Master Chemistry with Fun Quizzes & Brain Teasers!

which of the following is larger then the atomic radius of phosphorusOptionsa: the ionic radius of phosphorus b: the atomic radius of argonc: the atomic radius of nitrogend: the ionic radius of chlorine
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What volume of product is produced when 20.0 Mg of liquid hydrogen reacts withexcess liquid oxygen in a rocket propellant reaction? The gas is formed at 101.325 kPa and 40 C
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Each nucleus of a cell contains:genes and chromosomesgenes and chloroplastschromosomes and chloroplastschlorophyll and chloroplasts
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what tool do you need to use to find temperature of hot chocolate a meter stick b stopwatch c balance d graduated cylinder e beaker f thermometer
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4 10-5 cm in scientific notation
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If it takes 0.0393 L of oxygen gas kept in a cylinder under pressure to fill an evacuated 1.05 L reaction vessel in which the pressure is 0.980 atm, what was the initial pressure of the gas in the cylinder
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what tool do you have to use to precise amount of water? A meter stick B stopwatch C balance D graduated cylinder E beaker F thermometer
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Answer for number 9 i need it asap thank you
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Rust is what type of Change?Physical ChangeChemical Change
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Using the table on the right, complete each calculation by typing in the correct answer.13.2L= ? mL
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Convection refers to the movement of heat through a fluid, such as water. Which best describes one way that convectioninfluences the circulation of ocean water?Cold water at the surface flows toward the poles and sinks as it cools.Deep, warm water flows toward the equator and rises as it cools.Warm water at the surface flows toward the poles and sinks as it cools.Deep, cold water flows toward the equator and rises as it cools,help me please
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What is the form of the Pythagorean triple generator?A. (x?+y?j* = (?-y? j* -(2xy)"O B. (x2+y?(x2 - y?j* +(2xy)?O C. (x2 - y2)* (*? +y?y* - (2xy)?O D. (x2 + y2)%= (+?]+(203)
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Given the formula V=1/3Ah, solve for h.
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what tool do you have to use to find the mass of a small pumpkin? A beaker B balance C stopwatch D meter stick E thermometer F graduated cylinder
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What factors influence the dissolving process for any salt
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Iodine-131 is a radioactive isotope, and is often used in certain medical treatments. It has a short half-life of about 8 days. If a hospital has a 750mg sample of it available, how much would be available after 48 days?
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Predict the products of the following reactions (assume complete reaction). In your submission include the overall balanced equation, and balanced net ionic equation if applicable:a. Adding zinc metal to a solution of copper(II) sulfate b. Dripping silver perchlorate into a solution of sodium carbonate c. A lump of aluminum metal is dropped into concentrated hydroiodic acid d. Sucrose is fermented in water by yeast to make ethanol and carbon dioxide (note: water is a reactant) e. Solid calcium oxide is added to water (careful) f. A lump of potassium metal is dropped into water (careful)
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Predict what will be observed in experiment below.Experiment:Rock candy is formed when excess sugar is dissolved in hot water followed by crystallization. A student wants to make two batches of rock candy. He finds an unopened box of "cane sugar" in the pantry. He starts preparing batch A by dissolving sugar in 500mL of hot water (70C). He keeps adding sugar until no more sugar dissolves in the hot water. He cools the solution to room temperature. He prepares batch B by dissolving sugar in 500mL of water at room temperature until no more sugar is dissolved. He lets the solution sit at room temperature. Predicted observation (Choose one).O It is likely that more rock candy will be formed in batch A. O It is likely that less rock candy will be formed in batch A. O It is likely that no rock candy will be formed in either batch. O I need more information to predict which batch is more likely to form rock candy.
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Hydrogen,H2,and nitrogen,N2(g), combined to form ammonia,NH3(g):3H2+N2>2NH3(g) what amount, in moles, of nitrogen will react 18 mols of hydrogen
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what tool do you have to use to find exactly 15.7 milliliters of vinegar? A beaker B balance C meter stick D thermometer E stopwatch F graduated cylinder
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How can we keep our voices in tip top shape? Please list the three things we can do to help our voices. Which would you say is most important?
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Can you please help me ?
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Can you please help me?
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when solid surfaces slide over each other, the kind of friction that occurs is _ friction
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