Which two elements are least likely to react with each otherand form a compound? (1) A and G (2) D and G (3) J and M
(4) L and R

Answers

Answer 1

Answer:

Answer:

1. A and G

Explanation:

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Why is it correct to say seawater is a mixture.

Answers

It's a mixture of H2O + a soluble substance like, salt.

Answer:

It's a mixture of H2O + a soluble substance like, salt.

Explanation:

Calculate the molarity of the solution to 3 digits. 100. g of C12H22O11 (molecular weight = 342.28 g/mole) in 1.15 liters of solvent M

Answers

Answer:

0.254 M

Explanation:

The molarity is given by the formula M: Number of Moles/ Vol (L)

Number of Moles : 100 g/342.28 g/mol = 0.292 moles

M: 0.292 moles/ 1.15 L = 0.254 M to three significant figures

How to do balancing equations

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It's quite hard to explain without an example, but I'll give it a go:

Basically, you have to count the number of an element on one side of the equation, then count it on the other, and the aim of balancing the equation is to get the 2 values to be the same (as mass cannot be created or destroyed).

This involves multiplication of the molecule(s) on either side of the equation in order to balance the whole thing. Note this is not like maths, you dont have to do the same to both sides, but you do have to multiply out entire molecules - you cannot multiply just the H2 in H2O for example.

A reasonably basic example of this balancing is:

Fe + Cl2 = FeCl3

The first thing I notice is that there is an even number of Cl atoms on the left, and an odd number on the right, so the first thing I'll do is multiply the one on the right to get it to an even number, ie by 2.

Fe + Cl2 = 2(FeCl3)

Expanding that gives Fe2Cl6 (although you dont write it like that). So we need to get 6 Cl atoms and 2 Fe atoms by multiplying the left hand molecules by amounts if possible. If you look at that, we can achieve that, by multiplying Cl2 by 3, and Fe by 2.

2Fe + 3Cl2 = 2FeCl3
And there you have your balanced equation, you'll notice that the number of any given element has the same number of atoms on both sides of the equation.

How does the structure of the pencil relate to its function?

Answers

The structure is that it is long and has lead and it's function is to be able to be held and be written with

Final answer:

The pencil's slim, lightweight structure and graphite core, known for its unique layering of carbon atoms via sp²-hybrid orbitals, are essential for its function of writing or drawing.

Explanation:

The structure of a pencil is tightly linked to its function. The pencil is made of a slim wooden case which is lightweight and easy to grip, enabling convenient writing or drawing. This wooden case houses a graphite center, the 'lead' of the pencil.

Why graphite? It is important to consider the properties of graphite. Graphite is soft and slippery, which allows it to easily leave marks on paper. Its structure consists of layers of carbon atoms, each connected to three others in a planar arrangement through sp²-hybrid orbitals. This layering structure allows for the graphite to be gradually worn away as the pencil writes, leaving a trail on the page, while the pencil reverts to its equilibrium state due to the torque produced by its weight.

So, in simple terms, the slim size, lightweight nature, and graphite core (with its unique structure and properties) are integral to a pencil's function of writing or drawing.

Learn more about Pencil Structure and Function here:

brainly.com/question/11200443

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What is the definition of moral mass

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Answer:

In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance. The base SI unit for molar mass is kg/mol. However, for historical reasons, molar masses are almost always expressed in g/mol.

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Particles in a warmer substance have a v average kinetic energy than particles in the substance when it is cooler.