90. A 5.025-g sample of calcium is burned in air to produce a mixture of two ionic compounds, calcium oxide and cal- cium nitride. Water is added to this mixture. It reacts with calcium oxide to form 4.832 g of calcium hydroxide. How many grams of calcium oxide are formed? How many grams of calcium nitride? to 21etsw

Q: A sample of an unknown hydrated compound weighed 16.450 grams. After heating, it had a mass of…

A: We have to calculate the percentage of water by mass in the unknown hydrated compound that weighed…

Q: What is the volume of the following? A. 25g iodine; density=4.93g/cm³ B. 226g carbon;…

A: Given :  A. 25g iodine; density=4.93g/cm³   B. 226g carbon; density=0.089g/cm³  A. 6.00cm³ bromine;…

Q: For a compound containing 181.351 g C, 36.5115 g a) the empirical formula C2H4N C3H7N C3H6N3 b) the…

A:

Q: 4H3ZDq?1oBw7QYjl. O GASES Using Avogadro's Law Lindsay Hydrogen gas and nitrogen gas react to form…

A:

Q: What quantity in moles of potassium atoms do you have if you have 3.40 x 1022 atoms of potassium.…

A: Given , Element = Potassium

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: Given, Aqueous hydrochloric acid (HCl) react with solid Sodium hydroxide (NaOH) to produce aqueous…

Q: silicon by mass. How much oxygen will 10 g of silicon combine with?

A: 1 mol contain 6.022 × 1023 atoms.The mole is an SI unit used to measure the amount of any substance.…

Q: A 3.8 g sample of sodium hydrogen carbonate is added to al solution of acetic acid weighing 10.5 g.…

A:

Q: A mixture contains 24.5% A, 35.8% B, the remainder being component C. If you have 31.2g of this…

A: Given: The weight of given mixture is 31.2 g Percentage of component A is 24.5% Percentage of…

Q: An empty beaker is placed on a balance, and its mass is recorded at 42.513 g. The beaker is removed…

A: In this question, we want to determine the mass of the sodium chloride solution ( NaCl )  You can…

Q: 7. The speed limit on a road in Mexico is 90 km/hr. What is this speed equivalent to in miles per…

A:

Q: mass of zinc:      __30.543g____________                temperature of the zinc:     _100.0…

A: Enthalpy change for water = 906.476472 J Mass of zinc = 30.543 g Initial temperature of zinc = 100…

Q: In a butane lighter, 9.8 gg of butane combines with 35.1 gg of oxygen to form 29.6 gg carbon dioxide…

A:

Q: you have 125 g of a certain seasoning and are told that it contains 22.0 g of salt. What is the…

A: Given,mass of salt = 22 gmass of seasoning = 125 gSo,mass percentage of salt in seasoning = (22…

Q: A 480-pound alloy (which is just a mixture of metals ) containing 30% silver was mixed with an alloy…

A: Mass of alloy with 30% silver = 480 pound Mass of alloy with 55% silver taken = x pound % silver in…

Q: An unknown substance requires 32340 J of heat to melt. If the substance has a mass of 1.32 kg, what…

A: By definition, the specific heat c of a particular substance is the energy required to raise the…

Q: How can I calculate this following this formula?  Ecell = E°cell - RT/nF lnQ

A: Answer: This quetsions demands the explanation of the values used in the original solution.

Q: Gaseous butane CH3CH22CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2…

A:

Q: Calcium carbonate dec carbon dioxide are coll

A: According to Charle's law, volume of a gas is directly proportional to temperature at constant…

Q: A car gets 37.5 miles per gallon. Gas contains 84.2% carbon by mass and has a density of 0.8205…

A: Given,The mileage of a car = 37.5 miles/gallonmass percent of C = 84.2 %density of a gas = 0.8205…

Q: Gaseous ethane (CH,CH,) will react with gaseous oxygen (02) to produce gaseous carbon dioxide (CO,)…

A: Gaseous ethane reacts with gaseous oxygen to form gaseous carbon dioxide and gaseous water. The…

Q: 10. Calculate the mass of one mole of glucose (C,H,,O).

A: Given that , Substance = glucose (C6H12O6) moles = 1 mol Now we know molar mass of glucose=…

Q: 9. Convert 8.002 kg into g.

A: Solution Suppose you needed to convert the mass of a 250mg analgesic pill to grams. begin with what…

Q: Nitrogen dioxide gas has what volume @STP when its mass is 491.2g?  round to 2 decimal places.

A: In this question, we will determine the volume of NO2 in L unit at STP. At STP,  T = 0°C = 273K  P =…

Q: 3. Calculate the mass in grams of a 525 cm³ block of lead. 1.39/c 575ch 3. 4. Calculate the volume…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A gas company charges $1.30 for 15.0 ft³ of natural gas. What is the cost in $ per L?

A:

Q: mass of zinc:      __30.543g____________                temperature of the zinc:     _100.0…

A: Change in temperature for Zinc = Tfinal -Tinitial∆TZn = 23.9°C - 100.0°C = -76.1°CSo, Zn is cooled…

Q: When there is going to be a frost in Florida, farmers will spray their crops with water before the…

A: When temperatures drop below freezing, ice crystals can form on the surface of crops. This can cause…

Q: Aqueous sulfuric acid (H₂SO₂) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: Answer:Limiting reagent is the reactant that gets exhausted first in the chemical reaction and…

Q: Macmillan Learning Perform the calculation and report the answer using the proper number of…

A: Given,

Q: O Chemical Reactions Dilution 1/5 Bis A chemist must dilute 76.4 mL of 2.66 M aqueous sodium nitrate…

A: When we are diluting the solution by adding water we are not changing moles of solute so number of…

Q: 4. Let's say that the full volume of your flask is 325 ml. You heat the flask of air in a hot water…

A: Given: Full Volume of flask (initial volume of gas) (V1) = 325 L Initial temperature (T1) = 89.0 oC…

Q: Liquid sodium reacts with chlorine gas to produce sodium chloride. You want to produce 453 g of…

A:

Q: A chemist determines by measurements that 0.0500 moles of oxygen gas participate in a chemical…

A:

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.