Convert 15.0 grams of H2 to molecules of H2.

Answer:

The answer should be 60%.

Answer:

40% is correct

Explanation:

Remember these followings :-

Acid + Base = salt + water

Acid + metal = salt + hydrogen

Acid + carbonates = salt + water + carbon dioxide

Base + ammonium salt = salt + ammonia + water

Base + acidic oxide = salt + water

I hope that you will be clear via these formulas.

Answer:

A

Explanation:

Answer:

In writing the electron configuration for nitrogen the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for N goes in the 2s orbital. The remaining three electrons will go in the 2p orbital. Therefore the N electron configuration will be 1s22s22p3.

Explanation:

hope you get it right:)

Answer:

the electron configuration for N will be 1s^2 2s^2 2p^3

The alkyl halide that forms the alkene shown as the only  product in an elimination reaction is bromomethyl cyclohexane.

An elimination reaction is a reaction in which two atoms are removed to create a double bond. Elimination reaction is a type of reaction that is common to alkyl halides.

In this reaction, a hydrogen atom and a halogen atom are both removed to yield a double bond. The structure of the product depends on the structure of the reactant alkyl halide.

Bromomethylcyclohexane shown in the image attached yields the alkene product in the image attached as the only product when it undergoes elimination reaction.

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Answer:

Chemical bonds form when the valence electrons of one atom interact with the valence electrons of another atom

Answer:

di ko maintindihan anggulo ng isinulat

Limiting factor- Food, Pollution, Predators.

Outcome variable (dependent variable): Cricket Frog (population)

Control group: Cricket Frogs in the Florida Everglades without changes in or manipulation of the population.

Answer:  d. Cyolite

Explanation:

a.bauxite   - Aluminum ore ✅

b.haematite - Iron ore  ✅

c.calamine - an ore of zinc  ✅

d.cyolite​ -   ❌  the ore is cryolite

✅ - is an ore

❌ - not an ore

The following reaction gives a product with the molecular formula C₄H₈O₂. The diagram of the structure of the product can be seen in the image attached below.

The reaction between C₂H₂(ONa)₂ and C₂H₄Br results in the formation of the product C₄H₈O₂ and 2NaBr.

This reaction undergoes an SN₂ mechanism since there is no stable carbocation formed. In the reaction -O⁻Na⁺ attacks the ortho position in C₂H₄Br to form C₄H₈O₂.

In  SN₂ mechanism is a nucleophilic substitution reaction where one bond is formed while another one is broken simultaneously.

The mechanism for the reaction can be seen in the image attached below.

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Answer:

its c  I truly believe that it is c

Explanation:

Answer:

The answer is 375.54 g of AgBr

Explanation:

Mass (g) = Concentration (mol/L) x volume (L) x Molecular Weight of AgBr (g/mol)

Mass = 2M x 1L x 187.77 g/mol

Mass = 375.54g

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

Dalton turned Democritus' views on atoms into a scientific theory by employing experimental methods. Atoms can join or detach during chemical processes, but they never transform into a different atom.

Dalton was an excellent polymath, a natural philosopher, and a real scientist. His thorough investigations prompted him to suggest an early atomic theory for which exceptions would be difficult to uncover today:

Dalton offered the following:

Atoms are microscopic particles that make up elements. Atoms of the same element have the same size and mass; however, atoms of other elements have varying sizes and masses when compared to atoms of other elements. Subdivision, creation, and destruction of atoms are all impossible.

All of these ideas were developed after a great deal of testing. Other researchers may replicate his work, and new findings could be included into this atomic idea.

Democritus, on the other hand, was a 5th-century BC Greek philosopher. He conducted no experimental work as far as we know, and none of his publications have survived. He postulated that matter was made up of a single indivisible element known as an atom; the word atom originates from the Greek word oos, which meaning "uncuttable" or "indivisible." So the name atom might be a homage to Democritus.

Answer:

How Radiation Affects Your Body. Radiation can damage the DNA in our cells. High doses of radiation can cause Acute Radiation Syndrome (ARS) or Cutaneous Radiation Injuries (CRI). High doses of radiation could also lead to cancer later in life.

Because radiation kills rapidly dividing cells (which is why we use it to treat fast-growing cancer cells), radiation exposure most increases the risk of cancers of rapidly dividing cells — leading to leukemia, lymphoma, breast cancer, bladder cancer, colon cancer, liver cancer, lung cancer, esophageal cancer, ovarian

Explanation:

Answer:

Microwaves are best suited because

they have a higher frequency and small wavelength

Satellite communication and Earth observation from space benefit from microwaves that can pass through haze, light rain, snow, clouds, and smoke. Because they can penetrate the atmosphere, microwaves are used. Small wavelength and high frequency is employed for this.

Microwaves are radio waves with short wavelengths and frequencies in the gigahertz (GHz) range. They can send signals over great distances without any data loss thanks to their high frequency. Without producing signal overlap or interference, they may carry a wide range of frequencies.

Electromagnetic radiations include radio waves and microwaves. In communication, both are utilized. Television and radio programs are transmitted by radio waves, but mobile phones and Wi-Fi use microwaves. Radio waves are one of the several alternatives for satellite communication.

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The answers to the questions are as follows;

Question 1:

Since Nitrogen has 5 Valence electrons, it needs 3 electrons to attain it's octet configuration. As such, it gains 3 electrons.

