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Chemistry

Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.

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Q: For the following reaction grams of nitrogen monoxide are mixed with excess oxygen gas . The reaction yields grams of nitrogen dioxide .What is the theoretical yield of nitrogen dioxide grams What
1 answer
Q: Jayne's science teacher mixed a clear liquid with a blue liquid in a beaker. After a few minutes there was a white solid at the bottom of the beaker. What is most likely true about the white solid
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Q: What happens to the 1s orbital of each hydrogen atom as two of them approach to make a covalent bond.
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Q: Water and corn syrup have different densities even though they are both liquids.
3 answers
Q: Horizontal stems below the ground are called
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Q: What is the molarity of a sodium hydroxide solution made by combining 2.0 L of 0.60 M NaOH with 495 mL of 3.0 M NaOH Assume the volumes of the two solutions to be additive.
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Q: According to Le chatelier's principle what happens if heat is added to a system
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Q: Is Pbl2 ionic or covalent
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Q: What kind of bond is present in Na-Br
3 answers
Q: What is the nonmetal in period three with properties similar to iodine
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Q: What is the name of the following compound PCl5
1 answer
Q: Explain why water freezing is not a chemical change.
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Q: Water particles are not actually water molecules trues or false
2 answers
Q: Kate and Janie are about to pour water into a beaker when they notice the beaker has a crack at the bottom. What should the students do with the beaker
3 answers
Q: What is theMolar mass of NaOH
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Q: Two uses of mineral silver
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Q: The normal boiling point of cyclohexane is 81.0 degrees celcius.what is the vapor pressure of cyclohexane
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Q: What is the Chemical formula for lithium and selenium
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Q: What is the volume of a glue stick
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Q: What is a carbohydrate polymer composed of beta-glucose subunits
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Q: What cannot be reduced to simpler substances by chemical means
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Q: What is a subscript in a balanced chemical equation
1 answer
Q: What is the net ionic equation of sodium acetate and barium sulfide
1 answer
Q: Is lithium negative or positive
10 answers
Q: Which substance is a solid at room temperature water nitrogen mercury or gold
2 answers
Q: A bond based on intermolecular forces between hydrogen and fluorine nitrogen or oxygen is a .
1 answer
Q: Why is some glycol yellow and some red
1 answer
Q: 2 in which substance are molecules rigidly arranged 1. water in a freezer at -2degree C 2. water in cup at 22degree C 3. water in a pot at 100degree C 4.water in a steam engine at 110degree C
3 answers
Q: The length of time it takes a pesticide to pass through a material to reach the skin is called what
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Q: What is the relationship if any between strong electrolyte and strong acid or base
2 answers
Q: In both liquid water and ice a hydrogen bond forms between .
2 answers
Q: The patient needs to take 0.6 grams of ibuprofen (Advil). The label on the container reads Advil tablets 400 mg. How many tablets should he patient take
2 answers
Q: How does the rate of effusion of sulfur dioxide SO2 compare to that of helium (He) (Note the molar masses are SO2 64 gmol He 4.0 gmol.)
1 answer
Q: A gymnast jumps from a great height onto a sealed mat filled with air. What happens to the gas particles inside the mat during the impact
3 answers
Q: At 40.0 and degC the pressure inside a nitrogen and minusfilled tennis ball with a volume of 148 cm3 is 235 kPa. How many moles of nitrogen (N2) are in the tennis ball
3 answers
Q: Sublimation is the change in state from .
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Q: What element is a soccer ball made of
2 answers
Q: Water reacts with sodium metal to produce sodium hydroxide and hydrogen gas along with heat and light.What are the reactants inn this chemical reaction
1 answer
Q: . In the reaction of aluminum bromide with ionized sodium bromide which compound is the Lewis acid
1 answer
Q: What is a small opening on the underside of a leaf through which oxygen and carbon dioxide can move
1 answer
Q: Because each adversary may have different intentions and capabilities you may need to enact different scenarios for different adversaries.
2 answers
Q: Predict the products resulting from the decomposition of sodium chlorate
2 answers
Q: How could you use universal indicator paper as a way of distinguishing between distilled water sodium hydroxide solution and ethanoic acid solution
2 answers
Q: What is the mass of 40g of sugar water
2 answers
Q: What is the substance or mixture in a gold ring
1 answer
Q: What is special about the ionic formula formed between barium and fluorine
1 answer
Q: How does vapour pressure of supercooled water compare with that of ice at the same temperature
2 answers
Q: Is H2 non polar covalent
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Q: Property of material which allows it to be drawn out into wires is
4 answers
Q: Mixture was found to contain 1.05g of SiO2 0.69g of cellulose 1.82g of calcium carbonate. Calculate the percentage of calcium carbonate in the mixture x. Note round your answer to 2 significant figure
1 answer
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