Chemistry

If OPPOSITE poles (N and S) ofa magnet are placed neareach other, what happens?Type answer here
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Please please help me please please help please please help me please please help please please help me
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How many sulfur atoms are in 3.7 mol of SO2? 10 S atoms
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I have a chemistry writing promp but its asking questions here the prompt: What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen? State three potential molecular formulas from the empirical formula in A. If the molecular formula mass in A is 760 grams/mol, what is the molecular formula? WIll the molecular and empirical formulas in A and D have the same characteristics? Why or why not?
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In a single replacement reaction, the chloride ion in NaCl can be replacedbya. potassiumb. carbonc.fluorined.neon
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Robert is baking a cake. The instructions tell him to weigh all the ingredients before mixing. He has 100 g of eggs, 100 g of water, and 250 g of flour. He decides to weigh the cake after baking. It weighs 425 grams. He is confused by the results. Which answer supports what happened during the mixing and baking process. A. Baking is a closed system, so he must have mismeasured. None of the reactants left the system. B. Baking is an open system, so he must have mismeasured. None of the reactants left the system.C. Baking is a closed system, so he measured correctly. Some of the reactants may have left the system. D.Baking is an open system, so he measured correctly. Some of the reactants may have left the system
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find the number of molecules in 35.20 g of nitrogen dioxide
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Hey. Can someone, please help me with the following questions:Satellites Satellites ___________the earth.You can see _____________ _______________ without a telescope.An example of a man made satellite is the _____________ _____________ _____________.The only natural satellite of the earth is the __________.Choose from: moon, orbit, natural satellites, international space stationPlanets There are ________ planets you can see with the __________ __________.The five planets are, _________, ___________, ___________, ___________, ___________.The planets are part of the ___________ ___________.Light from Saturn takes around ___________ hours to reach earth.Choose from: 1,5, naked eye, solar system, Mercury, Venus, Mars, Jupiter, SaturnComets and Meteors A _________ is a spectacular sight in the _________ sky.They are _______ to see and could be described as giant ___________ that orbit the _______.__________ are bits of dust and _________ that _______ up as they move through the earths ____________. A meteor that makes it to earth is called a ______________.Galaxies 1. What are most of the dots of light that we see in the sky?2. What is the name of our home galaxy?3. What is the name of our nearest star?4. How long does it take the light from the sun to reach the earth?5. Can you say what some of the other dots of light in the night sky might be?6. How many stars might there be in one galaxy?7. What is the name of our nearest neighbor galaxy?8. State how long it takes for the light from our neighbor galaxy to reach the earth
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As the [h+] in a solution decreases, what happens to the [OH^-]?. It increases and the pH increases.B. It increases and the pH decreases.C. It increases and the pH stays constant.D. It decreases and the pH increases. E. It decreases and the pH decreases.
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How many water molecules are in 5.2 moles of H20?
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what happens when bromine water is added to ethane and ethene
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Gravitational potential energy depends on the
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a. An undesirable constituent of air
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2) Calculate the percent composition of each element in Mgso,3) Calculate the percentage of each element in Ag,o.
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DIMENTIONAL ANALYSIS!ASAP!!! BRAINLIEST!!PLS HELP!!! SHOW ALL WORK + STEPS!! Thx!
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What causes an object to have a positive charge?
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A sample of oxide iron weighing 2.40g was heated in a stream of hydrogen until it was completely converted to the metal. If the metal weighed 1.68g. What is the formula of the iron oxide? (Fe=56, O=16)
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Shontal compared some of the properties of a marble to a pieceof wood. She placed a marble and a piece of wood in a bucket filledwith water. Shontal observed the wood floating on top of the water,but the marble sank to the bottom of the bucket. Which statementbest explains why the marble and piece of wood acted differently inthe water?
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Which is the Net Ionic Equation for:(remember, the Net Ionic Eq. shows ALL of the PARTICIPANTS)2FeCl3(aq) + 3Mg(s) 3MgCl2(aq) + 2Fe(s)2Fe3+ (aq) + Cl3- (aq) + 3Mg(s) 3Mg3+ (aq) + Cl2- (aq) + 2Fe(s)2Fe3+ (aq) + 6Cl- (aq) + 3Mg(s) 3Mg2+ (aq) + 6Cl- (aq) + 2Fe(s)
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I NEED HELP PLZZ THX
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"A 4.75-kg cell phone is dropped from your second floor balcony (from rest). It hits theground at a speed of 40 m/s. Assuming air resistance can be ignored, calculate thegravitational potential energy of the cell phone before it was dropped."
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When you push or pull something, you are creating
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How do the causes of surface and deep water currents differ?A. Surface currents are caused by wind deep water currents are caused by difference in water densityB. Surface currents are caused by the Coriolis effect deep water currents are caused by differences in water densityC. Surface currents are caused by differences in water salinity deep water currents are caused by differences in water temperatureD. Surface currents are caused by differences in water density deep water currents are caused by wind
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How many molecules are in 1 mole of molecules?
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