Question 2:

The quantity which determines how two atoms bond is The difference in their electronegativities.

Question 3:

This is because the elements have filled Valence levels.

Question 4:

The ion which has a stable Valence electron configuration is potassium (K) with a 1+ charge

Question 5;

The chemical formula which represents a polyatomic ion is; ClO-

1bonding and 3non-bonding

(Refer to the attachment for structure

Answer:

Temperature and Pressure

Explanation:

Temperature and pressure cause change in volume.

So any change in volume will alter the ratio of density as given by equation of density.

Density = mass/ volume

Change in volume will alter the ratio.

Kindly mark it branliest if the answer is little bit satisfying.

Answer:

The mixture has no fixed composition.

To form a mixture energy is neither produced nor evolved.

The mixture has no fixed melting points and boiling points.

the Mixture retains the properties of its components.

Components of mixtures can be separated by simple physical methods.

The vapor pressure of a liquid and the prevailing atmospheric pressure,

determines the boiling point temperature.

The vapor pressure of the acetone is the same in both containers because

the temperature is the same.

Reasons:

The vapor pressure of a liquid is the pressure at which the number of

molecules entering the gaseous phase are in (dynamic) equilibrium with

the number of molecules entering the liquid phase.

The factors that affect vapor pressure are;

Changing the surface area changes the instantaneous concentration of

molecules of vapor above the liquid, however, an equilibrium vapor

pressure is reached with time as more molecules enter or exits the liquid

(or solid) due being over or under saturated.

Therefore, the surface area of the liquid has no effect on a liquid's vapor

pressure therefore;

The vapor pressure in both containers will be the same because the temperature is the same.

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Answer:

can't help you sorry bye

Answer:

b is right answer because xylem provide nutrition and water to the plant

Answer:

D. Describe the limitations in detail in their final report.

Explanation:

Answer:

D. Describe the limitations in detail in their final report.

Answer:

Every amino acid also has another atom or group of atoms bonded to the central atom known as the R group. This R group, or side chain, gives each amino acid proteins specific characteristics, including size, polarity, and pH.

Answer:

Objectives(s):  

In your own words, what is the purpose of this lab?  

To teach me about chemical compounds  

Hypothesis:  

In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment. If you combine two certain compounds, then it will make a new compound.  

Procedure:  

The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.  

Data:  

Record the composition of each of your compounds below. Be sure to include the number of atoms for each element. An example has been supplied for you.  

Compound Name  

Chemical Formula  

Sodium (Na)  

Atoms  

Calcium (Ca)  

Atoms  

Hydrogen (H)  

Atoms  

Oxygen (O)  

Atoms  

Carbon (C)  

Atoms  

Chlorine (Cl)  

Atoms  

Ex: Sodium  

hypochlorite  

NaClO  

1  

0  

0  

1  

0  

1  

Carbon Tetrachloride  

CCl4  

0  

0  

0  

0  

1  

1  

Water  

H2O  

0  

0  

1  

1  

0  

0  

Calcium Hydroxide and Hydrogen Gas  

Ca(OH)2 + H2  

0  

1  

1  

1  

0  

0  

Sodium Hydride  

NaH  

1  

0  

1  

0  

0  

0  

Sodium Hydroxide  

NaOH  

1  

0  

1  

1  

0  

0  

Chlorine Dioxide  

ClO2  

0  

0  

0  

1  

0  

1  

Hydrogen Chloride  

HCl  

0  

0  

1  

0  

0  

1  

Table Salt  

NaCl  

1  

0  

0  

0  

0  

1  

Bleach  

NaClO  

1  

0  

0  

1  

0  

1  

Conclusion:  

Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.  

Using two to three sentences, summarize what you investigated and observed in this lab. I investigated how chemical compounds work and what to use to put them together.  

Why do you believe knowing how elements and compounds react together is essential in everyday matters? So, you can cook and stop injuries, these two things happen a lot in day-to-day life.  

Some elements are more "reactive" than other elements; why do you think this is? Because certain elements in the compound may react more to fire or water and many other elements.  

Choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. Because if you add all the atoms, put in that’s the total amount. For example, water has one hydrogen atom and one oxygen atom, so water has two atoms.  

Is it possible for two different compounds to be made from the exact same two elements? Why or why not? With a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds, or do we have many compounds in this world? Yes, it is possible like water and hydrogen peroxide. The formula of water is H20 but hydrogen peroxide has one more oxygen-H202.  

Explanation:

Answer:

b and c

Explanation:

did it on edge

To determine the molecules of butane we can either use multiple steps or use a combined equation based on the following formulas:

Molecules of butane = Moles × Avogadro's Number

Moles of Butane = Mass ÷ Molar Mass

Mass of Butane = volume × Density

∴ Molecules of butane

   = [(volume × Density) ÷ Molar Mass]  × Avogadro's Number

   = ([(25.0 ml × 0.6011 g/ml) ÷ 58.12 g/mol] × (6.022 × 10²³ molecules/mol))

   = 1.557 × 10²³ molecules

Answer:

1.Frequency

2.Amplitude

3.Wavelength

4.Medium

5.Back and Forth

6.Up and Down

Explanation:

CORRECT ME IF I'm wrong