How many grams of potassium are in 7.81 kg of apples if an apple contains 159 mg potassium and there are 3.00 apples per pound.  Use 2.20 pounds = 1.00 kg. Group of answer choices 8.20 g 0.122 g 324 g 0.911 g 1.69 g

Q: If the density of a liquid is 8.96 g/mL, how mL are need to give a sample that has a mass of 62.72…

A: Density is defined as the mass of substance divided by volume of substance.  Density, d =…

Q: 2. If the density of an unknown object was found to be 2.87 x 10 “ pounds (lbs) per cubic inch, what…

A: Density of a unknown object = 2.87 × 10-4 pounds (Ibs) per cubic inch  Density of the unknown object…

Q: What is the density of a block of wood that has a volume of 450 milliliters and a mass of 0.694…

A:

Q: What is the mass of a material with a density of 2.22 g/mL and a volume of 5.11 mL? 11.34 g 2.89 g…

A: given:  volume of material = 5.11 ml  density of material = 2.22 g/ml  formula used : density of a…

Q: A 6.0-ft person weighs 168 Ib. What is this person's height in meters and weight in kilograms? (1 lb…

A: In the above question, we have given height and weights of a person in ft and lb. We will convert it…

Q: A Solid has the volume  of 22.6 cm3 and density of 8.75 g/ cm3   Calculate the mass in mg A.) 1.98…

A: The relation between Mass and Density and Volume of an Object is : Density (d) =  Mass (m) / Volume…

Q: A piece of weighing paper recorded a mass of 0.200 g. An object was placed on the weighing paper to…

A: Mass of object =10.900-0.200                               =10.700g

Q: An empty vial weighs 53.56 g. The vial weighs 474.24 g when filled with liquid mercury  (d = 13.53…

A: Given : mass of vial = 53.56 g Mass of vial with mercury filled = 474.24 g density of mercury =…

Q: A sample of liquid has the mass of 18.0 g and volume of 8.00 mL. Calculate the density in g/ mL

A: Given :- mass of liquid = 18.0 g               Volume of liquid = 8.00 mL  To be calculated :-…

Q: If the price of gold is 1227.00 dollars/oz what is the value of gold in the advertised coin? The…

A: we know 1oz = 28349.5mg

Q: A rectangular  block has the length of 4.20 cm and width of 1.38 cm.   If the  rectangular block has…

A:

Q: A chemist needs 2.00grams of a liquid compound with a density of 0.718 g/cm^3. What volume of the…

A:

Q: How many low dose 81mg aspirin tablets can be made from 1.21 kg of aspirin? 1.5×10^3 tablets…

A: • The values provided in the question are:-  i) Total mass of aspirin = 1.21 kg    ii) Mass of one…

Q: A tablet of Benadryl (RR), an antihistamine, has a mass of 0.53 g. It contains 25 mg of the active…

A: Given : mass of tablet = 0.53 g And mass of active ingredient = 25 mg

Q: You wish to prepare 193 grams of 8.25% (w/w) NaNO3. Assume that the density of water is 1.00 g/mL.…

A: In Question A)  Given 8.25%(w/w) of NaNO3  Means that 8.25g of NaNO3 is present in 100g of solution.…

Q: Calculate the density of a liquid with a mass of 90.5 g and a volume of 106.47 mL. O 0.850 g/mL 0.85…

A: Provided mass of liquid(m)=90.5 g Provided volume of liquid(V)=106.47ml The density is defined as-…

Q: A piece of metal weighs 8.25 g. When a student places it into a graduated cylinder containing water,…

A: we have to calculate the density of metal

Q: A flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

A:

Q: An empty vial weighs 55.32 g. (a) If the vial weighs 185.56 g when filled with liquid mercury (d =…

A: The density of a liquid is defined as the ratio of the mass of the liquid to the volume. The SI unit…

Q: An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to…

A: Density :-  The ratio of mass of a substance to the volume occupied by that substance under the…

Q: An empty vial weighs 51.54 g. The vial weighs 467.18 g when filled with liquid mercury (d = 13.53…

A: Given data contains, Mass of empty vial is 51.54g. Mass of vial containing mercury is 467.18g.…

Q: flask of mercury has a mass of 76.0 pounds (lbs). What is the mass of the flask in grams?  3.45 x…

A: The mass of flask of mercury  = 76pounds  1 Pounds = 453.92grams

Q: What is the volume of a 12.2 g piece of zirconium? d = 6.51 g/cm3 Group of answer choices 79.4 cm3…

