Which equation below violates the law of conservation of mass? a. 2H2+ O2 –→ 2H2O b. KCl + Br –→ KBr + Cl2 c. 2FE2O3 + 3C → 4Fe + 3CO2 d. Na2CO3 + 2HC1 → 2NaCl + H2O + CO2

Q: Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally…

A: Using the formula moles of Sn117 is calculated as,

Q: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au What mass of gold would you expect to recover from 2.50x105 gr

A: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au2 mol  Au(CN)2 produces  2 mol Autherefore,2 g ×Au(CN)2 produces = 2 g…

Q: P.S. 6. A miner was digging up some ore (rock). The ore contains 84% lead(II) sulfide by mass. How…

A:

Q: مان A₂B(g) +B(g) =A₂B₂ (g) 1 c = 16-4 2 Ag+ 2B (g) = A ₂ B₂ (g) kc = 28.2 Fc for the reactio 6 A (g)…

A: here we are required to find the equilibrium constant for the given reaction.

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

A:

Q: Determine the mass percent of carbon in Fe(C2H3O2)3.

A:

Q: A sample of iron weighing 15.0 g was heated with potassium chlorate (KCIO3) in an evacuated…

A:

Q: 8. Fill in the following boxes. . HO, heat HO, SOCI2 NaN3 1. he t 2. H2C 2 MeI +

A: There is lots of reaction involved in the given questions.

Q: A student conducts this synthesis. She starts with 7.3447 g of Fe(NH4)2(SO4)2 6H2O and isolates…

A: a. The number of moles of FeC2O4 is calculated as,

Q: Define Relative abundance

A: We have to define relative abundance.

Q: K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3 Which of the following gives the balanced equation for this…

A: The above-given reaction is : K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3 We have to write the balanced…

Q: 10. A. CSH 100 санк Brz 1.03, Dom 2. DmS ent

A: Alkanes undergo bromination in the presence of light to form haloalkane. The mechanism followed is…

Q: 2NH3(8)+302(8)+2CH4(g) 2HCN(g)+6H2O(g) kJ

A:

Q: d e BeCl2 (s) + H₂O(g) → BeO(s) + HCl(g) BeCl₂ (s) + H₂O(g) →→→ BeO(s) + BaH₂ (s) + H₂O(l) → Ba(OH)2…

A: Check the number of elements on both side and try to balance it.

Q: A 20.0 g ore sample is composed of a mixture of Fe203 and Fe304. The mixture is found to contain…

A: This problem is based on mole concept.Here, we have to find out the percentage of  Fe2O3.

Q: Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and…

A:

Q: Let's start by finding the location on the periodic table for the atoms for substances that conduct…

A: In general ionic compounds formed between metal and non metal conducts electricity when dissolved in…

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: Consider these compounds: A. Zn3(PO4)2 B. Ag₂CO3 C. Ca3(PO4)2 D. Ag₂SO4 Complete the following…

A: The question is based on the concept of solubility product principle. It states that when a weak…

Q: Br- CI hy CI aya O CI AICI 3 1. AICI 3 2. MeMgBr

A: The given reactions are shown below.Provide the structure of the products of the given reactions.

Q: molar mass C

A:

Q: The initial abundances of O, Mg, and Si atoms are respectively in the ratio 21:1:1. And O, Mg, and…

A: The initial abundances are given in the ratio: O              21 Mg           1 Si             1

Q: н Enter the mass percent of CHF3 in the visualization. MM[CHF3]=70.01 g/mol, MM[C2H6]=30.07 g/mol,…

A:

Q: 1) BCE: Type: 2) BCE: Type: 3) BCE: Type: Fe C3H6O Pb(NO3)2 → • + ● + Cl₂ 0₂ NaCl ● ● ● ↑ ↑ FeCl3…

A:

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: A 5.05 g sample of quartz (SiO2) contains 2.36 g of silicon. What are the percentages of silicon and…

A: The mass of sample of quartz is 5.05 g. The mass of silicon in quartz is 2.36 g.

Q: Use the data below to determine the mass ratio of iron to oxygen for compound 1. Compound 1 2 Mass…

A: Given: In compound 1, Mass of Fe = 15.55 g and mass of O = 4.45 g

Q: +2 Pb Thallium Lead 200.592 2818 32 182 1832 18 1 204.383 207.2 28 18 32 10 2818 32 18 3 111 112 +2…

A: In Balanced chemical equation number of atoms of each species are equal on both reactant and…

Q: 105 105 Ag + 47 46 Pd ype: 40 +1 :əype- 244 4. 94 2.

A: Interpretation: We have to tell the type of reactions given.

Q: Question 9 In 1928, 2.0 g of rhenium, Re, was isolated from 550 kg of the ore molybenite. The…

A: 9) Given, mass of rhenium = 2.0 g Note: 1 kg = 1000 g mass of ore molybenite = 550 kg = 550 × 1000 g…

Q: f. 6.0 h. OH HgSO4, H₂SO4 H₂O 1. PCC, DCM 2. CH3Li, Et₂O 3. H3O+ 1. H3O+ 2. CH3OH

A: Nucleophilic attack at epoxide ring in presence of acid , proceeds through the formation of more…

Q: 2. C12H24(I) + O2(g)

A:

Q: h Oxidation: Cr2+→ Cr³+ + e Reduction: Cu2+ + 2 e² → Cu Net: 2 Cr2+ + Cu2+ Cu + 2 Cr³+ What is the…

A: Oxidation is defined as an increase in the oxidation state of the element.It can also be defined as…

Q: Decide whether each statement is true (T) or false (F). Place your answer in the blank space given.…

A: Scientific theory states that the atoms in today's plastics were parts of microscopic plants and…

Q: Write the chemical formula for this molecule: 0 || CLS Cl X Ś

A: Chemical formula represent the number and kinds of atoms that are present in a molecule or compound.…

Q: (Balance the equation) Pb(NO3)2+KIà PbI2+KNO3

A: A balanced chemical reaction equation has equal number of atoms and charges on both reactant and…

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.