On the basis of what you observed between carbon dioxide and the glowing splint, explain how CO2 fire extinguishers work

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to the air. After several hours…

A: The percentage of water in hydrated sample is given as : Percentage of water = ( mass of water /…

Q: Using one of the spectrophotometers in the lab, you measure a solution of unknown concentration and…

A: The Beer-Lambert Law, often known as Beer's Law, is a basic principle in analytical chemistry that…

Q: Hydrazine, N2H4, can be used as fuel to orient and maneuver spacecraft. The energy used to do so is…

A: (A) Writing down the balanced chemical equation: N2O4(l) + 2 N2H4(aq) ----> 3 N2(g) + 4 H2O(l)…

Q: Predict the products of the reaction below. That is, complete the right-hand side of the chemical…

A: The objective of the question is to predict the products of the given chemical reaction and ensure…

Q: 2. Identify which of the following may represents an element, a molecular compound, or an ionic…

A: Matter exists in various forms.  In terms of molecular scale, the type of bonding, and the type of…

Q: Provide an explanation for the way the following formula Ca5(PO4)3OH is written and state the name…

A: To naming compound, we first write cation then anion parts in front of cation. If there are more…

Q: empirical formula of the compound? List the elements in standard order for carbon compounds:

A:

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A:

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: Given: The sketch provided shows a substance.  Looking at 1000X, it seems to be hard and a pattern…

Q: Answer the questions in the table below about the shape of the carbon dioxide (CO₂) molecule. How…

A: A lone pair is a pair of valence electrons that are not involved in a chemical bond between atoms.…

Q: 1) How do we know that air is not a single substance? 2) Metals have many similar properties, but…

A: In this review we will examine several basic concepts of matter and materials, from the…

Q: Puffer Lake is a natural mountain lake located at an elevation of 9700 feet. If Torriceli's…

A: Answer: Option D. 515 mmHg is correct

Q: You are told by your instructor to go to the stock room and find a bottle of the chemical K3Cl. Does…

A: K is potassium, element of group 1 of periodic table with 1 valence electron And Cl is chlorine,…

Q: What would you expect to observe about your anhydrous copper(II) sulfate on a hot,

A: We have to observe the behaviour of anhydrous copper sulphate.

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: Complete the following chemical equations.a. Na(s) + H 2 O(l) →b. K(s) + H 2 O(l) →

A: The complete chemical equation has to be given.

Q: Predict the products of the reaction below. That is, complete the right-hand side of the chemical…

A: We have been given an inorganic reaction and we have been asked the products.of given reaction.…

Q: Predict the products of the reaction below. That is, complete the right-hand side of the chemical…

A: The question is based on the concept of chemical reactions. we need to complete the reaction…

Q: 32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur troxide. If 20 g of sulfur…

A: Mass of S = 20 gMass of Oxygen(O2) = 100 gMolar mass of S = 32.06 g/molMolar mass of O2 = 32…

Q: Give the name and formula of the compound formed from the following elements: (a) sodium and…

A: the compound is formed when two or more chemical elements are bonds together by a chemical bond. For…

Q: In the ammonia (NH) molecule of the figure, the three hydrogen (H) atoms form an equilateral…

A: You can find the center of mass of the 3 Hs first, then find the center of mass between that point…

Q: What is the volume of 3.5 moles of chlorine gas at standard temperature and pressure (STP)?  6.4 L…

A: A multiple choice question based on gas law, which is to be accomplished.

Q: Hydrated substances contain H2O as part of their formulas. When a hydrated substance is heated,…

A: The colour of anhydrous cobalt (II) chloride is sky blue. On exposure of moisture(water vapours), it…

Q: 21. Based on your understanding of the relationships between the structures and physical properties…

A: Metals have high melting point. Generally metals are hard except Li, Na and K. Metals are soluble in…

Q: CI Cl P Cl

A: Chemical formula of trichlorophosphene  = PCl3

Q: If magnesium ribbon is ignited what will be observed? We observed that it burns in the air with a…

A:

Q: 1. There are 2 possible ways for CuBr₂ to release Br₂: i) CuBr₂ → CuBr + 1/2 Br₂ or ii) CuBr₂ → Cu +…

A: CuBr₂ is a compound consisting of copper (Cu) and bromine (Br). The colors of CuBr₂, CuBr, and Cu…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.