A: * mass of piece of zirconium (m) = 12.2 g * Density (d) = 6.51 g/cm3

Q: A graduated cylinder contains 100 ml of water. After a sample of peridotite is placed in the…

A: Change in volume if water  = 190-100  = 90 ml  Mass of substance = 300g

Q: A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder,…

A:

Q: A piece of metal ore weighs 8.75 g. When a student places it into a graduated cylinder containing…

A: The density of the ore is to be calculated

Q: 9.1.00 in³ of a liquid weigh$ 0.0644 pounds) What is the mass in gram of 0.750 mL of this liquid? 1…

A: Given: Volume of 1.00 in3 of a liquid weighs 0.0644 pounds. Volume of 0.750 mL of a liquid weighs ?…

Q: The mass of a proton is 1.67 x 10-27 kg. What is the mass of a proton in femtograms? A) 1.67 x…

A: Mass of proton is sum of subatomic particles: protons and neutrons. Subatomic particles are protons,…

Q: what is the mass in grams of a cube of gold (density = 19.32 g/cm^3) if the length of the cube is…

A: Density :-  The ratio of mass of a substance to volume occupied by the substance is defined as…

Q: A sample of an unknown ore weighing 1.275 kg is found. When the sample is placed into a large…

A: Given that : Mass of the sample = 1.275 kg = 1275 g When the sample is placed into a large graduated…

Q: A metal slug weighing 25.17 g is added to a flask with a volume of 59.7 mL. It is found that 44.4 g…

A: Given = mass of metal =25.17 g               Volume of flask = 59.7 mL                Mass of…

Q: Calculate the density of the following materials for which the mass and volume of samples have been…

A:

Q: Assume the recommended single dose of an antihistamine for a child weighing 36–47 lbs is 1.50…

A:

Q: Calculate the length (in m) of a rectangular solid that weighs 95.5 g and  has a width of 2.50 cm…

A:

Q: Composition C-4 is a plastic explosive having a density of 1.05 g/cm3. Calculate the mass of a brick…

A: The brick has a shape of rectangle which has volume , V = L x W x H Where  L = length W = width H =…

Q: A chemistry student needs 90.0g of carbon tetrachloride for an experiment. The density of carbon…

A:

Q: A 38.6 kg marble slab is shown above. What is its density? Give your answer to the nearest tenth

A: Given: Length of marble = 23.0 cm height of marble = 17.0 cm width of marble = 4.00 cm Mass of…

Q: Magnesium (Mg) is a valuable metal used in alloys, in batteries, and in the manufacture of…

A: To calculate the volume of seawater first we have to convert the mass of Mg from tons to grams then…

Q: A solution was prepared by dissolving 16 g of CaCl2 in 72g of water and has a density of 1,180 g /…

A:

Q: What is the volume of 40.0 kg of gold, which has a density of 19.3 g/ml? Select one: a. 2.07 x 103…

A: The formula for density d = m / v Where d = density             m = mass             v = volume…

Q: 6. An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d = 1.00 g/cm³), the flask and…

A:

Q: A pill that is 91.5% aspirin is found to contain 59.99 mg of aspirin. What is the mass of the pill…

A:

Q: Identify the choice that best completes the statement or answers the question. What is the mass in…

A: Given, 1 pound = 454 g Therefore, 25 pounds = (454 x 25) g = 11350 g We know, 1000 g = 1 kg…

Q: An empty vial weighs 85.32 g (a) If the vial weighs 215.56 g when filled with liquid mercury…

A: We have to calculate the volume of mercury and weight of vial once filled with water.

Q: A chemist adds 160.0mL of a ×6.510−5μM silver(II) oxide AgO solution to a reaction flask. Calculate…

A: The given information is: Volume of solution = 160.0 ml Molarity of solution = 6.5 x 10−5μM = 6.5 x…

Q: Which piece of equipment would you use to measure 7.10 mL of CuSO4 (aq)?

A: The given information says that about 7.10mL of CuSO4 (aq) has to be measured. The given value is…

Q: Ultrapure silver is used to make solid state devices such as computer chips. What is the mass in…

A: Given: density of silver = 10.50 g/cm3 radius of cylinder = 3.50 cm length of cylinder = 12.40 cm

Q: What is the density (g/mL) of a sample of olive oil if 250 mL has a mass of 0.23 kg? 0.00092 g/mL…

A: Density of a substance or a solution is the ratio of its mass to volume. density=massvolume

Q: The owner of a rock shop claims that a nugget is pure gold.  When the nugget is placed into a…

A: Given that : The initial volume in the graduated cylinder = 50.0 mL The final volume in the…

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.