How many kg is 99 pounds? A 45 B 9.9 C 199 D 217.8 Answer is A. 45? Can you help me to explain to me step by step, please

Q: 1E. C₂H12O₂

A: Given Molecular formula: C8H12O2 To Determine: 1) IHD 2)Label the significant peak 3) Determine the…

Q: Am I right? Calculate the mass percentage of water in the hydrate. Show the calculations. Sample 1…

A: mass percentage of water = Mas of waterMass of hydrate x 100

Q: Question 11/ 12 ميز هذا السؤال Given the reaction below, how many grams of KI are needed to produce…

A: Potassium iodide reacts with lead nitrate to give lead iodide along with potassium nitrate.

Q: 15. This ForeverspinTM top os made of pure carbon, with an Atomic Mass of 12. This top weights 9…

A: P

Q: Express your answers to at least 5 significant figures.  The mass of one mole of boron is 10.811 g.…

A: Using mole concept easily determines number of atoms and molecules present in one mole of substance.

Q: where did the 1.479 come from?

A: Solution : Your doubt arises in the given step: 4.93 = 4.46 + log [( 40 + 3.5V mL) / (60 - 3.5V mL)]

Q: A penny has a mass of 2.50g and the Moon has a mass of 7.35x10^22kg. What is the mass of 1 mole of…

A: Given,

Q: The mass of AgCl that will be produced after adding excess Ag NO, to a 0.24g sample containing 50.6%…

A: Answer: option 3.)  0.32 g is the mass of AgCl produced.

Q: where did the 1.5032 come from?

A: Where did the 1.5032 come from ?

Q: . C. 6. . 6. . S. .. .. _H3PO4 + КОН → K+ _B₂O3 → HCI + NaOH → C + Na + NaOH + Rb + _C6H6 + S8 → _O₂…

A:

Q: ᴅɪʀᴇᴄᴛɪᴏɴꜱ: ᴅʀᴀᴡ ʟᴇᴡɪꜱ ꜱᴛʀᴜᴄᴛᴜʀᴇꜱ, ɴᴀᴍᴇ ꜱʜᴀᴘᴇꜱ, ᴀɴᴅ ɪɴᴅɪᴄᴀᴛᴇ ᴛʜᴇ ᴘᴏʟᴀʀɪᴛʏ ᴏꜰ ᴛʜᴇ ꜰᴏʟʟᴏᴡɪɴɢ…

A: Molecular geometry of the molecule gives shape of the molecule. If molecular geometry is symmetrical…

Q: A) It has a covalent double bond.

A: Iodine is 17th(VIIA)group element• it has 7 valence shell electrons• So required single electron to…

Q: What mass of BaCl2.2H2O is needed to prepare 500 mL of 0.0740 M CI* solution? 1. 09.04 g 2. 07.31 g…

A: Given data: The molarity of chloride ions = 0.0740 M=0.0740 mol/L. The volume of BaCl2.2H2O solution…

Q: DO 10 W 310Huops 3140/ HNO3(aq) +_ Naz (O3(aq) →

A: Answer: Complete ionic equation is the representation of chemical reaction in which all the ions and…

Q: You are asked to perform an experiment to determine the density of square block below. In order to…

A: Concept: Density is defined as mass per unit volume. Density =massVolume

Q: Describe the steps you would take to write the chemical formula for the compound bromine…

A: 1) First we will see the elements which are present in compound given - bromine pentafluoride .…

Q: Type of Bond (Polar or Nonpolar) Bond EN Difference С - О S-CI C-I N- CI Р-Br

A: A bond is polar covalent if the electronegativity difference between the atoms is between 0.4 and…

Q: Question 5/ 10 If 10.0 ml of an unknown sample of phosphorie acid was titrated against 0.12 M…

A: Volume of phosphoric acid=10.0mL Concentration of NaOH=0.12M Volume of NaOH=10.30mL Concentration of…

Q: Please use this word bank to fill in the blanks of the first 5 questions. Atom 1. S is a/an 2. Sg is…

A: l

Q: A silver nitrate solution contains 14.77 g of primary standard AgNO, , in 1.00 L what volume of this…

A:

Q: What is the mass, in g, of 2.67 × 10 nickel (Ni) atoms? Enter your answer in scientific notation. 12…

A: The given data contains, Atoms of nickel = 2.67×1012 Molar mass of Nickel = 58.69 g/mol.

Q: 3. +¹C 3 n + 103Lr 1. 4. 35Cl + p 17 4 20 α + 5. 235Cm + In → 96 91 + 8 n + Zr

A: Balancing a nuclear reaction involves making sure that the total number of protons and neutrons…

Q: The U.S. Government has about 1.23 * 107 pounds of gold in Fort Knox. How much is it worth at…

A: 1.23 X 107 pounds of gold = 12 X 1.23 X 107 Toz = 14.76 X 107 Toz

Q: How many grams are needed to prepare 250.0 ml of 0.2500 M of Potasium Hydrogen phthalate KHP…

A: Given data is as follows: The molarity potassium hydrogen phthalate (KHP) solution = 0.2500 M =…

Q: Use the conversion factor 1 amu = 1.66054 x 10-24 g to answer the questions. How many atomic mass…

A: Given: 1 amu = 1.66054×10-24 g

Q: 152 A 352.44 Your Answer: 155 T 362.31 Answer 153 units G 355.67 156 X 365.88 154 D 359.12 157 You…

A: Here, this problem is based on general chemistry and we have to find out the molar mass of the new…

Q: What mass of BaCly.2H,0 is needed to prepare 500 mL of 0.0740 M CI solution? 1. 09.04 g 2. 07.31 g…

A: Using the formula of molarity and mole -mole analysis we can determine the mass required.

Q: Suppose you need 6.0 m of Grade 70 tow chain, which has a diameter of 3/8" and weighs 2.16 kg/m, to…

A:

Q: Question 48 The PHIVOLCS recently reported that Taal volcano emitted 15,500 tons of Sulfur Dioxide…

A:

Q: Please explain to me, 1 step at a time, how to solve #93. I am not sure what they are doing on each…

A: The mass of atoms in 1.50g of fructose is calculated as,

Q: 2 Be 3 11 12 Na Mg 4 1 7 5 A29 A 44 Ru 6 Chapter 2: Chemistry Comes Alive 4 5 6 7 8 9 10 11 12 13 14…

A: Solutions- Solutions are those mixtures of two or more substances that are thought to be…

Q: Use the data listed in the supporting materials to calculate the equilibrium constant, Kp, for the…

A:

Q: Calculate the pH of a 50.00 mL of 0.2000 M ammonia (Ka = 5.7 x 10-10) solution after addition of…

A:

Q: Percentage Abundance. The element rubidium consists of two isotopes, one having an isotopic mass of…

A:

Q: Mass

A:

Q: Cl2 / CC4 a. 33 Study Unit 7 Br2 / CCl4 b.

A: Organic reaction with meachnism

Q: Part A - Determining Density and Using Density to Determine Volume or Mass Platinum, Pt, is one of…

A:

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.