Chemistry High School

Which of the following can form a hydrogen bond with the HF molecule?

Which Of The Following Can Form A Hydrogen Bond With The HF Molecule?

Answers

Answer 1

Answer:

helium

(He)

Explanation:

helium

(He)

Related Questions

What type of front is created when a warm air mass moves in to replace a
retreating cold air mass?

Answers

The type of fron created is a "warm" front.

• An atom of _________ has an atomic mass of ______ because it has ______ protons and _____ neutrons ?

Answers

Answer:

carbon 12 6 6

Explanation:

When the temperature of the air in a hot air ballon increases, what happens to the volume of the gas?

Answers

Answer:

As the temperature increases, the gas particles absorb more heat energy. They speed up and move farther away from one another. So the increase in temperature causes an increase in volume. (Boyles Law)

An element in group 2 will form ionic bonds and with

Answers

Answer:

With an element from group 16

Explanation:

Because the elements from group 2 have 2 valence electrons, and the elements from group 16 need to get more 2 electrons to get stable

what is the percent of phosphorus by mass in phosphoric acid h3po4

Answers

Answer: 31.61 %

Explanation:

% phosphorus by mass

            = (mass of phosphorus ÷ mass of phosphoric acid) × 100%

            = (30.974 g/mol ÷ 97.994 g/mol) × 100%

          =  31.61 %∴ percent of phosphorus by mass in phosphoric acid 31.61%.

Someone pls help me I will mark you as brain

Answers

Answer:

1st one is the answer water cannot be purified by nature pls add me in brainliest

Help me pls I will mark you as brain

Answers

Answer:

D. 1, 2, and 3

Explanation:

When piece of very hot metal releases energy into a cup of water, if the temperature of metal drops
by 426.7°C, and the final temperature of the metal is 31.2°C, what was the initial temperature of
the metal?

Answers

Answer: The answer is 457.9

Explanation: Realistically all you have to do is add both of the temperatures and then you can figure out the original heat. Since the heat drops 426.7 degrees and it comes to 31.2 degrees its 426.7 + 31.2 = 457.9.

Which change is likely to happen to an atom of the element strontium (Sr) during bonding?

(1 point)

It will gain electrons, forming a positive ion.
It will gain electrons, forming a positive ion.

It will give up electrons, forming a negative ion.


It will give up electrons, forming a positive ion.


It will gain electrons, forming a negative ion.

Answers

Answer: It will give up electrons, forming a positive ion.

During bonding, strontium atom will give up electrons, forming a positive ion.

STRONTIUM:

Strontium (Sr) is an element in group 2 of the periodic table. Just like every other element in group 2, strontium posseses two valence electrons in its outermost shell.

Strontium will undergo bonding with other atoms by losing its two (2) valence electrons to form a cation i.e. a positively charged ion.

Therefore, strontium atom will give up electrons, forming a positive ion when it undergoes bonding.

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Patterns are everywhere in science. Is there a pattern in how one can predict how many covalent bonds an atom will form? Explain your reasoning or provide evidence to support your answer.

HELP

Answers

Actual answer: 6

Well I also need help with this, this should help the both of us:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

Explanation:

The first two period elements can form maximum 4 covalent bonds. However, third or higher period elements can make higher number of bonds for example; SF6.

Meat or fish spoilage is often due to spoilage bacteria which utilize. to grow in population.
glucose and free amino acids.
glucose
free amino acids
sulfides

Answers

Answer:

glucose and amino acids

Explanation:

Air pressure is greatest near the surface of the Earth in the _______.



Question 7 options:

Thermosphere


Mesosphere


Troposhere


Exosphere

Answers

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Air pressure is greatest near the surface of the Earth in the Troposphere .

The Troposphere because the troposphere contains about half of all the air in the entire atmosphere

the rays produced in a cathode tube are

Answers

Answer:

Electrons

Explanation:

Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”

The rays produced in a cathode tube are electrons which are present in the shells surrounding the nucleus of an atom.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Suppose it takes 5 minutes for half of your sample to radioactively decay. If you started with 80 atoms, and have only 5 radioactive atoms left, how many half-lives have occurred?

Answers

4 half lives. If half decay each five minutes 80/2=40 40/2=20 20/2=10 10/2=5

The atomic mass of hydrogen is 1. How many protons does a hydrogen atom have?

Answers

1 because the atomic mass is how many protons an atom has

PLS HELP ASAP!
How many years?

The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is 5.73×103 years.

