200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of some gas which was not weighed. Based on this information, which of the following compounds was decomposed, SiClF3 or SiCl2H2, or could it be either one?

Q: During the grade 10 camping trip. You have 10kg of wood to burn at the campfire and at the end of…

A: a) This describes the reaction of burning of wood ,which is a chemical reaction in which wood in the…

Q: If 1.00 g of gray zinc powder reacts with 0.49 g of yellow sulfur powder, what is the mass of the…

A: Given : Mass of gray zinc powder = 1.00 g Mass of  yellow sulfur powder = 0.49 g Mass of ZnS = ?

Q: The following diagram represents a chemical reaction in which the red spheres are oxygen atoms and…

A: a) In the left box, there are two type of molecules, one is oxygen (O2) and other is Nitrogen and…

Q: |\ S ১ 0SS 0 ५, ४)0° atonas of gold, Au?

A: As we know that, 1 mole of Ag contains 6.022 × 1023 atoms. Therefore, 4.50 × 1022 atoms will have  =…

Q: copper C iron C uminum OTHERS C

A: The metallic bond is Sodium which has a lone electron in the outermost orbital.

Q: The radius of a lead atom is 175 pm. How many lead atoms would have to be laid side by side to span…

A: Given: Radius of each lead atom = 175 pm = 175 X 10-12 m                          (Since 1 m = 1012…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Given,  Formula of hydrate copper(II) chloride = CuCl2.xH2O Mass of crucible = 16.221 gMass of…

Q: A student measures the mass of a sample of a metallic element, M. Then the student heats the sample…

A: Given: Mass of metal M is measured. And then the mass of compound MO forming after heating it with…

Q: why is the arrangement of the constituent atoms or molecules more important in determining the…

A: Three state of matter solid , liquid and gas. The arrangement of atoms or molecules in the lattice…

Q: Which accurately show the law of conservation of matter (mass)? A) when 2 oxygen molecules…

A: There is a mistake in the question. The mass of clay should be 12 gm before cutting it into two. I'm…

Q: Complete the following table by writing the name or formula for the substance and identifying the…

A: The chemical formula is used to presenting information about the chemical proportions of atoms. The…

Q: In a laboratory experiment, an undergraduate student collected a sample of ammonium phosphate. If…

A:

Q: Complete the table below.

A: Since you are asked for multiple elements, we are entitled to solve first three for you.

Q: In a reaction, 34.0g of chromium(III) oxide reacts with 12.1g of aluminum to produce chromium and…

A: 34.0g of chromium(III) oxide 12.1g of aluminum Both of these react to produce 23.3g of chromium and…

Q: A student conducts an experiment using an unknown hydrate and obtains the following data: Crucible…

A: Answer:- this question is answered by using the simple concept of determination of empirical formula…

Q: . The electrolysis of water into hydrogen and oxygen is an example of ______ reaction. A.…

A: The electrolysis of water into hydrogen and oxygen is an example of decomposition reaction so…

Q: In a reaction, 34.0 g of chromium(III) oxide reacts with 12.1 g of aluminum to producechromium and…

A: Given data, The balanced chemical equation is given below, The mass of chromium(III) oxide = 34.0 g…

Q: The table below sbows elements present in the Sun. The Sun's composition is similar to other main…

A: The sun is made up of hydrogen and helium in the maximum amount. All the elements produced in the…

Q: Complete the table below

A: Since you have posted multiple parts, the answer for first three parts are given below. Kindly…

Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

Q: What would the mass be of Gold, if you had 6.02 x 10^24 atoms of

A: GOLD, molar mass of Au = 196.97 g/mol atoms of Au = 6.023 x 1023

Q: Of the following, is the smallest mass. O 25 kg 2.5 x 10 mg O 2.5 x 105 pg O 2.5 x 10° fg O 2.5 x…

A:

Q: For each reaction, predict the sign and find the value of ΔS°:

A: It’s given below :

Q: What is the term for the property of a substance that cannot be observed without changing its…

A: The property of a substance that cannot be observed without changing its chemical formula is…

Q: A hydrated compound with a mass of 7.00g is heated. Its mass after heating is 5.63g. What is the…

A:

Q: trections: Answer the following question(s). 25 4AI + 302-2 Al¿O3 This is a reaction and the…

A: We have given that  21.Which of the following correctly names the phases of matter based on the…

Q: High-density lipoprotein (HDL) cholesterol is the “good” cholesterol because adequate levels reduce…

A:

Q: 1. A mole of hydrogen gas (H₂) is compared with a mole of lead (Pb). You can be certain that the…

A: One mole represents 6.023 x1023 particles. So, one mole of a substance = 6.023 x1023…

Q: Student K was asked to determine whether his bar was made of pure palladium.  II) Student S was…

A:

Q: A student conducts an experiment using an unknown hydrate and obtains the following data Crucible…

A: Given - Crucible =  24.31g Crucible+ hydrate = 29.31g Crucible+ anhydrate =  28.26g Mg % = 29.44% S…

Q: Carbon tetrachloride, CCl4, was a popular dry-cleaning agent until it was shown to be carcinogenic.…

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of one mole of molecules of a substance is known…

Q: An analytical chemist measures the amount of Elements E and E, in four samples of an unknown…

A: A pure substance will have the same composition of the elements present in it. The percentage of…

Q: A standard aspirin tablet contains 325 mg of aspirin, which has the molecular formula C9H8O4. How…

A: The number of moles of a substance is the ratio of its given mass by molar mass of the substance. It…

Q: Which of the following samples of matter would have the largest mass (grams)? Highlight the letter…

A: 1 mole = 6.02* 1023 molecules  At STP 1 mole of gas = 22.4 Lt  Mass = n . Molar mass where n = no.…

Q: Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown…

A: Given: Percent mass of carbon = 67.31 %. Percent mass of hydrogen = 6.978 %. Percent mass of…

Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: The density of MgO is 3.6 g/cm3. The atomic masses of magnesium and oxygen are 24.31 g, and 16 g,…

A: Given that Density of MgO = 3.6 g/cm3 Molecular weight of MgO = (1* 24.31) + (1 *16) = 40.31 g/mol

Q: Which of the following is most likely going to be a heterogeneous mixture? (A) C10H8 and H2O…

A: Heterogeneous mixture is a type of mixture which has all components in different phases and also the…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A:

Q: You have two distinct gaseous compounds made from element X and element Y. The mass percents are as…

A: For easy calculations in the above question, let us consider one unit of compound A is 100 grams and…

Q: A student has 27.8 grams of helium and requires 6,89 moles for an experiment. Does the sttdent have…

A: Given :  amount of He given = 27.8g  moles of He required = 6.89 moles

Q: A 7.57 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon…

A: A chemical reaction is a symbolic representation of the conversion of substances to new substances.…

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

A: The balanced reaction taking place is given as, => 2 NH3 (g) + 3 O2 (g) + 2 CH4 (g)…

Q: In simple terms, what is the difference between a theory and a law

A: Theory and laws are interrelated . Law  According to science , law is generalised statement  based…

Q: In a reaction, 33.4 g of chromium(III) oxide reacts with 11.9 g of aluminum to produce chromium and…

A: The reaction taking place is between chromium (III) oxide i.e Cr2O3 and aluminium i.e Al to produce…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".