Chemistry

What is the average speed of a race car if it travelled a total of 500 miles in 3.5 hours
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Sulfur and fluorine react to form sulfur hexafluoride according to the reaction shown here. How many mol of F2 are required to react completely with 2.15 mol of S?S(s)+3F2(g)SF6(g)A. 12.9 molF2B. 6.45 molF2C. 0.72 molF2D. 2.15 molF2
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There are approximately 4,600 species of cockroaches that have been discovered and named on the planet. Cockroaches first landed in the Americas in 1625, and about 65 species are currently found in the United States. Below is a table that compares egg production of three different cockroach species that are common pests in Texas.
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6. The random motion of the particle in a substance is greatest when thesubstance is
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i need to write a brief paragraph on why this lab is important, please help!! here is the question!How can the properties of acids and bases be used to classify solutions?
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What is chemical equilibrium?Question 1 options:The rearrangement of the constituent atoms to create different substances as products.A reversible reaction.The process by which the reactants form products and products form reactants at equal rates.A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
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please help im so bad at science
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3 of 12Assessment: Force and Motion CBAFour students recorded the time it took them to walk to school from their homes as shown in the tablebelow.Student123Motion of Four StudentsDistance (meters) Time (minutes)1,100201,0261984816795154Which student had the greatest average speed?Student 1Student 2Student 3Student 412345678910Next
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How many moles are in 15.2 grams of Calcium (Ca)?
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9. Circle the atom in each pair that has the greater ionization energy.A) Li or BeB) Ca or BaC) Na or KD) P or ArE) Cl or SiF) Li or K
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define the term pure substance
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which gas would diffuse rapidly at the same temperature and pressure UF6 or CL2
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What is the percent composition of water found in tin (IV) oxide octahydrate?
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The pH of a solution is 9.67. Calculate [H+] for the solution
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Which of the following is true of all stars? A) they produce energy and radiation B) they have about the same temperature c) they are generally the same size and color D) they produce energy for the same length of time
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17. When you hold a soda can in your hand, you possess trillions and trillions of aluminum atoms. In one paragraph, usingyour own words, explain how ions of aluminum atoms would generally interact based on their charges, and how thatinteraction is overcome through metallic bonding to form the can that you hold.PLEASE PUT REAL ANSWER OR I WILL REPORT YOUMARKING BRAINLYEST TO FIRST PERSON
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One of the reactions used to inflate automobile air bags involves sodium azide (NaN). 2NaN --> 2Na + 3NDetermine the mass of N produced from 250.0 g NaN
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At the same temperature and pressure, balloons of equal volume always containa.equal masses of gas.b.equal numbers of molecules.c.equal densities of gas.d.equal numbers of atoms.
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What properties can be used to identify puree substances?
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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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A basketball inflated to a pressure of 2.25 atm is increased in temperature from 275 K to 317 K.What will be the new pressure, in torr, if the volume remains constant?
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Blood is made up of red and white blood cells, platelets and ______. Find the interquartile range
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Scientists classify organisms into three domains and six kingdoms. In whichkingdom are yeasts classified and why?A Plantae, because they are eukaryotic.B Protista, because they are prokaryotic.Fungi, because they are heterotrophic.Animalia, because they are autotrophic.
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PLEASE PLEASE PLEASE HELP:An unknown material has 389 J of heat energy added to it. If its specific heat capacity is 0.371 J/g*C and 58 g were affected, what was the temperature increase?
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