Chemistry

How many moles of Iron (III) Oxide are found in 429 grams of Iron III Oxide?
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Electrical bonding refunding quick check!! A team wants to understand the effects of molecular weight on boiling point. The team has access to five substances withdifferent molecular weights and the time to measure 50 boiling points. How can the team make the best use of the laboratorytesting time? (1 point)O by taking 10 measurements of each of the five liquids and using the highest value from each setO by taking 10 measurements of each of the five liquids and finding an averageO by taking measurements of the liquids one at a time, making sure that the correct results are achieved beforemoving on to another liquidO by taking one measurement of each liquid and then working to improve the least certain liquid in the group
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why must a ph meter be calibrated by using a solution with a known ph value
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PLEASE ANSWER ASAPWhat is the best description of cirrus clouds?High level (altitude) clouds that are white and wispy like horses tails.Low level (altitude) clouds that are wispy and made of ice crystals.Middle level (altitude) clouds that are thick and spread out like a blanket.Middle level (altitude) clouds that are white and puffy with flat bottoms.Question 6 (1 point) Which processes of the water cycle involve the movement of water in the liquid state?Question 6 options:evaporation and precipitationsurface runoff and condensationprecipitation and surface runoffcondensation and evaporationQuestion 7 What is the name for raindrops that freeze as they fall through the air?dewsleetrainhailQuestion 8 The gas that is most abundant in the atmosphere is ________.oxygennitrogenwater vaportrace gasesQuestion 9 In which layer is the ozone that absorbs harmful UV radiation waves?mesopherestratospherethermospheretroposphereQuestion 10 Air pressure increases as altitude (elevation) ______________?Question 10 options:decreasesincreasesstays the same
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Select the correct answer. What does the kinetic theory state about the relationship between the speed and temperature of gas molecules? A. As the temperature increases, the speed of gas molecules remains constant. B. As the temperature increases, the speed of gas molecules decreases. C. As the temperature increases, the speed of gas molecules increases. D. As the speed of gas molecules increases, the temperature becomes constant. E. As the temperature decreases, the speed of gas molecules increases.
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In water is the mass of one molecule equal to the mass of one molecule in steam
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Calcolate resulant force 15N 20N
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HELP ASAP. GIVING BRAINLIEST
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can someone help me with this science assignment
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How are prisms and raindrops alike?They are both transparent.They both reflect white light.They are both translucent.They both refract white light.
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convert 3.79 x 10^24 atoms of sodium to grams
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Jacinta wrote the following passage about chemical changes.A chemical change is a change that results in one or more new substances with different properties. When a chemical change occurs, the new substance can give off an odor, such as rotting fruit or cookies baking in the oven. Chemical changes can cause color changes, such as iron rusting and turning a reddish-brown color. When wood is burned or ingredients are mixed for baking a cake, a new substance is made.Choose the best statement that Jacinta can add to her passage. Chemical changes, such as rotting fruit and burning wood, are affected by temperature. More heat and energy causes a faster chemical change. Wood burning and fruit rotting creates new substances through a chemical change that is affected by sound energy. Rotting fruit and burning wood is a chemical change that occurs because there is a decrease in temperature. Less heat causes a faster chemical change. When a chemical change occurs, the new substance that is created has properties similar to the original substance.
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The specific heat of water is 4.184 J/gC. How much energy (injoules) is required to raise the temperature of 18g of H2O from283K to 293K?
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K3PO4(aq)+MgCl2(aq)
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How many grams of CaSO4 form when50.0 mL of 0.20 M Ca(NO3)2 react withexcess potassium sulfate solution?Ca(NO3)2 + K2SO4 CaSO4 + 2KNO3-?] g CaSO4
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How is a chemical equation different from mathematical equation?Only chemical equation uses + signOnly chemical equation uses arrow instead of = signOnly chemical equation has numbersOnly chemical equation has minuses
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grtdggddgdggrsggrgrgd
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I need help with stoichiometry
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Industrial chemists have to understand the chemistry of oxides.For example, silicon dioxide is used in glass making and carbon monoxide is used in theextraction of iron from iron ore.(i) Explain how burning carbon in air can lead to the formation of carbon monoxide.(2)(ii) Write the balanced equation for the reaction between silicon and oxygen.(2)
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what is the number of protons in a neutral atom with 31 electrons and 38 neutrons?
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What type of volcano is formed at a weak spot in the middle of a plate?a.lavac.hot spotb.faultd.plate
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4. When a turbine spins, it generates electrical energy and that is where it gets its name from.
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What products are obtained by the electrolysis of CuSO4 solution using copper electrode ? Show with help of chemical reaction.
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plz download the doc and answer its due in 20 mins like bro wth
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