Which of the following would be expected to be the most dense? Select one: a. Bismuth b. Arsenic c. Phosphorus d. Antimony

Q: What is the mass of 2.50 mol of helium (He)? Use correct number of significant digits; the tolerance…

A: To calculate mass of helium: It is calculated as

Q: Decide which element probably has a density most and least similar to the density of strontium.

A:

Q: convert 48.0g to volume of 02 (g)

A: Molar mass of O2 = 32.0 g/mol  1 mol gas = 22.4 L

Q: One pound of sulfur combines with one pound of oxygen to produce a gas. What is the percent by…

A: Mass of sulphur = 1 pound Mass of oxygen = 1 pound

Q: A 2.401 gram sample of magnesium is allowed to burn in 10.680 g of oxygen gas. What mass of oxygen…

A: Given,  Mass of magnesium = 2.401 g.  Mass of oxygen gas= 10.680 g.  The of oxygen gas remaining in…

Q: Part D How many lead atoms were in one cubic centimeter of air in 2011? Express the number of lead…

A: The concentration v/s year curve given is, Given: Volume of air = 1 cm3  And year = 2011

Q: he maximum mass of sodiu

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Q: Find its volume if the temperature increases to 85° C?

A:

Q: 6. When 60 g of calcium chloride is dissolved in 500 g of Water, greater than (a) exists as a liquid…

A:

Q: If molecules of hydrogen, nitrogen, oxygen and chlorine have the same kinetic energy which molecule…

A: average kinetic energy of molecule = (3/2)KT For all molecule at same temperature

Q: the mass

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Q: 41.2 ml sample of H2 at STP would contain how many grams of hydrogen?

A: one mole of any species contains quantity of its molar mass.

Q: Grivon atom 5tmm Gmtama 25Mm mamy Aet meutrons? धविक तुन्प्म बलऊणर४ ?

A: The symbol of the atom is Mn2557.

Q: 5. Carbon dioxide gas reacts with calcium hydroxide to produce calcium carbonate and water. If 450…

A: Since you have asked multiple question as per our company guidelines we are supposed to answer the…

Q: Does smoke have mass? Does it occupy space? Explain why

A: When a substance having mass and acquires space in its surroundings then it is known as matter. For…

Q: Part A The following image represents which kind of matter? O an element a mixture O a compound O…

A: In the figure given we can see that the particles are made by joining 2 spheres  1) 1 white sphere…

Q: A hydrate initially weighs 5.672 grams and is heated.  After heating, it weighs 4.483 grams.…

A: Given ,Initial hydrate weighs = 5.672 gAfter heating weighs = 4.483 gSo,mass in water form = Initial…

Q: K2S 7.69 x 1026 H2S04 1.29 C6H14 11.84 HClo3 2.45 x 1026

A: As you not specified so I am giving answer of first 3 questions  Use these formulas  Mole=mass/molar…

Q: 1.Determine the number of atoms in the following strue b) c) (p

A:

Q: ress your answer using four significant figures. ΑΣΦ ? -H = 28.19 kJ mol-1 ubmit Previous Answers…

A: Massof the hydrocarbon naphthalene (C10H8 ) = 1.094 g of naphthalene  Temperature change =  25.918…

Q: in her pocket for a few hours. When she took out the chocolate bar to eat it, the bar was was no…

A: Given, examine the state of the chocolate bar in the morning and then in the evening.

Q: What was the weight percent of water in the hydrate before heating?  Put answer in one decimal…

A: Weight percent of water in the hydrate before heating can be calculated using the given equation.

Q: Corn Dry Milling will separate kernels to "bugas mais" from "sungo" and "tiktik". What is the…

A: Answer  Corn Dry Milling  will separate kernels to " bugas mais"…

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

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

Q: Q16. What is the mass % of A) 60%A, 10%C C) 30%A, 20%B components A, B and C at the point x? B) 10…

A: Given is a ternary phase diagram, also called the Gibb's phase triangle, consisting of three…

Q: Student Z completes his/her calibration step for part 3 and finds an average mass, to be 95.237 g…

A: As per the guidelines, I am allowed to answer one question at a time. Please re upload the rest.…

Q: grams o

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Q: What is the formula mass of gold(I) phosphate?     Include the unit in your answer.

