Pls help :( <3333333

Answer:

B.

Explanation:

Answer:

SnCl2 is nonlinear due to the presence of lone pair of electrons on the central atom.....

Answer:

4.28g

Explanation:

Answer: 16 neutrons

Explanation: The atomic number for any element is the number of protons in its atomic nuclei. In a neutral atom, the number of electrons are the same as the number of protons. The atomic mass (mass number) is the sum of the protons and neutrons in the nucleus. Mass number can vary due to the fact that the number of neutrons can vary. Isotopes are named for their mass numbers.

So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number).

This isotope is phosphorus-31, which has atomic number 15.

I think the answer as communicating findings.

The scientific method is the use of various steps to solve the question and reach the solution. A chemist writing report for making a new compound is following the communication findings. Thus, option C is correct.

The scientific method has been the use of various procedures and steps that involves observation, experimentation, measurement, testing, etc. to reach the solution for the formulated hypothesis. It allows the understanding of the solutions to the question asked.

It also includes communicating findings that include the writing of a report that has been using the scientific method to research the subject matter and has been constituted of introduction, results, experimentation methods, discussions, observations, etc.

A chemist writing a report shows communication findings as they are reporting the hypothesis and the scientific method to the other scientists and uses the knowledge to formulate the experiment.

Therefore, option C. communicating findings is the correct option.

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Answer:

it 2.0 aka b

Explanation:

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The mas.s of evaporating dish is 21.345g B.

Answer:

2000 L

General Formulas and Concepts:

Atomic Structure

Gas Laws

Ideal Gas Law: PV = nRT

Explanation:

Step 1: Define

[Given] 8.8 moles gas

[Given] 0.12 atm

[Given] 56 °C = 329.15 K

Step 2: Solve for V

Step 3: Check

Follow sig fig rules and round. We are given 2 sig figs.

1981.7 L ≈ 2000 L

Answer:

Beryllium

Explanation:

Answer:

The combined gas law combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadro's law is added to the combined gas law, the ideal gas law results.

Explanation:

Hope this helps

~Bre

Answer:

Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. Therefore, there must be the same number of atoms of each element on each side of a chemical equation.

Explanation:

Answer:

When magnesium ions are broken off the solid lattice and go into solution, there is enough attraction between the 2+ ions and the water molecules to get co-ordinate (dative covalent) bonds formed between the magnesium ions and lone pairs on surrounding water molecules… making it more conductive than sodium.

Answer:  I found a image to lewis structure for the molecule N2O.

I think this might help you to draw a lewis structure.

Explanation:

Answer:

One molecule

Explanation

But there is three different atoms forming this one NaOH. The three atoms are Na, O and H, that is one sodium, one oxygen, and one hydrogen.

Answer:

please give me brainlist and follow

Explanation:

when using first method for regular shape and 2nd method for an irregular shape. ... It will not work because the weight is different.

Answer:

12 moles of water (E)

Explanation:

The first step is to see that the equation is balanced. It is now, but you did something strange to the Mg3N2.

Mg3N2(s) + 6H20(l)   ======>  3Mg(OH)2(s) + 2NH3(g)

What the equation is telling you is that 1 mol of Mg3N2 requires 6 moles of water for the reaction to occur.

So 2 mols of Mg3N2 would require 6*2 mols of water to react.

The answer is 12 moles of water

Answer:

2p

Explanation:

Boron is a member of group 13. The highest energy sub-level is usually found on the outermost shell of the atom of the element involved.

For a group 13 element, its outermost shell configuration is ns2 np1. The electronic configuration for boron is; 1s2 2s2 2p1.

Hence the highest energy sub-level in boron is 2p.  

Answer:

Cordera is colder than Hillsdale.

Explanation:

They may be at a similar latitude. But you also have to consider the currents nearby the location.

The prevailing wind closer to the equator which carries warm current hits Hillsdale which is why it follows the coastline of the continent. However, for Cordera prevailing winds carrying cold currents hits the continent and follows or hits the coastline of Cordera.

Answer:

2. [tex]V_2=17L[/tex]

3. [tex]V=82.9L[/tex]

Explanation:

Hello there!

2. In this case, we can evidence the problem by which volume and temperature are involved, so the Charles' law is applied to:

[tex]\frac{V_2}{T_2}=\frac{V_1}{T_1}[/tex]

Thus, considering the temperatures in kelvins and solving for the final volume, V2, we obtain:

[tex]V_2=\frac{V_1T_2}{T_1}[/tex]

Therefore, we plug in the given data to obtain:

[tex]V_2=\frac{18.2L(22+273)K}{(45+273)K} \\\\V_2=17L[/tex]

3. In this case, it is possible to realize that the 3.7 moles of neon gas are at 273 K and 1 atm according to the STP conditions; in such a way, considering the ideal gas law (PV=nRT), we can solve for the volume as shown below:

[tex]V=\frac{nRT}{P}[/tex]

Therefore, we plug in the data to obtain:

[tex]V=\frac{3.7mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm}\\\\V=82.9L[/tex]

Best regards!

Explanation:

0.3,1.2, or 2.1. sorry if it's wrong.

Answer:

Nichrome

Answer: Hot water system coils are commonly made up of metal alloys which are a combination of two or more elements. The most commonly used metal alloy is “Nichrome”. Nichrome is an alloy of nickel (80%) and chromium (20%).

The molarity of HCl will be "1.10 M".

According to the question,

Moles of solute,

Solution,

As we know the formula,

→ [tex]Molarity = \frac{Moles \ of \ solute}{Liters \ of \ solution}[/tex]

By substituting the values, we get

→                 [tex]= \frac{0.220}{0.2}[/tex]

→                 [tex]= 1.10 \ M[/tex]

Thus the above approach i.e., "option d" is correct.

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Answer:

-4.4 kJ

Explanation:

Answer:

Option H

Explanation:

We can get the temperature of the gas by applying ideal gas law,

PV = nRT

Here, P = Pressure of the gas

V = Volume of the gas

n = Number of moles

R = Gas constant

T = Temperature

By substituting the values in the given equation,

5.40 × 120 = 4 × 0.0821 × T

648 = 0.3284T

T = [tex]\frac{648}{0.3284}[/tex]

T = 1973.20

   ≈ 1973 K

Therefore, temperature of the gas is 1973 °K

Option H will be the answer.

The bond between hydrogen (H) and oxygen (O) (option 3: H-O) has the highest electronegativity difference (1.24). Therefore, the H-O bond is the most polar among the given choices.

The polarity of a chemical bond depends on the electronegativity difference between the two atoms involved. The greater the electronegativity difference, the more polar the bond.

Let's compare the given bond options:

(1) C-O: The electronegativity of carbon (C) is approximately 2.55, and the electronegativity of oxygen (O) is approximately 3.44. The electronegativity difference is 0.89.

(3) H-O: The electronegativity of hydrogen (H) is approximately 2.20, and the electronegativity of oxygen (O) is approximately 3.44. The electronegativity difference is 1.24.

(2) F-F: Fluorine (F) is the most electronegative element with an electronegativity of 3.98. Since both atoms in this case are fluorine, the electronegativity difference is 0.

(4) N-H: The electronegativity of nitrogen (N) is approximately 3.04, and the electronegativity of hydrogen (H) is approximately 2.20. The electronegativity difference is 0.84.

From the options provided, the bond between hydrogen (H) and oxygen (O) (option 3: H-O) has the highest electronegativity difference (1.24). Therefore, the H-O bond is the most polar among the given choices.

Learn more about polar bond from the link given below.

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Answer:

C. Alpha

Explanation:

I did it and I got it right

Answer: C. Alpha

Explanation: