2. A compound was analyzed and found to have the following percentage composition by mass: Cu: 49.73% P: 16.28% 0: 33.99% Determine the empirical formula of this compound.

Q: Which n 15. Carry out the following mathematical ope significant figures. a) 116.3 ст —0.33 ст…

A: 15. Given, a) 116.3 cm - 0.33 cm = b) 137.8 mL + 25 mL =  c) 21 mg + 13.8 mg + 130.36 mg =

Q: e limiting reactant?

A:

Q: A small beaker was found to have a mass of 27.847 g. A 10.00 mL sample of an unknown liquidwas…

A: Answer :- 1.225 (g.mL-1)  Density of unknown liquid (solution) = 1.225 g.mL-1…

Q: I have a balloon that can hold 100.0 liters of air. If I blow up this balloon with 3.00 moles of…

A:

Q: 4. A 0.1475-M solution of Ba(OH)2 was used to titrate the acetic acid (60.05 g/mol) in a dilute…

A: Molar concentration, also known as molarity, is defined as the number of moles of solute present in…

Q: Perform the following calculation, reporting your answer to the correct number of significant…

A: Rules for significant figure All non zero integer are significant Exact number have unlimited…

Q: Evaluate the expression and report the answer to the proper number of significant figures. log (9.9…

A:

Q: Ammonia (NH,) chemically reacts with oxygen gas (o,) to produce nitric oxide (NO) and water (H,0).…

A: Given data is as follows: The mass of ammonia given = 1.2 g The mass of oxygen gas consumed = ?

Q: (1.00866 – 1.00716) d. 6.02205 x 1023 9.875 x 102 – 9.803 x 10? x 100 = |(100 is exact) 9.875 x 102…

A: According to the rule for significant digits in addition and subtraction, the number of significant…

Q: What would be the reading of the liquid in the following graduated cylinder, reported to the proper…

A: Given is graduated cylinder.  We measure reading at lower meniscus.

Q: Perform the calculation, and report the answer to the correct number of significant figures.

A: Perform the calculation, and report the answer to the correct number of significant figures.

Q: A chemist determined by measurements that 0.050 moles of iron participated in a chemical reaction.…

A:

Q: Please provide the correct number of significant digits. (aleks is saying significant figures is…

A: Here, in a question tabular data is given. We need to find the missing values. Ka = Dissociation…

Q: Calculate the number of joules in a Btu.

A: Given :- 1 Btu (British thermal unit)  To find :- value in joules

Q: The Daily Value for phosphorus is 900 mgmg. How many grams of phosphorus are recommended? Express…

A:

Q: To the correct number of significant figures calculate log(4.399x104).

A: Significant figures are the digits of a number that have meaning in terms of accuracy or precision.

Q: A student measures the melting point of an unknown compound to be 53.5 degrees C. She later…

A:

Q: Answer the following question: A student wants to make a 1.600 M aqueous solution of barium sulfate,…

A:

Q: Do the following calculations to the correct number of significant figures: MUST follow the rules…

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

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

A: Isotopes are atoms of the same element that differ in the numbers of neutrons in the nucleus. These…

Q: Calculate the enthalpy of the reaction 4B(s) + 302 (9)→2B2O3 (s) given the following pertinent…

A: Solution: We will rearrange the given reactions in such a way that it can become the required…

Q: Question 1 If 85 mL of 0.548 M NAOH is diluted to a total volume of 152 mL, what is the molarity of…

A: • Molarity of the diluted NaOH, can be calculated by using the Molarity relationship. • This…

Q: Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water.…

A:

Q: 1 sig fig 2 sig figs 3 sig figs 4 sig figs 5 sig figs Answer Bank 0.006 0.030 890020 140 4.050 11020…

A: Significant figures:- preceding zero after decimal doesn’t count. For example 0.008 can be written…

Q: Calculate the tare weight for an object placed in a 10.9114 g container with a total mass of 16.4545…

A: Container that when subtracted from gross weight yields the net weight is regarded as tare weight.…

Q: 4. How many moles of neon gas are there if 25.0 liters of the gas are at 5.0°C with a pressure of…

A: Answer:- This question is answered by using simple concept of calculation of moles of a gas at the…

Q: The density of a liquid is 2.30 g/cm³. What is its density in lb/ft³? 1 in = 2.54 cm; 1 lb = 454 g 1…

A: Given, Density of a liquid = 2.30 g/cm3 Density of the liquid = ? lb/ft3 1 in = 2.54 cm 1 lb = 454 g…

Q: Calculate the density of aluminum if it has a mas of 83.6g and a volume of 23.99 mL. Use correct…

A: Weight of Aluminium = 83.6 gm Volume of aluminium = 23.99 ml

Q: A sample of 0.225 mole of gas has a volume of 748 mL at 28°C. Calculate the pressure in atm of this…

A:

Q: If you are walking at a speed of 2.5 miles an hour how fast are you moving in kilometers a min.…

A: The speed in kilometers (km) per minutes, it is to be determined. Given: speed = 2.5 miles/hr 1 mile…

Q: A stock solution will be prepared by mixing the following chemicals together: 3.0 mL of 0.00200 M…

A: Molarity of Fe(NO3)3 used, C = 0.200 M  Volume of 0.200 M Fe(NO3)3 used, V = 10.0 mL

Q: Numbers which are not the results of measurements are not considered significant figures.   True or…

A:

Q: (8.71× 0.0301) 0.056

A:

Q: Answering to the correct number of significant figures, what is 5.80 x 120? A) 696 B) 700 C) 7.0 x…

A: The given equation is, 5.80 × 120 = 696

Q: Ammonia chemically reacts with oxygen gas to produce nitric oxide and water. What mass of ammonia is…

A: Moles of oxygen can be calculated as:

Q: 1. An object was carefully weighed on three different balances. Each balance was zeroed before…

A: Absolute error: magnitude of the difference between the measured value and the true value. Relative…

Q: Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water .…

A: Given  Mass of hexane= 16.4 g mass of oxygen = 25.0 g to find mass of carbon dioxide =?

Q: Calculate the density of an unknown solid (g/ml) = A top-loader balance measured the mass of the…

A: Density = mass÷ volume Number of moles = mass ÷ molar mass

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: The numbers in a given value which are significant to the true value is known as significant…

Q: You measure the distance between to cities to be 42.0 miles. You need to send this data to Brazil…

A: Convert 42.0 miles to km ?

Q: The sides of a certain rectangular wood block were measured 0.1294 meters, 7.41 centimeters and 9.4…

A: The volume of a given substance is defined as the amount of the space occupied by the substance that…

Q: What was the original pressure

A: Given : initial volume = 5.00 L               Final volume = 12.0 L               Final pressure =…

Q: Suppose 3.5 g of Compound A and 8.5 g of Compound B are consumed in a reaction that produces only…

A: To solve this problem we will use Law of Conservation of mass . According to this law  Mass of…

Q: Add 4.13 x 104 and 7.4 x 10³ Give the answer in the correct format with the correct number of…

A: Rule of addition with significant figure:  When adding measurements with significant figure, the…

Q: mass

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.