32 Answered Questions for the topic Elements

10d

Redox Reaction Question

Identify the oxidizing agent and the reducing agent in the following redox reaction. Explain the answerBrO3- + I- + H+ ---> Br- + I2 + H2O

Practice #5- limiting reactant in grams

Which is the greatest amount of silicon tetraflouride in grams that can be produced 48 grams of HF and 92 grams of SiO2? Which reactant is limiting? How many grams of the excess reactant will be... more

04/16/21

In firefox console how can learn the inspector console to trigger click events on webpages.

Are there any good resources for Javascript console triggers of buttons. So far I learned I can press cmd+shift+c in mac to get element by clicking on the webpage this allows me to press esc to... more

10/31/20

Which element would have the lowest electron affinity?

Fluorine, Tellurium, Francium, Rhodium, Magnesium

04/29/20

Why is water (H2O) a liquid at room temperature while carbon dioxide (CO2) is a gas? What’s different about their structures that results in very different properties?

Why is water (H2O) a liquid at room temperature while carbon dioxide (CO2) is a gas? What’s different about their structures that results in very different properties?

Identify what is wrong with the given electron configurations and write the correct electron configurations...

based on the number of electrons. Identify the elements. a) 1s22s22p63s23p63d10b) 1s22s22p63s23p64s24d104p3

09/18/19

How large does a star need to be for its supernova to produce element 115

How large does a star need to be for its supernova or hypernova / collapsar to produce super heavy elements like 115?Also, how abundant are these stars in the universe?

09/01/19

Directional nuclear reaction

Is there a strong enough substance that could overcome the heat and pressure of a nuclear blast, while also directing that blast? Lets say with a concave structure attached to pod?I want to know,... more

05/20/19

Sequencing problem - Is it possible to solve this problem with the given information

I have a sequencing problem that I cannot find a way to solve using the three major formulas for finding sequencing elements. The difference between terms is given (1/2). The sum of the terms is... more

10/05/18

Stable Ions From Elements

Predict the most stable ions for the following elements:   Rb Sr Li Cs Kr

06/13/18

Given the following goals and materials, create a procedural that would allow the completion of the goal, then briefly explain why it would work.

Goal: To identify an unknown element    Materials: Lithium, Calcium, Aluminum, Carbon, Nitrogen, Oxygen, Iodine, Helium 
Elements

04/02/18

Metals and nonmetals are both good conductors.

Periodic table 

Don't understand the "Criss Cross Method for Predicting Formulas", can someone help?

I especially don't understand the crossing between PO₄⁻³ and Ba⁺², can someone please help?

11/15/17

what is the empirical formula?

the compound xylene consists of 90.49% C and the rest is hydrogen.What is the empirical formula?

11/14/17

determine the mass of each sample

1.16 mmol carbon disulfide
Elements

10/16/17

What is the smallest possible part of an element that still has all the properties of that element

FtftfyvghvhvhvhhvvhvyvyGuu

07/22/17

A hydrogen bomb releases 1x10^17 joules. How many bomb explosions are equal to the sun's energy output each second?

A hydrogen bomb releases 1x1017 joules. How many bomb explosions are equal to the sun's energy output each second?

05/31/17

Use the following equation to answer the following questions. (Show Work Please)

Equation: 2 Mg + CO2 = 2 MgO + C (already balanced)   71.66 g of Mg react with 91.25g of CO2. What is the limiting reagent in the reaction? What is the theoretical yield of MgO? Express your... more
Elements Chemistry Matter

05/31/17

Write the formula + include ALL states of matter (Show Work Please)

Aluminum nitrate in solution reacts with aqueous potassium hydroxide to produce aluminum hydroxide and potassium nitrate
Elements Chemistry

05/31/17

What are the products of this reaction? ( Show Work + Explain )

Li2SO4 + BaCl2    The product would be LiCl + BaSO4   I am pretty sure, but can you explain why please?
Elements Chemistry Equations

05/29/17

If 16.5 g of Al are reacted with 39.2 g of chlorine gas, then aluminum chloride is formed.

Which reactant is the limiting reactant? What is the theoretical yield?   Formula: 2 Al + 3 Cl2 = 2 AlCl3 (already balanced)   Show all work for the two questions please
Elements Chemistry Moles Grams

05/07/17

Limiting Reagents (Chemistry) Answer a-d + Show Work Please

Equation: Al2(SO3)3 + 6NaOH = 3Na2SO3 + 2Al(OH)3 (already balanced)   a) If 10.0 g of Al2(SO3)3 is reacted with 10.0 g of NaOH, determine the limiting reagent.   b) Determine the number of... more

10/30/16

List an element that fits in each of the following groups.

Halogen = Alkali metal =  Lanthanide series = Transition metal = Chalogen = Noble gas = Alkaline Earth metal = Actinide series =

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