A: Multiply subscript of every element in formula by its atomic weight (relative atomic mass) as…

Q: Question 2 The detector is the part that computes the area of the peaks of the gas. O True O False

A: The area of a peak is proportional to amount of the compound that is prese detector  is a device…

Q: A sample of ascorbic acid (vitamin C) is synthesized in thelaboratory. It contains 30.0 g carbon and…

A: The mass of oxygen (in grams) in the second sample has to be  computed

Q: 11. During heat conduction in solids * a. the energy of the particles expands. b. the particles…

A:

Q: 186 L of nitrogen gas were mixed with hydrogen gas to produce 233 L ammonia. What volume of hydrogen…

A: This problem is based on the concept of limiting reagent. In this problem, H2 will be a limiting…

Q: The radius of a copper atom is 128 pm. How many copper atoms would have to be laid side by side to…

A: We are given radius of copper atom (r) = 128 pm =128×10-12 m distance (d)= 1.39 mm = 139×10-5 m…

Q: 3. Nitrogen, when combined with oxygen, can form various oxides. 3.5 g of nitrogen gas i burned in…

A: We are authorized to solve only first three subparts of a multipart question. Kindly post rest of…

Q: Describes the differences and similarities between solids, liquids and gases on a molecular level…

A: Solid - - > The substances which are having very high intermolecular forces between thier…

Q: Geologist estimate that the mantle flows at rat C. meters A. Centimeters B. Kilometers D. miles

A: A mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles…

Q: a) How to find the densities of a neatly cut rectangular prism shaped piece of wood, some coal and…

A: A question to suggest a way, that would be helpful to determine the density of wood, coal and…

Q: Corn Dry Milling will separate kernels to "bugas mais" from "sungo" and "tiktik". What is the…

A: Corn dry milling include processes like 1. Tempering 2. Degermination 3. Aspiration 4. Gravity…

Q: what is the mass of the methane

A: At STP :- 1 mol = 22.4 L  Molar mass of CH4 = 16.04 g/mol Mass of CH4 = number of moles of CH4 ×…

Q: A piece at metal with a mes of 125 g n placed into a grahatest cyinder that conta 25 ofw ing the…

A: Using the Formula of density we can solve this problem.

Q: 1. A 25g of Gold is found. Compute for the number of molecules and atoms present in the substance.

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Q: Calculate the mass (in grams) of 0.513 mol of titanium. Express the mass to three significant…

A:

Q: A rubber stopper weighing 8.554g displaces 7.0mL of water in a graduated cylinder.Refer to example…

A:

Q: Determine the formula weight of KBr. Provide an answer to two decimal places.

A: Formula weight of a molecules is determine by sum of masses of all its atoms.

Q: - 23 An iron atom has a mass of 9.27 × 10 g and a cooking pot has a mass of 0.500 kg. Use this…

A: Given : mass of 1 atom of iron = 9.27 X 10-23 g Since 1 mole of any species contains 6.022 X 1023…

Q: How many gold atoms are in an 0.214-ounce, 18 K gold bracelet? (18 K gold is 75% gold by mass.)…

A: Given,A 0.214 ounce gold bracelet which contains 75% gold by mass.First convert the given weight of…

Q: In the ideal gas experiment, a student accidentally dropped the magnesium ribbon inside the acid…

A:

Q: Three fundamental states of matter are represented in the diagrams below. States of Matter II II…

A: Kinetic Energy is decided on the basis of arrangement of atoms. Tightly arranged = less kinetic…

Q: Decide which element probably has a density most and least similar to the density of potassium.…

A: Please find your solution below : Density of any element can be determined by dividing the 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.