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3 years ago

1. Generally speaking, where on the periodic table are the elements that form ions requiring!

Chemistry

1 answer:

Artemon [7]3 years ago

7 0

Answer:

The middle, or the transitional metals

Explanation:

When naming elements, we use roman numerals to indicate what their charge is. The charge of an element is affected by their number of valence electrons (outermost electrons).

Transitional metals are generally multivalent, meaning that element has more than one possible number of valence electrons. This makes them have more than one possible charge. Roman numerals indicate which charge of that element is used/discussed.

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Someone please help me out ill mark you as brainlest

adelina 88 [10]

Answer:

There are two kinds of forces, or attractions, that operate in a molecule—intramolecular and intermolecular. Let's try to understand this difference through the following example.

Explanation:

We have six towels—three are purple in color, labeled hydrogen and three are pink in color, labeled chlorine. We are given a sewing needle and black thread to sew one hydrogen towel to one chlorine towel. After sewing, we now have three pairs of towels: hydrogen sewed to chlorine. The next step is to attach these three pairs of towels to each other. For this we use Velcro as shown above.

So, the result of this exercise is that we have six towels attached to each other through thread and Velcro. Now if I ask you to pull this assembly from both ends, what do you think will happen? The Velcro junctions will fall apart while the sewed junctions will stay as is. The attachment created by Velcro is much weaker than the attachment created by the thread that we used to sew the pairs of towels together. A slight force applied to either end of the towels can easily bring apart the Velcro junctions without tearing apart the sewed junctions.

Exactly the same situation exists in molecules. Just imagine the towels to be real atoms, such as hydrogen and chlorine. These two atoms are bound to each other through a polar covalent bond—analogous to the thread. Each hydrogen chloride molecule in turn is bonded to the neighboring hydrogen chloride molecule through a dipole-dipole attraction—analogous to Velcro. We’ll talk about dipole-dipole interactions in detail a bit later. The polar covalent bond is much stronger in strength than the dipole-dipole interaction. The former is termed an intramolecular attraction while the latter is termed an intermolecular attraction.

7 0

3 years ago

Pls help me out!! lol

IceJOKER [234]

Answer:

when something is boiling. the temperature increases quickly so B and D are eliminated. So its either A or C. My guess is A

6 0

4 years ago

How many milliliters of a 0.223 M KNO3 solution contain 0.250 moles of KNO3?

anyanavicka [17]

Answer:

1121.08 millilitres of 0.223 M $KNO_{3}$ solution contains 0.250 moles of $KNO_{3}$ .

Explanation:

The formula for molarity of a solution:

$Molarity=\frac{n}{V}\\ where,n=number\: of\:moles\\V=volume\:of\:solution\:in\:L$

Molarity = 0.223 M

n = 0.250 moles

$V=\frac{n}{Molarity}=\frac{0.250}{0.223}=1.12108L=1121.08mL$

Therefore, 1121.08 millilitres of 0.223 M $KNO_{3}$ solution contains 0.250 moles of $KNO_{3}$ .

6 0

3 years ago

What is the consecration of a solution that is made by diluting 50.0 mL of a 40.0 M NaCl solution to a final volume of 1000.0 mL

ira [324]

Explanation:

Given that:

V1 = 50mL

M1 = 40M

V2 = 1000mL

unknown:

M2 = ?

Solution:

Concentration is the number of moles solute in a solution.

Since the number of moles in the solute remains the same;

Concentration = $\frac{number of moles}{volume}$

number of moles = concentration x volume

Number of moles before and after the dilution remains the same;

M1 x V1 = M2 x V2

M1 is initial concentration

V1 is initial volume

M2 is final concentration

V2 is final volume

40 x 50 = M2 x 1000

M2 = 2M

learn more:

Molarity brainly.com/question/9324116

#learnwithBrainly

7 0

3 years ago

2. Write the chemical equation for the reaction NaOH Sodium Hydroxide AgNO3 Silver Nitrate

lys-0071 [83]

Answer:

AgNO3 + NaOH = AgOH + NaNO3.

Explanation:

Balancing Strategies: In this reaction, the products are initially NaNO3 + AgOH. However the AgOH would break down into Ag2O and H2O. This would give us NaNO3 + Ag2O + H2O as our products for the overall reaction.

8 0

3 years ago