Chemistry

The initial pressure of 0.31 moles of gas in a drum is 742 torr. If gas is added to the drum and the final pressure is 759 torr, how many moles of gas are in the drum? Hint: for this problem, you do not have an equation in the Introduction section, but based on the relationship between pressure and volume, what can you determine about the relationship between pressure and the number of moles?
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What is the independent variable in this experiment? (Look at the photo)
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Help I do not understand.
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how do particles differ after a physical change?
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Can you help me please..
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Question 2/8From left to right across the second period of the periodic table,
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Convert 18.6 L of neon gas at STP to atoms. 1.What is the coefficient of the scientific notation answer? 2.What is the exponent of the scientific notation answer? 3.How many significant figures are there in the answer? 4.What is the right most significant figure in the answer ?
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Which of the following is necessary for two organisms to be considered as coexisting in a mutualistic relationship?One organism benefits while the other neither benefits nor is harmed.One organism benefits while the other is harmed.Both organisms are harmed from the relationship.Both organisms benefit form the relationship.
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What is the mass of 5.6 moles of Iron (III) Oxide?
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The volume of a 1.00-mole sample of an ideal gas will decrease when the1.pressure decreases and the temperature decreases2.pressure decreases and the temperature increases3.pressure increases and the temperature decreases4.pressure increases and the temperature increases
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A book is pushed and released and it slides across a table for a short distance. The book quickly comes to a stop. The book originallyhas kinetic energy. To what form of energy is the kinetic energy transformed?A)The kinetic energy is transformed into heat.B)The kinetic energy is transformed into chemical energy.C)The kinetic energy is not transformed into any other type of energy.EliminateD)The kinetic energy is transformed into electrical energy.Law of Conservation of Energy(58P2.c) Energy TransformationD 149628Regular CalsScientific CalsMy
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Please help with these two (last question is nwse)
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which shows how much electron is in the outer layer
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Phenolphthalein indicator is??
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neeeeeeeed help with science
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If you observe a Full Moon on January 12th, on what date would you observe the next New Moon?
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How many grams of glycerine, C3H8O3, are needed to make 100. mL of 2.60 M solution?
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Lemon and Orange contains Limonene. What difference they have from the angle ofstereo chemistry? Describe by drawing their structures?
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I NEED THIS LESS THAN 7 MINUTES IYS 15 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! What is the difference between a balanced equation and an unbalanced equation?All of the answers are correct.A balanced equation obeys the law of conservation of mass, an unbalanced equation does not. An unbalanced equation shows the conservation of mass.Balanced equations do not show equal numbers of atoms on each side of the equation.
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Acid HX has a very large Ka. How will the relative amounts of H+ and HXcompare at equilibrium?A)The concentration of H+ will be larger than HXB)The concentration of HX will be larger than H+C)The concentration of HX will be equal to H+
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NO FILES OR LINKS PLEASE HELPPPP IVE ASKED THIS 3 TIMES AND ALL I GET IS SCAM FILES ILL GIVE YOU BRAINLIEST PLEASEWhat is the skeleton equation for CuSO4+ 2NaOH Cu(OH)2+ Na2SO Copper sulfate + Sodium hydroxide --> copper hydroxide + sodium sulfate
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If 335 g water at 35.5C loses 5750 J of heat, what is the final temperature of the water?
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How many oxygen atoms are in 3.30 g of quartz?
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An ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. Help me! This is 8th grade sci btw.
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