Q4) Recommend some possible methods to identify different materials without resorting to chemical analysis or lengthy testing procedures. Describe some possible testing and sorting techniques based on the physical properties of materials. (Any 5 methods)

Q: Assume that your temperature scale is based on ammonia, NH3. On the Celsius scale, ammonia has a…

A: Melting point of ammonia in celcius scale= - 77.7 °C Boiling point of ammonia in celcius scale=…

Q: Use unit analysis to show how to calculate the volume occupied by 15.8 grams of gold. See the table…

A: given :- mass of gold = 15.8 g  To calculate :- volume of gold  note :- The solution of this…

Q: Calculate the number of hydrogen atoms in a 100.0 g sample of ammonia (NH,). Be sure your answer has…

A: One mole of any molecule contains approximatly 6.022 x 1023 (Avogadro's number) molecules. And the…

Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…

A: By seeing the reaction , we can say that the mol ration is CS2 and CO2 is 1:1  so The volume of CO2…

Q: The density of gold is 19.3 g/mL. What is the volume of 48.9 g of gold?

A: The density of a substance is the mass of the substance per unit volume. So,

Q: How many hundreds are in 4.3 million?

A: Given 4.3 million We need to determine number of hundreds in it.

Q: Describing the relationship between the melting time for an ice cube and amount of salt sprinkled on…

A: The freezing point depression is the one that results in lowering of freezing point of the pure…

Q: A student measures the density of a solution to be 0.80 g/mL. The true density of the solution is…

A: Formula to calculate percent error is

Q: Please don't provide handwriting solution

A: Explained Below:Explanation:When using the method of successive approximation to solve an equation…

Q: Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas. What volume of water…

A:

Q: Hydrogen gas and nitrogen gas react to form ammonia gas. What volume of ammonia would be produced by…

A: According to mole relation, At STP, one mole of any gas is equivalent to 22.4 L   Mathematical…

Q: A submarine moved 85 kilometers south in 3.4 hours. during that time, its velocity constant. What…

A: A submarine moved 85 kilometers south in 3.4 hours. During that time, its velocity constant. We know…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: We have to convert the above equation in .

Q: Determine the number of: a) Cubic centimeter in 1.00 cubic inch b) Cubic feet in 1.00 cubic meter

A: a) 1.00 cubic inch To convert 1.0 cubic inch to cubic centimetre? b) 1.00 cubic meter  To convert…

Q: Express in similar unit and in lowest term 3,000 grams to 5 kilograms

A: First of all we need to convert the given ratio in fraction then convert both the values in similar…

Q: A sample of metal weighing 2.24 g is combined with oxygen; the metal oxide weighs 23.5 g. The mass…

A: Given values-> Weight of metal = 2.24gram Weight of metal oxide = 23.5gram

Q: Calculate the number of nitrogen atoms in a 110.0 g sample of dinitrogen tetroxide (N,O,). Be sure…

A:

Q: If 0.750 g of orange mercury oxide decomposes to 0.695 g of liquid mercury and oxygen gas, what is…

A: Given data contains, Mass of mercury oxide is 0.750 g. Mass of liquid mercury is 0.695 g.

Q: What is the volume of a piece of silver metal that has a mass of 143 g?

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Q: plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and…

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Q: 0.007 decigrams is equal to how many micrograms?

A: 0.007 decigrams is equal to how many micrograms has to be given.

Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…

A:

Q: I am extremely bad at math and I need help understanding how to do unit conversions. I have these…

A: Thank you for the question. We’ll answer the first question since the exact one wasn’t specified.…

Q: A thermometer reads 111.1 K. What is the temperature in °C?

A: Given temperature is in kelvin(K).To convert temperature from kelvin (K) to celsius ( oC ), we use…

Q: decide if the given statement is true or false,and give a brief justification for your answer.If…

A: Given statement,    In the metric system, the concentration of chemical in a tank of solution is…

Q: 1. The radius of a potassium atom is 0.227 nm. Express this radius in the unit centimeters.   2.…

A: In the given question, conversion of the given length measurement.

Q: Describe a method to determine the volume of a very small needle.  4. Why is it necessary to record…

A: Answer 3)  If we have an object with a standard geometric shape, (like a cube or a sphere) , we can…

Q: express each of the following values in the given base unit. .......... s = 316 Ms

A: Use the conversion unit,1 sec = 1000 millisecondsAfter conversion, make sure to round it off to 4…

Q: Which of the following terms describes what a doctor forms when treating patients prior to ordering…

A: Experiment is the term required for the treatment of the patient by the doctor with the normal…

Q: What is the maximum number of pure gold that could be extracted from 95.0 g of calaverite, a gold…

A: Given: The mass of calaverite is 95.0 g The molar mass of AuTe2 (calaverite) is 452.17 g/mol The…

Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…

A: We have to calculate the volume of carbon dioxide.Given: 4.15 cm3 of oxygen was consumed. We know…

Q: Use the data below to determine the mmoles of sodium oxalate to 2 decimal places. (MM sodium oxalate…

A: Given : mass of sodium oxalate = 0.093 g             MM of sodium oxalate = 134 g/mol  Tip : moles =…

Q: What does the term "inversely proportional" mean?

A: There are two type of relation, directly proportional or inversely proportional.

Q: Read the question carefully and encircle the letter of the correct answer. The following statement…

A: Chemical reactions produce new substance and particles are rearrange to form new substance . Matter…

Q: Which of the following observations/results involved quantitative chemical analysis? A. the…

A: In analytical chemistry, quantitative analysis is the determination of the absolute or relative…

Q: Consider the following two volume measurements: 57.7 mL and 57.68 mL. Which of these is the more…

A: Two Volume Measurements:57.7 mL57.68 mLMore precise measurement: Needs to be determined

Q: The density of an unknown metal at room temperature, is 8.956 g/cm³. What is the density in pounds…

A: Density at room temperature (d) = 8.96 g/cm3Density can be calculated as -Density = mass / volume

Q: It is known that 1mL = 1cm³. What is the mass of a cube of gold (density = 19.32 g/cm³) if the…

A: Length of cube or side of gold = 2.00 cmdensity of gold = 19.32 g/cm3mass =?

Q: Please don't provide handwritten solution .... what is the density of a cube gold if the gold…

A: Density of substance is calculated by dividing a given mass by volume. In the given question it has…

Q: A jet airplane reaches 887. km/h on a certain flight. How long does it take to cover 454. m? Set the…

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Q: Use calculator to solve the problems. Write your answer in scientific notation with correct number…

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Q: How many moles of water were lost if the amount of water lost was 0.378 grams?  Do not include units…

A: The moles of water that were lost if the amount of water lost was 0.378 grams are to be calculated.

Q: You might have noticed that while eating icecream on a hot day, some of the ice cream begins tomelt.…

A: Is the observed change in the state of the ice creama physical or a chemical change? Justify your…

Q: In 38.7 mL of water, a gold nugget weighing 523 g is inserted. The volume of the water increases to…

A:

Q: The mass of water in gm is always .... its volume in cm3

A: Given statement is : The mass of water in gm is always .... its volume in cm3

Q: e concentration of

A:

Q: Ammonium phosphate ((NH), PO,) is an important ingredient in many fertilizers. It can be made by…

A: The reaction of Phosphoric acid with Ammonia:-                    H3PO4  +  3NH3   → [(NH4)3 PO4]…

Q: Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon…

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.