Find relative molecular mass of copper (II) sulphate crystals

Answer:

p wave

Explanation:

The P wave is designated the primary preliminary wave because it is the first to arrive at a seismic station after an earthquake. It travels at a speed usually less than 6 kilometers per second in the Earth's crust and jumps to 13 kilometers per second through the core.

Answer:

Use friction

Explanation:

Friction is the force that stops something in motion. It also heats up something, creating a gravitational heat! A match striked against the lighter will create a flame, because of friction :)

Answer:

Location x is experiencing daytime because it is facing directly to the sun.

Explanation:

From a background understanding of the solar system, the side of the planet facing the sun will be experiencing daytime while the other side of the planet will be experiencing either partial or total darkness depending on the location.

From the diagram given above, we can see clearly that location x is facing the sun and as such, light rays from the sun lightens the location. When this happens, location x will be experiencing daytime.

In conclusion, location x is experiencing daytime because it is facing directly to the sun.

Answer:

Let's say you're using joules. In that case, you'd need 153.7kJ.

Answer:

6

Explanation:

Balancing a chemical equation involves making sure that the number of atoms of each element on the reactant side is equal to that on the product side. For example, if there are 5 moles of carbon on the reactant side, there must be 5 moles of carbon on the product side. This is in accordance to the law of conservation of mass.

However, to do the above, we make use of coefficients i.e whole numbers placed behind the elements. According to this question, an unbalanced chemical reaction is given as follows:

Fe(OH)3 + Li2S → LiOH + Fe2S3

As observed, the number of atoms on each side of the reaction are unequal. Hence, coefficients are used to balance the equation as follows:

2Fe(OH)3 + 3Li2S → 6LiOH + Fe2S3

From the balanced equation, 6 is used as a coefficient in front of LiOH.

Answer:

Blank 1: 1

Blank 2: 2

Blank 3: 1

Blank 4: 1

Explanation:

Assuming this is to balance the equation, write out the amount of each element you have on the reactants side and on the products side

Reactants                                                   Products

Ca 1                                                             Ca 1

C 2                                                              C 2

H 2                                                              H 4

O 1                                                               O 2

Comparing the two, we can see that hydrogen and oxygen have different amounts between reactants and products. Therefore, we need to multiply by some number to get the two equal. If we multiply the reactants by 2 we will get the correct amount in the products. So we put a 2 in front of the H₂O to signify this.

The balanced chemical reaction is

CaC₂ + 2 H₂O --> C₂H₂ + Ca(OH)₂

Answer:

Explanation:

1. Topic: Chemistry

ElementFirst Ionization Energy (kJ/mol) Lithium520Sodium496Rubidium403Cesium376According to the above table, which is most likely to be the first ionization energy for potassium?  

2. Topic: Chemistry, Atom

The correct set of four quantum numbers for the valence electrons of the rubidium atom   (Z=37)  is:  

3. Rubidium and cesium are pyrophoric. Here the term pyrophoric means:

Answer:

a flash flood

Answer:

Eutrophication is the enrichment of a body of water with excessive nutrients (nitrogen and phosphorus), which causes algal growth and subsequent decline of dissolved oxygen after decomposition.

Answer:

the acid used to neutralize the base in oder to form a salt and water

Answer:

Big False

Explanation:

As the magnets get closer, the stronger the magnetic field. The farther away, the less strength the field exhibits.

Answer:

According to the Environmental Paper Network's Paper Calculator, it takes about 32 million BTUs of energy to produce 1 ton of virgin paper fiber. To produce 1 ton of recycled paper, it takes about 22 million BTUs.

so the answer could be it takes less Btu to manufacture recycled products than new ones

What are the answers? I assume you meant to attach a photo.

Answer:

Thus, the one that is an example of mimicry that enables prey species to avoid predation is a harmless organism imitating the look of a harmful one (option B).

Explanation:

Answer:

1) There are Four Elements

Li , H , P , O

2) Li have 3 atoms.

3) H have 3 atoms.

4) P have 3 atoms.

5) O have 3 atoms.

Answer:

Like signs.

Explanation:

When two charges are like signs, a repelling force will occur.

Answer:

red

Explanation:

red shows if solution is acidic

Answer:

Explanation:

a is a physical change you could put the peices back together

b is a chemical change because you cant unburn wood  

c is a chemical change because you cant unbake it

d is a physicl change you could te your time and unmix it

Explanation:

PH=14-POH

=14-2.6

=11.4

Answer:

amylase

Explanation:

Answer:

The range of values of some property

Explanation:

A.pex, and the comments on the other answer

The best defines a spectrum is The range of values of some.

A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without gaps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum. It thereby became a mapping of a range of magnitudes (wavelengths) to a range of qualities, which are the perceived "colors of the rainbow" and other properties which correspond to wavelengths that lie outside of the visible light spectrum.

