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 0.181 g piece of solid aluminum reacts with gaseous oxygen from the atmosphere to form solid…

A: The reaction of aluminum with gaseous oxygen can be expressed as,                        4 Al + 3 O2…

Q: One gallon of gasoline in an automobile’s engineproduces on the average 9.5 kg of carbon dioxide,…

A: Solution- consumes gasoline 1 gallon at 20 miles journey  consume gasoline at 120× 5000 miles =…

Q: A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts…

A:

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

A: We have to calculate the mass of NaBr that can be formed.

Q: A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts…

A: The balanced equation for combustion of octane is given as - 2C8H18  + 25O2  => 16CO2 + 18H2O So,…

Q: A citrus dealer in Florida sells boxes of 100 oranges at a roadside stand. The boxes routinelyare…

A: Given data contains, The average weight of orange is 7.2 ounces. Average weight of the boxes is 3.2…

Q: When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 gg of carbon…

A: This question is asking about the mass of carbon dioxide during reactions of carbon with oxygen gas.…

Q: A major component of gasoline is octane (C,H). When octane is burned in air, it chemically reacts…

A: Given :-  Octane + oxygen → carbon dioxide + water  Amount of O2 = 2.6 g  To calculate :-  Amount of…

Q: In one box of nails, there are 75 iron nails weighing 0.250 lb. The density of iron is 7.86 g/cm3.…

A: Given that mass of 75 nails of iron = 0.250lb = 113.4g Density of iron = 7.86g/cm3 (a) volume of…

Q: A sample of sodium reacts completely with 0.142 kgkg of chlorine, forming 234 gg of sodium chloride.…

A: A)  Given :- mass of Cl2 = 0.142 kg or 142 g  Mass of NaCl formed = 234 g  To be calculated :-  Mass…

Q: An alien from planet X uses the units below for lenght. What is the volume of 38.2 yun3 in veg3? 1…

A: Given that,

Q: 120. A hybrid SUV consumes fuel at a rate of 12.8 km/L. Howmany miles can the car travel on 22.5 gal…

A: Rate of the fuel is 12.8 km/L. This shows that SUV consumes 12.8 km with one liter.

Q: You made a 36.6 g sample of a compound made of carbon and oxygen. You know that 10.0 g of carbon…

A: Number of moles = Mass/Molar mass

Q: 14K yellow gold is an alloy that contains gold, copper and silver. A 14K gold ring contains 6.90g of…

A:

Q: Ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H2O).…

A: In order to find the amount of ammonia that is used up during the reaction we have to first write…

Q: Some iron wire weighing 5.6g is placed in a beaker and covered with 15.0g of dilute hydrochloric…

A: It is given that;Mass of iron wire in the beaker = 5.6 gMass of dilute hydrochloric acid in the…

Q: 1. The surface temperature of the planet Venus is 847°F. What is this temperature in: Kelvin Celsius

A:

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

A: HCl + NaOH -> NaCl +H2O  Molar mass of HCl = 36.5 g/mol  Molar mass of NaCl = 40 g/mol

Q: A major component of gasoline is octane (C3H18). When octane is burned in air, it chemically reacts…

A:

Q: Household ammonia is a solution of ammonia gas and water, and it is used as a general purpose…

A:

Q: A major component of gasoline is octane (C3H18). When octane is burned in air, it chemically reacts…

A: Reaction occurs as follows:  C8H18 + O2 ----> CO2 + H2O  Thus to get the amount of oxygen…

Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction…

A:

Q: A major component of gasoline is octane (C,H18). When octane is burned in air, it chemically reacts…

A: The reaction for the given information can be written as follows, The balanced equation for the…

Q: A major component of gasoline is octane (CgH18). When octane is burned in air, it chemically reacts…

A: Combustion reaction is the reaction in which oxidation of hydrocarbons is done and produced water…

Q: An irregularly shaped rock weighs 268.42 kg. It is placed in a cylinder that has 50.6 L of water.…

A: Given, Note: 1 Kg = 1000 g Mass of rock = 268.42 kg = 268.42 × 1000 g = 268420 grams Initially,…

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

A:

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

A: The chemical reaction between HCl and NaOH is shown here-HCl+NaOH→NaCl+H2OHere moles of HCl…

Q: ny g is equivalent to 1500 µg?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 6. Every morning I use 1 cup of Bisquick pancake mix to make pancakes for my kids. How many boxes of…

A: 6) Consumption of Bisquick pancake mix for preparing pancakes per day = 1 cup…

Q: Ammonia (NH,) chemically reacts with oxygen gas (O2) to produce nitric 8Xlde What mass of ammonia is…

A:

Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three…

A: Here you should understand that if you have nothing in the beaker it is the empty weight of beaker.

Q: A solid sample weighing 12.10 g occupies a volume of 0.0150 L. Will the solid float or sink in…

A: Density of the substance is equal to the ratio of mass to the volume. Substance having low density…

Q: Zinc ore (zinc sulfide) is treated with sulfuric acid, leaving a solution with some undissolved bits…

A:

Q: Two samples of potassium iodide are decomposed into their constituent elements. The first sample…

A:

Q: which gasoline is less is less expensive: gas that cost $2.41 per gallon, or gas that sells $0.78…

A:

Q: 0.369 L conversión to dL

A: 1 liter = 10 decilitre  1L = 10 dL by using this standard conversion we can convert the Liter into…

Q: A major component of gasoline is octane (C,H). When octane is burned in air, it chemically reacts…

A: Amount of Oxygen Gas consumed during the reaction with Octane can be calculated as follows:

Q: When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 21.6 gg of carbon…

A: 1) Write the balanced chemical equation for the given chemical reaction. 2) Identify the limiting…

Q: your front lawn is 24.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1150…

A:

Q: 586 cal to joules.

A:

Q: A particular paint has a density of O.914g/cm3. You need to cover a wall that is 7.6m long and 2.74m…

A: Given data  Density of paint = 0.914 g/cm3  Length of wall = 7.6 m Height of wall = 2.74 m Thickness…

Q: A major component of gasoline is octane (CH₂). When octane is burned in air, it chemically reacts…

A:

Q: Convert (5.252x10^2) °C to k

A: Conversion of Celsius to Kelvin can be done by adding 273.15 .   The solution is given below-

Q: A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts…

A:

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

A:

Q: 1) A student measures 7.45 cm³ of chloroform using a glass syringe. Given that the density of…

A: The moles of chloroform is calculated as,

Q: Gaseous ethane (CH,CH,) will react with gaseous oxygen (0,) to produce gaseous carbon dioxide (CO,)…

A: We have to find out the mass of H2O produces after burning of Ethane

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

A:

Q: Nitrogen gas has a density of 4.566 g/L and liquid nitrogen density is 809 g/L. Calculate the…

A: We know that, density can be expressed as,…

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.