The results of this lab experiment
the hypothesis.are answers correct

Answer:

Systemic Circulation

Explanation:

Answer:

Systemic Circuit

Explanation:

Answer: The number of phosphorus atoms in given amount of copper(II) phosphate is [tex]8.431\times 10^{24}[/tex]

Explanation:

We are given:

Moles of copper(II) phosphate [tex]Cu_3(PO_4)_2[/tex] = 7.00 mol

1 mole of copper(II) phosphate contains 3 moles of copper, 2 moles of phosphorus and 8 moles of oxygen atoms

Moles of phosphorus in copper(II) phosphate = [tex](2\times 7.00mol[/tex]

According to the mole concept:

1 mole of a compound contains [tex]6.022\times 10^{23}[/tex] number of particles

So, 7.00 moles of copper(II) phosphate will contain = [tex](2\times 7\times 6.022\times 10^{23}=8.431\times 10^{24}[/tex] number of phosphorus atoms.

Hence, the number of phosphorus atoms in given amount of copper(II) phosphate is [tex]8.431\times 10^{24}[/tex]

Answer:

B) a pipette

Explanation:

Also known as a graduated pipette, they vary in volume, with most measuring between 0 and 25.0 mL. A small pipette can be used for precise measurement of fluids.

Answer:

A. More O2, SO2, and SO3 would be produced.

Explanation:

Nitrogen Fixation because It's the process by which atmospheric nitrogen is converted either by a natural or an industrial means to form of nitrogen such as ammonia.

Answer:

Option (B)

Explanation:

Na2SO4 (aq) + CaCl2 (aq) → CaSO4 (s) + 2 NaCl (aq)

Answer:

beliefs, thoughts, ideas, and emotions

Explanation:

freedom of expression guarantees the freedom to express oneself without government censorship or media censorship.

Answer:

See explanation

Explanation:

The cold drink chiller is a cold substance which is inserted into a bottle of drink which contains warm liquid particles at a particular temperature.

Once the drink chiller is inserted, the liquid molecules around the drink chiller become cooler, denser and sink away from the drink chiller. Other warmer, less dense molecules of the liquid drink now replaces them around the drink chiller.

A convection current is thus set up for as long as the drink chiller is working.

Answer:

ok all you need is a little study

Explanation:

organic chemistry isn't something to worry about is something that is a very simple concept if you understand what you're doing so a little bit of studying will help you go through it and you really don't this is not the topics that you will really understand if you just go through it as once so there is no need to worry about organic chemistry it is very simple concept just learning you are a you are close just learn all those simple aspects alkane etc it's very easy

Answer:

[tex]{ \bf{Cu {}^{2 + } + 2e \: → \: Cu }}[/tex]

The reaction that occurs at the cathode of a given galvanic cell is:

Cu²⁺  + 2e⁻  → Cu

A galvanic cell can be defined as an electrochemical cell that converts the chemical energy of spontaneous redox reactions into electrical energy. The galvanic cell makes use of chemical reactions to generate electrical energy.

A galvanic cell consists of two half-cells and a salt bridge. Each half-cell further contains an electrode dipped into an electrolyte. When both electrodes are dipped in the same electrolyte, then there is no need for a salt bridge.

At the anode, an oxidation reaction occurs at this electrode. At the cathode, reduction occurs at this electrode. The anode has a negative potential with respect to the solution while the cathode has a positive potential with respect to the solution.

As in the question, the reduction of Cu²⁺ has a positive reduction potential. Therefore, the reduction of the copper will occur at the cathode.

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Answer:

6.25mol

Explanation:

Using the following formula;

Mole = mass ÷ molar mass

According to this question, there are 100 grams of methane (CH4)

Molar Mass of methane (CH4) = 12 + 1(4)

= 12 + 4

= 16g/mol

mole = 100/16

mole = 6.25moles

Therefore, there are 6.25moles of methane in 100g

The half-reaction is Zn → Zn⁺² + 2e⁻ which is most likely occur at the anode to produce a spontaneous reaction.

Hence, option (B) is correct answer.

A reaction which occurs without the intervention of outside is called Spontaneous reaction.  The reaction is Spontaneous when the Δ G < 0 and [tex]E^{\circ}_{\text{cell}}[/tex] > 0.

Cathode where the reduction occurs. Anode where the oxidation take place.

Cathode: Ni⁺² + 2e⁻ → Ni

Anode: Zn → Zn⁺² + 2e⁻

______________________

Zn + Ni⁺² → Zn⁺²  + Ni

The above reaction is spontaneous reaction.

Thus, from the above conclusion we can say that half-reaction is Zn → Zn⁺² + 2e⁻ which is most likely occur at the anode to produce a spontaneous reaction.

Hence, option (B) is correct answer.

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Answer:

NO 2200! 800 proprobably

Explanation:

just did wrong

Answer:

800 kJ

Explanation:

An Arrhenius acid-base reaction forms a salt and water.

Arrhenius acid base reaction forms a salt and water.

Hence, option (B) is correct answer.

Arrhenius acid-base reaction is Arrhenius acid + Arrhenius Base means water + salt. When Arrhenius acid reacts with Arrhenius base it produce water and salt as product. This is known as neutralization reaction.

Thus, from the above conclusion we can say that Arrhenius acid base reaction forms a salt and water.