Spectrum has since been applied by analogy to topics outside optics. Thus, one might talk about the "spectrum of political opinion", or the "spectrum of activity" of a drug, or the "autism spectrum". In these uses, values within a spectrum may not be associated with precisely quantifiable numbers or definitions. Such uses imply a broad range of conditions or behaviors grouped together and studied under a single title for ease of discussion. Nonscientific uses of the term spectrum are sometimes misleading. For instance, a single left–right spectrum of political opinion does not capture the full range of people's political beliefs. Political scientists use a variety of biaxial and multiaxial systems to more accurately characterize political opinion.

Learn more about spectrum

https://brainly.com/question/23118593

#SPJ2

Answer:

the number of electrons

Answer:

a) pH = 13.447

b) pH = 13.176

Explanation:

Ba (OH)₂ is a strong base and ionizes completely in solution to give barium amend hydroxide ions.

The equation of the dissociation of Ba(OH)₂ is given below:

Ba(OH)₂ ----> Ba2+ + 2OH-

1 mole of Ba(OH)₂ produces 2 Moles of OH- ions

a) Before the addition of HCl, i.e.,when 0.00 mL of HCl has been added;

Concentration of hydroxide ions, [OH-] = 0.140 x 2 = 0.a) [OH-] = 0.100 x 2 = 0.280

pOH = -log [OH-]

pOH = -log (0.280)

pOH = 0.553

pH = 14 - 0.553= 13.447

b) pH when 15.0 mL HCl has been added

Moles Ba(OH)₂ = concentration × volume

Volume of Ba(OH)₂ = 82.0 mL = 0.082 L, concentration = 0.140 M

moles of Ba(OH)₂ = 0.082 x 0.140 = 0.01148 moles

moles OH- produced by 0.01148 moles of Ba(OH)₂ = 2 x 0.01148= 0.02296

moles HCl = 0.0150 L x 0.560 = 0.0084

moles of H+ produced by 0.0084 HCl = 0.0084

0.0084 H+ willnreact with 0.0084 moles of OH-

moles OH- left after the reaction = 0.02296 - 0.0084 = 0.01456 moles

total volume of new solution = (82 +15) mL = 97 mL => 0.097 L

Concentration of OH- ions = moles / volume

[OH-] = 0.01456 / 0.097 = 0.1501

pOH = -log [OH-]

pOH = -log (0.150)

pOH = 0.824

pH = 14 - 0.824

pH = 13.176

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Answer: according to ck12.org "Heat is the sum of all the kinetic energies of all the molecules of an object, while temperature is the average kinetic energy of the molecules of an object."

Explanation:

I hope this helped!

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Answer:

B. Ionic Compound

Explanation:

An ionic compound is that compound which contains a positively charged ion called CATION and a negatively charged ion called ANION. The cation loses or transfers electrons to the anion, hence, making the former (cation) positive and the latter (anion) negative.

A polyatomic ion is an ion that contains more than one type of atom e.g OH-, NO3²-, CO3²- etc. A polyatomic ion usually has an overall charge formed from the charges of the individual atoms that makes it up. For example, in OH-, the overall charge is -1.

Since a polyatomic ion can have an overall positive or negative charge, it must enter a reaction with another ion that complements it i.e. a negative polyatomic ion will react with a positive ion to neutralize its charge. Hence, this forms an IONIC COMPOUND. This is why most compounds with polyatomic ions are IONIC COMPOUNDS.

For example, CaCO3 is an ionic compound formed when Ca²+ (cation) reacts with the polyatomic anion: CO3²-

Answer:i dont know

Explanation:

I D

K

1. Accept and celebrate differences. One of the biggest challenges we experience in relationships is that we are all different. We can perceive the world in many ways. Certainly astumbling block that we come across when we try to build relationships is a desire or an expectation that people will think like we do and, in this way, it is so much easier to create a rapport. We feel more comfortable when we feel that people “get” us and can see our point of view. Life, however, would be very dull if we were all the same and, while we may find it initially easier, the novelty of sameness soon would wear off. So accepting and celebrating that we are all different is a great starting point.

2. Listen effectively. Listening is a crucial skill in boosting another person’s self-esteem, the silent form of flattery that makes people feel supported and valued. Listening and understanding what others communicate to us is the most important part of successful interaction and vice versa.

Active or reflective listening is the single most useful and important listening skill. In active listening, we also are genuinely interested in understanding what the other person is thinking, feeling, wanting, or what the message means, and we are active in checking out our understanding before we respond with our own new message. We restate or paraphrase our understanding of their message and reflect it back to the sender for verification. This verification or feedback process is what distinguishes active listening and makes it effective.

3. Give people your time. Giving time to people is also a huge gift. In a world where time is of the essence and we are trying to fit in more than one lifetime, we don’t always have the time to give to our loved ones, friends, and work colleagues. Technology has somewhat eroded our ability to build real rapport and we attempt to multi-task by texting and talking at the same time.

Being present in the time you give to people is also important, so that, when you are with someone, you are truly with someone and not dwelling in the past or worrying about the future. The connection we make with other people is the verytouchstone of our existence, and devoting time, energy, and effort to developing and building relationships is one of the most valuable life skills.