Three metal objects have the following masses: 7.119 mg 2.12 g 245.2 g How should you report the total mass of metal? 247.327119 g 247.33 g 254.439 g 247.3 g

Q: What is the mass of  1.42x10^24 atoms of oxygen?  grams What is the mass of 5.01x10^23 molecules…

A: In the question, following information given - Atoms of oxygen (O) = 1.42×1024 Molecules of oxygen…

Q: What is the difference in mass between a nickel that weighs 4.8 g and a nickel that weighs 4.8673 g?

A: Given,  Mass of nickel = 4.8…

Q: A student is measuring a sample of sodium bicarbonate on an electronic balance that measures to the…

A: Introduction to electronic balance- An equipment used to measure material weight accurately is an…

Q: The density of silver (Ag) is 10.5 g/mL. Determine the mass in kilograms of Ag that will occupy 345…

A: The density of silver (Ag) given is 3.62 g/mL.The volume of Ag given is 345 mL.To find the mass of…

Q: What is the volume of a gold nugget that has a mass of 2.20 kg? The density of gold is:  19 g/cm3…

A: Given, the mass of gold nugget =2.20 kg =2200 gramdensity of gold =19 gramcm3we are asked to…

Q: The density of copper is 8.94 g/cm°. What is the volume of copper in a 420 g sample? O 378 cm3 O 65…

A: Density of a substance is the ratio of mass to volume. The density is usually indicated by the…

Q: Classify substance as a pure substance or a mixture. If it is a pure substance, classify it as an…

A: Given: Aluminum

Q: 4. The volume of a piece of metal is 40.0 ml. Its density is 4.00 g/ml. What is its mass? a) 160 g…

A: Given density of metal = 4 g/ml  Volume = 40 ml

Q: Platinum has a density of 21.45 g/cm³ 25 °C. On the other hand, water at this temperature has a…

A: Given - Density of platinum at 25°C = 21.45 g/cm3            Density of water at 25°C = 0.99997 g/ml…

Q: A goldsmith wants to change the composition of 10 g 18K red gold (75% gold and 25% copper) into 60%…

A: 10 g 18 K red gold contains 75% gold + 25% copper

Q: What is the mass of the oxygen used during the reaction? Iron + Oxygen → Iron Oxide Iron 19.43 g…

A:

Q: A copper atom has a mass of 1.06 x 10 - 22 g and a penny has a mass of 2.5 g. Use this information…

A: Given,  Mass of 1 copper atom = 1.06 × 10-22 g Mass of a penny = 2.5 g Mass of 1 mole of copper…

Q: As an environmental scientist, you take a sample of soil from a farm field intentionally polluted…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: An aluminum cylinder is 0.512 ft in length and has a diameter of 0.3142 inch. The density of…

A: The objective of the question is to calculate the volume, mass and the number of aluminum atoms in…

Q: Of the following, is the smallest mass. O 25 kg 2.5 x 10 mg O 2.5 x 105 pg O 2.5 x 10° fg O 2.5 x…

A:

Q: What is the volume of sugar (mL) in a 50.0 g sample of sugar if its density is 1.59 g cm 3? 079.5 mL…

A: Density is defined as the mass per unit volume of the substance. The density, mass, and volume of a…

Q: You are given a cube of pure adamantium. You measure the sides of the cube to find the volume and…

A:

Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28 g of carbon and…

A: Answer: option 2) 90.6% Carbon and 9.4% Hydrogen

Q: What is the mass of 1 carbon atom in grams? what is the mass of one dozen carbon atoms in grams and…

A: Carbon is an important element in periodic table. Its atomic number is 6. It has 4 e-s in outermost…

Q: Determine how many grams of oxygen will be reacted given 32grams of hydrogen H2 gas.

A: Given Mass of H2 gas  = 32 gram  Mass of O2 gas  = ? Molar mass of H2   =( 2 ×1 )…

Q: How many atoms are there in each of the following substances? 1.88 g Bi Express your answer using…

A: Calculate number of atoms in each element given--

Q: The volume of a sample of lead (density 11.3 g/cm) was determined to be 13.4 cm3. Calculate the mass…

A: Mass of the sample = volume x density                                 = 13.4 cm3 x 11.3 g/cm3…

Q: A substance composed of only one type of matter is a solution a compound a heterogeneous mixture an…

A: Matter :-  Anything which has mass and occupy some volume is called matter. Matter is of three types…

Q: A sample of a compound has a mass of 41.13 g. The sample is found to contain 37.28 g of carbon and…

A: The mass of the sample compound is = 41.13 g The mass of carbon in this sample is = 37.28 g The mass…

Q: The density of metal #2 is 3 times greater than the density of metal #1. 52.5 g of metal #2 caused…

A: Given Density of metal #2 is 3 time greater than density of metal #1

Q: A chardonnay wine is 13.5 percent by mass alcohol. If we consume 24 fluid oz of wine, and the…

A: Percent by mass alcohol = 13.5 % Volume of wine = 24 oz 1 oz = 29.57 mL 24 oz = 709.76 mL or 0.70976…

Q: The density of iron is 7.86 g/cm3. What is the mass in grams of an irregularly shaped piece of iron…

A:

Q: A chemist measures the amount of fluorine gas produced during an experiment. He finds that 3.1 g of…

A:

Q: If a cube of gold has a length of 2.50 cm, what is the mass of the gold sample? Convert 19.3 g cm-3…

A: Given that: Length of  gold cube = 2.50 cm Density of gold = 19.3 g/cm3 Volume of cube = (length)3 =…

Q: What is the mass of 1.91 x 10^23 atoms of nitrogen? ____ grams What is the mass of 3.91 x 10^23…

A: Since moles of any atom = number of atoms / Avogadro's number And moles of any molecules = number of…

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 84.784.7 grams. Tia…

A: First of all calculate the number of moles of gold by using formula- mole = mass/molar mass then…

Q: 1. Suppose some measurements are made on two different homogeneous stones to find out if they are…

A: Mass and volume are extensive properties which depends upon the amount of the substance and thus,…

Q: Determine the mass of the product from the following data.    Mass Aluminum Foil (g)      2.5415…

A:

Q: The volume of water in a container is 25.0 mL.When a solid object was added to the water in the…

A: Volume of water = 25.0 mL Volume of water level in the container when object is added = 35.0 mL

Q: The chemical formula for hydrogen bromide is HBr. A chemist measured the amount of hydrogen bromide…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.