Hence, option (B) is correct answer.

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Answer:

The electrons of an atom are typically divided into two categories: valence and core electrons. Valence electrons occupy the outermost shell or highest energy level of an atom while core electrons are those occupying the innermost shell or lowest energy levels

Explanation:

i hope u get it :))

Answer:

Aluminum; [Ne]3s²3p¹

Arsenic; [Ar]3d¹⁰4s²4p³

Explanation:

Aluminum

From the periodic table, we have that aluminum, Al, is located in period 3, and group 3A of the periodic table

Therefore, the noble gas that comes before aluminum in the periodic table is neon Ne

The electronic configuration of aluminum is 1s²2s²2p⁶3s²3p¹

The electronic configuration of neon is 1s²2s²2p⁶

Therefore, the electronic configuration of aluminum in noble gas notation (Ne) is therefore;

[Ne]3s²3p¹

Arsenic

Arsenic is located after argon, Ar on the periodic table

The electronic configuration of arsenic is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³

The electronic configuration of argon is 1s²2s²2p⁶3s²3p⁶

The electronic configuration of arsenic in noble gas notation (Ar) is given as follows;

[Ar]3d¹⁰4s²4p³

Ok here's the deal

the answer is A: The products will contain exactly 2 Na atoms and 1 O atom.

Explanation:

thank me later space-ex kids

Your Question is complete but the options are very much confusing and contradicting. Below you will find the true and full content.

The correct answer for the given question about Enthalpy of vaporisation is ( Volume of liquid in L x 1000 g/L x ΔHvap cal/gm ) where ΔHvap = 540 cal/gm (in case of water).

The amount of energy (enthalpy) required to convert a portion of a liquid into a gas is known as the enthalpy of vaporisation, abbreviated as ΔHvap  and also referred to as the latent heat of vaporisation or heat of evaporation.

Let E be the energy required to calculate the energy required to vaporise a volume of liquid.

Then,

E = Volume of liquid in L x Density of liquid in gm/L  x ΔHvap in cal/gm

and E will came out in calorie.

E = Volume of liquid in L x 1000 g/L x 540 cal/gm --- (in case of water)

Thus we can conclude that to calculate the energy required to vaporise a volume of liquid, we can use the formula with ΔHvap which is E = (Volume of liquid in L x Density of liquid g/L x ΔHvap cal/gm ) and the answer will be in calorie.

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Answer:

Canxi hydroxit

Explanation:

Answer:

A- calcium hydroxide

Explanation:

Got it right on Edge.

Answer:

A) oxidizing agent is SO2

B) NaClO is the oxidizing agent

Explanation:

A) This is a redox reaction in which oxidation and reduction occur simultaneously.

Thus, in 2H2S(g) + SO2(g) -> 2H2O(l) + 3S(s);

H2S is reduced as follows;

H2S → S + 2H+ + 2e−

We can see that SO2 has been reduced while H2S gets oxidized since it has changed state from - 2 to 0 . Thus sulphur dioxide is the oxidizing agent.

B) SO2(g) + H2O(l) + NaClO(aq) -> NaCl(aq) + H2SO4(aq)

In this, SO2 undergoes oxidation and NaClO is the oxidizing agent

Answer:

Zn + 2HCl => ZnCl2 + H2

Explanation:

This equation represents salt formation or salt preparation. Thus not a neutralization reaction.

Answer:

24cm

Explanation:

The perimeter of a polygon is obtained by the sum of the length of each side of the figure.

The polygon of the problem has four sides with the following measurements:

8cm, 6cm, 4cm and 6cm.

That means the perimeter of this shape is:

8cm + 6cm + 4cm + 6cm =

Answer:

I think its D

Not too sure

The quantum numbers denote the position of an electron in the orbital. The angular momentum quantum number (l) and magnetic quantum number (ml) of the 3p orbital is I = 1; mI = -1, 0, 1. Thus, option D is correct.

The quantum numbers are conserved quantities used to describe the energy and the position of the electron in the atomic orbital. The azimuthal, principal, magnetic, and spin are the four quantum numbers.

The angular momentum quantum number (l) represents the orbital shape and depends on the principal quantum number, n. The magnetic quantum number (ml) represents the orientation.

If an electron is in a 3p orbital then,

n = 3

l = 1

ml = -1, 0, 1

Therefore, option D. 3p orbital contains I = 1; mI = -1, 0, 1.

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Answer:

Newton's second law

Explanation:

It is mentioning acceleration and mass

Newton's second law's equation = F = m*a

Hope u understood

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Thank You

Answer: increasing volume

Explanation: adding a catalyst would increase reaction time and increasing  INCREASING concentration definently makes reaction time alot faster increasing pressure actually makes it more concentrated, so no it is not

omg yees

eExplanation:

Answer:

Most of the hazards to people come from man-made structures themselves and the shaking they receive from the earthquake. The real dangers to people are being crushed in a collapsing building, drowning in a flood caused by a broken dam or levee, getting buried under a landslide, or being burned in a fire.

Hope this helps :> <3

Answer:

C2H6 OR C6H12O6 THE ANSWER

Explanation:

C2H6

!!!!!!!!!!

because it has both hydrogen and carbon as given in the word "Hydro-carbon"