Which of the following factors affects the speed at which a candle burns? a) air temperature b) type of candle c) atmospheric pressure d) the length of the fuse Give two other factors that affect the speed at which the candle burns

Q: Although there are energetically advantages in recycling aluminum Discuss the belief that secondary…

A: Answer is given below

Q: How many grams of oxygen must combust to produce 20 kJ of energy?

A: The combustion reaction is,

Q: What are the benefits of the process of Gas reburning ?

A: ANSWERE IS GIVEN BELOW :

Q: Describe why ozone is more reactive than oxygen gas

A: Oxygen gas exists as diatomic molecule and its molecular formula is O2. But ozone gas exists as…

Q: It requires 1200 kg of coal to produce the energy needed to make 1.0 kg of aluminum metal. If a…

A: A single soda can requires approximately 15 g of aluminum. The mass of aluminum required to produce…

Q: Write a brief summary of what happens when potassium hydroxide is added to aluminum foil

A: ALUMINIUM DISSOLVE IN STRONG BASES LIKE  NaOH,KOH

Q: The type of The ato

A: A chemical bond can be defined as a force of attraction between ions, atoms or molecules that…

Q: Why ozone behaves as oxidising agent for metals and non metals?

A: Ozone is an allotropic form of oxygen.  The chemical formula of ozone is O3.Ozone acts as a powerful…

Q: 1. Enumerate the classification of fires. Briefly discuss each.

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Which of the following is not a heating Equipment? а. Electric Furnace O b. Desiccator С. Burners O…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: Which elements contribute to the spread of a fire?

A: In presence of oxygen any fuel start to burn. Any hydrocarbon (fuel) in presence of oxygen it…

Q: What is the major disadvantage of HFCs as replacements for CFCs?

A:

Q: Define fire

A: Fire is used for numerous purposes all over the world. It is very useful to humankind but it is also…

Q: 6. Which of the following is NOT one of the uses of hydrogen gas? (A) Production of hydrazine (N2H4)…

A: As you have posted a question with multiple questions, we will solve the first part for you. To get…

Q: Which of the following changes would result in an increase of nitrogen dioxide, NO,? N204(e)…

A: Given- N2O4(g) <->2NO2(g).           ∆H°=58kJ

Q: Write the experimental protocol as well as the measures to be taken in the experiment to demonstrate…

A: Rusting is an oxidation process so it requires both water and air to cause rusting of irom…

Q: Reaction with bromine  Get two test tubes and put 10 drops Toluene to each of the tubes  Add 5…

A: Reaction of toluene with bromine with iron catalyst in presence and absence of light.

Q: Balance the equation and determine the volume of oxygen in liters at STP required to burn 227 g of…

A: Ethanol (C2H5OH) burns in air: The equation is to be balanced and the volume of oxygen in liters at…

Q: .Why is potassium nitrate also in airbags? 6. Write the balanced equation for the reaction between…

A: Interpretation -  To tell about why potassium nitrate also in the airbags . To write the balance…

Q: Assuming an efficiency of 43.20%,43.20%, calculate the actual yield of magnesium nitrate formed from…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: The Rebirth of Electric Cars Page 47 1. Why are gasoline powered automobiles so popular for most of…

A: Electric cars are operated by battery while gasoline powered cars are operated by fuels.

Q: If 6.43 A is applied for 79 minutes, what mass of Cr(s) will be produced?     ____ g Cr

A: Oxidation is the process that involved the loss of electrons and oxidized to cation.  Hence when a…

Q: The density of SIO2 is 2.20 g/cm3. The density of elemental silicon is 2.33 g/cm3. How much volume…

A: Density ( d ) is the ratio of mass of the substance ( m )  to its volume ( V ) . i.e  density (d) =…

Q: Which substance CANNOT decolorize bromine water? Substance A Substance B O Substance C O Substance D

A: Organic chemistry is branch of chemistry in which organic reactant react to form organic products.

Q: Why do boiling potatoes react to hydrogen peroxide whereas raw potatoes do not?

A: It is an experiment that is performed in the lab.

Q: What must be done to improve the health and safety (environment) of coal miners and those who use…

A: Explanation:     Improve Coal:.         Coal is a very valuable source not only for thermal energy…

Q: Calculate the volume of CO2  released from heating and decomposing 88 g of sodium bicarbonate.…

A: The general reaction on decomposition of sodium bicarbonate is as follows,

Q: Can an acidic solution oxidize a piece of aluminum?

A: Can an acidic solution oxidize a piece of aluminum has to be given.

Q: 1. What process does the purple arrow indicate? Atmospheric CO2 Forest fire Land plants Land animals…

A: In the given picture, the violet arrow is pointing to carbon dioxide gas going towards trees. Plants…

Q: When tin comes into contact with oxygen in the air, tin (IV) oxide, SnO2 is formed. Sn (s) + O2 (g)…

A:

Q: Breathing air that contains 4.0 % by volume CO2 over timecauses rapid breathing, throbbing headache,…

A:

Q: What property of activated charcoal makes it a good decolorizing agent?

A: Activated charcoal is also called activated carbon.Charcoal is obtained from coal, coconut shells…

Q: In the formation of copper(11) oxide from copper(1) hydroxide mixture, what do we need to do to…

A: We have to tell the formation of copper (II) oxide from the copper (II) hydroxide mixture. The given…

Q: Q2/Why are two vessels used in nitrogen generation?

A: Nitrogen gas is widely used in many companies in many different ways. There is a nitrogen generator…

Q: (b) The nitric oxide molecule undergoes photoionization in the upper atmosphere. (c) Nitric oxide…

A: Balanced chemical equations for the given reactions are given in the following step.

Q: Why should a magnesium ribbon be cleaned before burning in air?

A:

Q: Draw the schematic diagram of group 4 cations. Write the chemical reactions after the diagram

A: Qualitative analysis of group 4 cations

Q: in ancient times iron was heated with leather. Why?

A: In ancient times, fire heated method is used. It leaves an identifying mark by pressing a heated…

Q: List the five classes of fires.

A:

Q: If workers in a distant slone quarry are blasting, why can you feel the explosion in your feet…

A: Quarry blasting It is a process of breaking the rocks generally by the use of explosives for the…

Q: Why does the lit splint extinguish when it approaches a beaker filled with dry ice. Hint: What two…

A: