Master Chemistry with Fun Quizzes & Brain Teasers!

You find an old gold ring in your house. You are sure it is gold but you do not know whatkarat it is. After chemistry class you determine the mass and volume of the ring. Youdetermine its mass is 14.3 g and its volume is 0.808 g. Next calculate the density of the ring and determine what karat gold it is. Can someone me with this question plz
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define atom and give an example
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pls help me, ill mark brainliest and give 5 stars
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#7- pls help me ill mark you brainliest and ill give you 5 stars
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In which of the following atoms are valence electrons in the lowest average potential energy states?ClBrFI
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#8- please help i suck at this, ill mark brainliest
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Determine the mass of hydrogen gas if 36 grams of water undergoes electrolysis to produce hydrogen and oxygen.
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Determine how you would prepare 220 mL of a 0.500 M potassium hydroxide solution starting with: a) solid potassium hydroxide b) a 1.25 M potassium hydroxide solution
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A runner completes a 400m race in 43.9s. What is his average speed?
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If you weighed 25 grams of NaOH in this lab, how many moles of NaOHwould you have?
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A liquid has rhe following properties : one-phase,colorless,boils it varying temperature. Which of the following BEST describes this liquidA.SolutionB.substanceC.suspensionD. Coarse mixture
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Which is the best surface for absorbing heat radiation? Shiny white Shiny black Dull black Dull white
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what bond is Mg3(PO4)2
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The image represents a(n)A) ion of xenon. B) atom of xenon. C) molecule of xenon. D) compound containing xenon.
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when a neutral atom gains or loses electrons, it becomes charged and is called a
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Is a comet found between Mars and JupiterPlease make sure you are correctThank you
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What does the term mass mean in science? A. The measure of the force of gravity on an object.B. The amount of matter in an object.C. The Amount of space that matter takes up.
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Which statements about mixture is FALSE?A. The ingredients ofvthe mixture keep their physical propertiesB. Mixture components can be separatedC. All mixtures are food or drink onlyD. A mixture contains more than one ingredients
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how many valence electrons does tungsten have
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HELPWrite the chemical name for each compound listed below.1. NaCl2. Al2O33. K254. CuBr25. Feo
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what is the oxidation number of cesium in Cs2Cr2O7
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Which molecules of the following gases willhave the greatest average kinetic energy?1. N2 at 1 atm and 298 K2. CO2 at 1 atm and 298 K3. H2 at 0.5 atm and 298 K4. He at 0.1 atm and 298 K5. All of the molecules have the same kineticenergy
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A weather balloon at Earths surface has avolume of 4 L at 275 K and 760 mm Hg. Ifthe balloon is released and the volume reaches4.13 L at 704 mm Hg, what is the temperature?Answer in units of K.
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One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar concentration of 24.7M. How many moles are contained in 500 mL of solution?
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