How do we calculate ? I just put 7 it's incorrect .

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

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Q: Food safety guidelines recommend that a beef rib roast (bone-in) should cook for 23.0 minutes per…

A: According to the question, it is given that time is taken to cook 1 Pound roast = 23.0 minutes Thus,…

Q: The distance from the sun to Earth is 1.50 x 108 km. The speed of light is 3.00 x108 m/s. How many…

A: Given, Speed of light - 3.00 × 108 m/s. Distance between sun and the earth - 1.50 × 108 km = 1.5 ×…

Q: Question 1: How many atoms of Zinc are in 0.60 mol of zinc?

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: 12. Pure chlorine enters a process. By measurement it is found that 2.4 kg of chlorine pass into the…

A: Molar Flow Rate  : It can be defined as the no of moles (n) of a substance passed through a line per…

Q: 1-The answer rounded to the correct number of significant figures after    Performing the following…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A student determines that 4 clinks weighs 15.45 g and 7 clacks weighs 14.11 g. What is the relative…

A: Solution -

Q: 10^-2 + 9.92 x 10^-3

A: In multiplication,  significant figure rules in multiplication  , The answer has the minimum number…

Q: A sample of butane gas was completely combusted in oxygen to produce energy. If 1.35 x 1024…

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Q: 4. Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot having a volume of…

A: See the solution given below of question 4 (There are multiple questions: Since you have posted…

Q: Mercury is traded by the “flask,” a unit that has a mass of 34.5 kg. Determine the volume of a flask…

A: Any solution's density exhibits the available mass of particular substance/compound into unit…

Q: 14. A student determined the density of air (STP conditions) to be 1.19 grams/Litre. If the…

A: Given, calculated density (experimetal value) = 1.19 grams/litre theoretical density value = 1.29…

Q: An electric current of 21.50 A flows for 21.0 minutes. Calculate the amount of electric charge…

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Q: Not sure what I am doing wrong here...

A: The average heart rate of a typical person is 74.0 beats/min. the number of beats in 5.0years can be…

Q: The solubility of BaSO, in water at 25 °C is measured to be 0.0023 Use this information to calculate…

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Q: If you travel to Canada, speed limits are posted in km/hr. For a speed limit of 70. mi/hr, what…

A: Given :-  Speed = 70 mi/hr  To convert :-  The given speed in Km/hr