Chemistry

Convert 1.16 mol of calcium cyanide, Ca(CN)2, to mass.
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I need help, plz help me with this problem
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Analyze the reaction of solid magnesium and water. Which pair of reactants and products in the table below represent the correct balanced equation for the reaction?
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how do i find the name of an element
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What makes solids, liquids, and gases different. Explain the hypothesis, prediction and experiments that can lead to scientific theory.
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balanced chemical equations a) Sodium + Oxygen b) Potassium + Chlorine c) Hydrogen + Chlorine d) Nitrogen + Hydrogen e) Calcium + Nitrogen f) Calcium carbonate 8) Zinc + Hydrochloric acid Zinc chloride + Hydrogen h) Ammonia + Nitrogen - Calcium nitride Carbon dioxide + Calcium oxide Ammonium nitride
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What are the two elements sand is made of? *
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During the formation of an ionic compound 1) One atom losses electrons and the second gains electrons2) Two atoms lose electrons 3) Two atoms gain electrons
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How many moles of AgNO3 must react to form 0. 854 mol Ag? mol AgNO3.
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NEED ANSWER! WILL BRAINLIST! Why are tailings an environmental concern?A. They are a form of sewage that is found in agricultural runoff.B. They are the remains from mining and contain harmful chemicals.C. They are the waste products left over from fracking for natural gas.D. They are a type of greenhouse gas that can enter the atmosphere.
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Which materials are used to make concrete select all that apply
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What is the mass of 1.25 x [tex]10^{24}[/tex] atoms of nitrogen?
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which aqueous solution has the lowest vapor pressure?
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PLS ANSWER ALL QUESTIONS FOR 67 POINTSAtomic Structure1. All atoms are made up of small particles called ____________________.2. These small particles include the positively charged ________________, the negatively charged _____________ and the neutral ____________.3. The atomic mass equals the ______________ and the ______________. 4. The atomic number tells you the number of ________________ which is equal to the number of _________ in a stable atom.5. So, we can use the atomic mass and the atomic number to calculate the total number of just the neutrons. Calculate the number of neutrons in a Carbon atom.[Picture of carbon]Total number of neutrons = ________________6. The lightest sub-atomic particle is the _____________7. The center of the atom is called the __________8. The area where the negatively charged particles can be found is called the _________________9. Each of the charged particles are on what we call ____________ or ______________a. There are how many on the 1st layer _________b. On the 2nd layer _________c. On the 3rd layer _________ d. Electrons on the outer level of any atom have a special name which is _____________________ and these outer electrons determine the atoms reactivity with other elements
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elements of the fourth period fill the 4s sublevel with electrons before filling the 3d sublevel. Also, some elements move an electron from a filled 4s sublevel to an unoccupied 3d sublevel. Explain these behaviors
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Calculate the vapor pressure in torr of a solution containng 24.5 g of glycerin (C3H8O3) in 135 mL water at 30.0* C; the vapor pressure of water at this temperature is 31.8 torr. Assume that glycerin dissolves molecularly (does not dissociate).
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What is the atomic mass, in amu, of this atom?
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will give brainlist to a person with correct answers for all (please help me)1. Explain how is LiCl formed?2. What is a combination/synthesis reaction3. What is a decomposition reaction?4. What is a single-replacement reaction?5. What is a double-replacement reaction?6. What are the trends in electronegativity within groups and across periods in the periodic table?7. Which element has the lowest electronegativity value?8. How does electronegativity determine the type of bond that atoms will form?9. What type of bond will form between 2 atoms that have a large difference in electronegativity?10. What type of bond will form between 2 atoms when the difference in electronegativity is 0.5?11. Which element has the highest electronegativity value?12. What does it mean that matter cannot be created nor destroyed in a Chemical reaction?
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If the heat is added to an endothermic system, at equilibrium, the system will move to the _________ to regain equilibrium.
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Si echamos en un vaso agua y sal el huevo flotaria ? por que
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The boiling point of a liquid is tested at 10 different pressures, from 0.5 to 1.4 atmospheres. The results of the tests show thatthere is a nearly constant increase in boiling point for each increase in pressure. Which conclusion is reasonable based on thisinformation? (1 point)O A boiling point at 1.5 atmospheres could not be predicted with any certainty at all.O A boiling point at 15 atmospheres could not be predicted with any certainty at all.O A boiling point at 1.5 atmospheres could be predicted fairly well.O A boiling point at 15 atmospheres could be predicted fairly well.
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What is the balanced net ionic equation when aqueous solutions of Pb(NO3)2 and KBr are mixed and form a product
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Both propane and butane are used as gaseous fuels. Which compound produce more heat per gram burned? (mass of propane (C 3 H 3 )=44.1g/mol. mass of butane (C,H,0)=58.1g/mol)(10pts)(Hpropane-103.8kJ/mol.) (H propane-126.0kJ/mol)
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