?
Chemistry
College
How many moles of H2 would be formed from 2.26 mol of HCI?Mg + _HCI _MgCl2 + H2
Chemistry
College
How many moles are in a solution if I have 2.21 M of NaCl in 1.14 L?A.1.12 molB.2.52 molC.4.15 molD.7.89 mol
Chemistry
High School
The muscle responsible for the majority of a particular movement is known as thea. prime moverb. synergist c. antagonistd. fixator
Chemistry
Middle School
Where does the rest of the energy lost go? (In food webs)
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