A solid white substance A is heated strongly in the absence ofair. It decomposes to form a new white substance B and a gas C.The gas has exactly the same properties as the product obtainedwhen carbon is burned in an excess of oxygen. Basedon these observations, can we determine whether solids Aand B and gas C are elements or compounds?

Q: if magnesium sulfate is mixed with water, will it form a homogeneous or heterogeneous solution? Why?

A: Given : We have to tell whether the mixture of magnesium sulfate and water is homogenous or not.

Q: (a) Ne or Xe, (b) CO2 or CS2, (c) CH4 or Cl2, (d) F2 or LiF, (e) NH3 or PH3

A: Boiling point is defined as the temperature at which the vapor pressure of the substance becomes…

Q: Ideal Gas Law for analysis. Preliminary chemical analysis of the metal found it to be trivalent and…

A: given mass of unknown metal: 0.194 g barometric pressure : 745 torr Pressure of water vapor: 26.7…

Q: There are four sketches below. The first sketch shows a sample of Substance X. The three sketches…

A: A question based on physical and chemical changes. A molecular system is given whose most possible…

Q: Using grammatically correct English sentences, describethe relationship between the number 6.022 *…

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Q: (a) The sodium ion did not take part in this chemical reaction(Diluted H2SO4(aq) versus NaOH(aq)).…

A: The ion which doesn't take part in a reaction calls spectator ion. So here Na ion is spectator ion.

Q: Copper(II) sulfate forms a bright blue hydrate with the formula CuSO4⋅?H2O(s) . If this hydrate is…

A: Molar mass of Cu is 63.55 g/mol Molar mass of S is 32.07 g/mol Molar mass of O is 16 g/mol Molar…

Q: A hydrate initially weighs 5.821 grams and is heated. After heating it weighs 3.331 grams. Assuming…

A: •Here given weight of hydrate initially :-             W1 =5.821 gm  •Weight after heating:-…

Q: Write a feature which will distinguish a metallic solid from an ionic solid.

A: Introduction : We have to tell one feature how metallic solid is different from ionic solids .

Q: what is Iheroale lalw ? kn He plec in dulute e so r hydrKLole a बन नेा ित्वरठण The following dala…

A:

Q: Which of the following represents a chemical property of hydrogen gas? O It reacts explosively with…

A: To identify: The chemical property of hydrogen gas.

Q: Which of the following substances always has the same proportion (i.e. a fixed ratio) of its…

A: Proportion can be fixed or be varied in various substances.

Q: 10. Which of the following does not match the others? 168 (A) 67.2 3.88 1000 100 10 All, (M)/mol)…

A: ◆ Electronic Configuration is the distribution of electrons in the energy levels of the atom. The…

Q: an eq i) a hydride, which hydroiyses rapidly and extensively in cold water. in A bydride which is

A: Hydride: Hydride are the compound that is formed by reaction of elements with hydrogen. For example…

Q: A sample of nickel silver contains 18.0% nickel by mass. What mass of nickel silver must be melted…

A: Given: Sample of Nickel Silver contains: 18% Nickel by mass.

Q: Magnesitim will burn in air to form both Mg3N2 and Mgo. Vwhat mass oI each product would Ioune 3.42…

A:

Q: Classify these substances. More than one answer may apply in each case. N2 O heterogeneous mixture O…

A:

Q: Describe the PHYSICAL PROPERTIES of the following Specifically, what type of matter is this? (e.g.…

A: Hello. Since the question consists of multiple sub-parts, the first three sub-parts shall be only…

Q: Which is a description of a pattern displayed byelements in the periodic table?A. repetition of…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

Q: in cold water. ii) A hydride which is spontaneously flammabie in air ii) A hvdride which on…

A:

Q: For each of the following chemical reactions, provide the following three items: (1) the chemical…

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Q: (a) Atoms are very small compared to objects on the macroscopic scale. The radius of a aluminum atom…

A:

Q: Ozone O3 is a chemical that is a pollutant in the lower atmosphere and a protective shield against…

A: Yes, ozone is highly reactive gas. It contains 3 atoms of oxygen.  When ozone dissociate it produces…

Q: You wish to prepare 211 grams of 16.6 % Mg(CH3CO0)2. You will need grams of magnesium acetate and mL…

A: Mass of solution is = 211 g Percent concentration of Mg(CH3COO)2 is = 16.6 % Density of water is =…

Q: Define physical and chemical properties, provide three examples of each, discuss their…

A: A property that is measurable and can be observed normally that explains the appearance and physical…

Q: f the two products? g Mg3N2 g MgO

A: Given:  1. Mass of magnesium = 3.29 gm  Mass of product formed = 5.09 gm  2. Volume = 10 L…

Q: Q2/ The density of a material increases with the increases in bonding forces between its molecules…

A: Generally the density is the mass of Substance occupied by it's unit volume. Greater is the density…

Q: 3. The radius of an atom of gold (Au) is about 1.35 A°. (a) Express this distance in nanometers (nm)…

A: For the first problem just convert the units to the required one . In the 2nd problem, if we line up…

Q: A chemist has a 19.50g sample of drinking alcohol (ethyl alcohol). what is the volume ogf the…

A: The relationship between mass and volume is given below.

Q: Imagine that you are given 0.2500 g of a sample of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O).…

A: The mass of copper(II) sulfate pentahydrate (CuSO4 • 5 H2O) sample is = 0.2500 g The mass of…

Q: (BASIC QUESTIONS) Choose or tick the phase of matter that is being described CHOICES: GAS LIQUID…

A: Matter is divided into three different category named as solid, gas and liquids depending on the…

Q: lonic Compound Melting Polnt (C) MgF2 1263 MgBr2 711 CuCl 430 CuCl2 620 Which of the following…

A: Ionic compound is a chemical compound  composed of ions held together by electrostatic attraction.…

Q: The study of the structure of a material can be carried out at four different levels. The first is…

A: Materials science is a multidisciplinary field that studies the properties of matter and its…

Q: Form X Form Z foms of the same substance, form X and lom 2, that ditter in the aran

A: The density is the relationship between the mass of the substance and volume. It is a measure of…

Q: Q2: (Material lattice) choose the correct answer: no FCC ВсС НСР lattice availabl Heart tissue Piece…

A: FCC is ‘Face centered cubic lattice’ (coordination number 6), BCC is ‘Body centered cubic lattice’…

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.