A wooden artifact in a museum has a 14C to 12C ratio that is 0.745 times that found in living organisms. Estimate the age of the artifact.
use graph

Answers

Answer:

about 5 years i think

Explanation:

I've tried all the methods i know

it's about 5 years

hope it helps

The age of the artifact is equal to 2.5 × 10³ years when the half-life of carbon- 14 is 5.73 × 10³ years.

What is the half-life period?

The half-life of a radioactive element is defined as the time that is required to decrease the original quantity of a radioactive isotope to half after decay.

The half-life of a radioactive isotope is the feature of the element and does not depend upon the actual amount of the radioactive isotope.

Given, the ratio of the initial and left amount of  ¹⁴C is :

N = 0.745 N₀

The half-life period of the ¹⁴C isotope = 5.73 × 10³ years

The rate constant of the decay of radioisotope can be calculated from the below-mentioned formula:

[tex]\displaystyle k=\frac{0.693}{t_{1/2}}[/tex]

[tex]\displaystyle k=\frac{0.693}{5.73 \times 10^3}[/tex]

k = 0.123 × 10⁻³ yr⁻¹

The age of the artifact can be calculated as:
[tex]\displaystyle t =\frac{2.303}{k} log\frac{N_0}{N}[/tex]

[tex]\displaystyle t =\frac{2.303}{0.123\times 10^{-3}} log\frac{N_0}{0.735 N_0}[/tex]

t = 2.5 × 10³ years

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A. Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same.
B. Changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the same.
C. Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
D. Changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the same.

Answers

Answer:

changes can occur to physical properties of a substance, but the chemical composition of the

substance remain the same.

Answer:

Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.

Explanation:

I got 100% on edg quiz 2022

with increasing altitude, air density also increases... true or false

Answers

Answer:

false

Explanation:

False; because as altitude increases density decreases

How many grams in 2.33 mols of H20 (water)?

Answers

Answer:

41.9866

Explanation:

18.02x2.33

Hope this helps!

(please make me brainleist I need to level up)

how many oxygens are used per glucose molecule in glycolysis?

Answers

Answer:

0

Explanation:


A golf ball with a mass of 46 grams will accelerate five times as fast as a
pool ball weighing 130 grams. Which of Newton's laws is this an example of?

Answers

Answer:

Newtons first law

Explanation:

focre=mass x acceleration

I believe that the answer above mine is wrong. Newton’s second law states that force = mass x acceleration, not the first. This is an example of Newton’s SECOND Law. Hope this helps

ASAP PLEASE
What are the rules for naming binary compounds that are formed between nonmetals. Are these compounds ionic compounds or covalent compounds, explain why?

Answers

Answer:

Explanation:Compounds between Nonmetals and Nonmetals

Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.

# of Atoms 1 2 3 4 5 6 7 8 9 10

Prefixes Mono- Di- Tri- Tetra- Penta- Hexa- Hepta- Octa- Nona- Deca-

the compounds are covalent, not ionic

What is the name of this process?

Answers

Answer:

Fertilization

Explanation:

Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes forms a new organism.

does sulfuric acid have high or low electrical conductivity

Answers

Answer:

It has a high electrical conductivity, caused by dissociation through protonating itself, a process known as autoprotolysis. The comparable equilibrium constant for water, Kw is 10−14, a factor of 1010 (10 billion) smaller.

which of these is chemical property

Answers

chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.

How many Joules of energy are needed melt 40.0 g of ice?

Answers

answer: 334 J

explain: A total of 334 J of energy are required to melt 1 g of ice at 0°C, which is called the latent heat of melting.

Which diagram or diagrams represent a compound?

Answers

Answer:

A - X Only

Explanation:

2. In which sentence is the term heat used correctly?
A. Heat moves from a cold cup to warm tea.
B. A thermometer measures the heat in an object.
C. The heat from the hot cup warms my hands.
D. Warm soup contains more heat than cold soup does.

Answers

Answer:

c. The heat from the hot cup warms my hands

Option C, as 1. heat doesn’t move from cold to hot, 2. objects don’t “store” heat, 3, objects don’t contain heat either.

Which describes an atom that has fewer neutrons than protons and more electrons than protons?

A. negative compound
B. positive compound
C. positive ion
D. negative ion

Answers

D. negative ion
I hope this helps!!

the energy of an electron in a multielectron atom is determined by

Answers

Answer:

by principal quantum number (n) and azimuthal quantum number (l)

Explanation:

I used the web to answer so I'm not sure if this is right

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