Chemistry

What is the molarity of a solution inwhich 3.8 moles of sodium chloride(NaCl) is dissolved in water to a finalvolume of 2.5 L?
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HELPPP. What is the molarity (molar concentration) of a 500.0mL that contains 5.60g of KOH? Please show your work, with units, and include a therefore statement.
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14. Which of the following statement is correct?(a) Materials existing as liquids at room temperature have their melting and boiling points lower thanthat of room temperature.(b) The phenomenon involving the transition of a substance from solid to liquid state is calledsublimation(c) To convert a temperature on the Celsius scale to Kelvin scale, subtract 273 from the giventemperature(d) The density of ice is less than that of water.
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3z-1= 162+2.642-24Z=
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A student wants to increase the magnetic force between two bar magnets. What should the student do?AMake the positive poles face each other.BMove the magnets farther apart.CMake the negative poles face each other.DMove the magnets closer together.
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Lactic acid results from which of the following?
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A student following the reaction seen here calculated a theoretical yield of 38.3g CHCl but when he did the experiment in the lab he actually produced 36.8 g of CHCl. What is the percent yield? *
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The pressure of a 70.0L sample of gas is 600 mm Hg at 20.0C. If the temperature drops to 15.0C and the volume expands to 90.0L, what will the pressure of the gas be?
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question.What gas caused the change to the appearance oflimewater?
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Why are cells important?
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Why does the addition of a solute lower the freezing point of a solution?A The solute is colder than the solvent.B The solute disrupts crystal formation by the solvent.C The solute tends to sink to the bottom of the solution.D The solute has bigger molecules than the solvent.
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when the surface of a mirror curves inward, like the inside of a bowl, it is called a ____.A) plane mirrorB) convex mirrorC) concave mirrorD) diffuse mirror
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Create a Element #Brainliest Challenge Rules- It must Have Atomic mass and Number and it's Fictional name you createdFor Fun Add #GoGenius
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Fill in the missing piece of the table
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the rule of eight chemistry
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Balance the following equation by adding the correct mole numbers.P+Cl->PCl
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Why is scientist Robert Hazen using pressure bombs to blow up minerals
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Which of the following is an example of the endocrine system maintaining homeostasis?Group of answer choicesDetecting a pain stimulus and sending a signal to the spinal cord to perform an automatic responseProducing an excessive amount of hormones in the blood and not sending a signal to stop productionReleasing insulin to decrease blood sugar and releasing glucagon to increase blood sugarUsing sense organs to get information about the outside world and direct an appropriate body response
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what is the reaccion when copper (II) carbonate, Cuco3(s), andsulfuric acid, H2S04(aq), are mixed.
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How is a lithium atom (Li) different from a lithium ion (Li+)?Li has fewer electrons than Li+Li has more electrons than Li+Li has fewer protons than Li+Li has more protons than Li+
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What is the answer ?
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How many grams of californium-254 will remain after 363 days if westart with 64.0 grams of this substance? The half-life of californium-254is 60.5 days.
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What is the molar mass of ethanol (C2H60)?
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Which is usually associated with a slower reaction rate?A.using a whole solid in the reactantsB.adding heat energy to the reactantsC.adding food coloring to the reactantsD.using a strong solution of the reactants
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