TEST QUESTION FOR CHEMISTRY GENIUSES ONLY...

Answer:

MOUTHWASH lol lol lol lol.  im just kidding heres the answer Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.

Answer:

Sexual Reproduction has to include 2 parents and it can cause different  genetic variety. While asexual reproduction is the parent (1) making copies of itself which has no genetic variety  (mainly single celled organisms like protists and such)

Explanation:

My explanation is your answer

Answer:

the pH of the pond is 4.0963

Explanation:

 Given the data in the question;

4FeS₂(s) + 11O₂(g)  ------>  2Fe₂O₃(s) + 8SO₂(g)

and oxidation of sulfur dioxide to trioxide

SO₃(g) + H₂O(l)  --------> H₂SO₄(aq)

given that; coal = 61.7 metric tons = 61700 kg

1.20 % by weight S, therefore mass of sulfur in coal will be;

⇒ 61700 × 1.20% = 740.4 kg

moles of sulfur = (740.4 × 1000 g) / 32 g/mole = 23,137.5 moles

moles of so₂ produced

= same moles of so₃ and same moles of H₂SO₄ = 23,137.5 moles

volume of pond = 397 m x 258 m x 5.64 m = 577,682.64 m³ = 577682640 L

Molarity = moles / volume = 23,137.5 / 577682640 = 4.0052 × 10⁻⁵ M

now each mole of  H₂SO₄ will give 2 moles of H⁺

[H⁺] = 2 × 4.0052 × 10⁻⁵ =  8.0104 × 10⁻⁵ M

pH = -log[H⁺]  

pH = -log [ 8.0104 × 10⁻⁵ M ]

pH = 4.0963

Therefore, the pH of the pond is 4.0963

Answer:

metal

Explanation:

it's a soft silvery metal

Answer:

1. Observing

2. Classifying

3. Predicting

4. Making a hypothesis

5. Experimenting

6. Measuring

7. Communicating

8. Making an inference

9. Constant

10. Interpreting data

Explanation:

Hope this helps!!

hope it is helpful to you

Answer:

= 0.2625M ≅ 0.26M (2 sig figs)

Explanation:

               HOAc                        +                    NaOH                 => NaOAc + H₂O

   25ml (Molarity of HOAc)       =\        37.5ml(0.175M NaOH)

Molarity of HOAc = 37.5ml(0.175M NaOH)/25ml

= 0.2625M ≅ 0.26M (2 sig figs)

Answer:

the attractive forces keep the particles together tightly enough so that the particles do not move past each other.

Explanation:

In the solid the particles vibrate in place.

Answer:

FALSE!

Explanation:

Gymnosperms do use seeds but are exposed like the pine cones of pines. Angiosperms still have seeds, however, they flower or fruit.

Answer:

False

Explanation:

Answer:

174 K

Explanation:

To answer this question we will use the PV=nRT formula, where:

We input the data given by the problem:

And solve for T:

Meaning the correct answer is the fourth option, 174 K.

Answer:

(i) Concentrated HNO3 can be stored and transported in aluminium containers as it reacts with aluminium to form a thin protective oxide layer on the aluminium surface. This oxide layer renders aluminium passive. (ii) Sodium hydroxide and aluminium react to form sodium tetrahydroxoaluminate(III) and hydrogen gas.

Answer:

4770 grams of sodium carbonate

Explanation:

The reaction that takes place between sodium carbonate and sulfuric acid is:

First we calculate how many H₂SO₄ moles reacted, using the given concentration and volume of solution:

moles = Molarity * Liters

Then we convert H₂SO₄ moles into NaCO₂ moles, using the stoichiometric coefficients:  

Finally we convert 45 NaCO₂ moles into grams, using its molar mass:

Answer:

Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.

please give brainliest

The atom is krypton and its symbol is Kr.

the mass number is 41 + 36 = 77

its charge is 0 as it is a noble gas.

Answer:

i think 15

Explanation:

Answer: About Barium Acetate

All metallic acetates are inorganic salts containing a metal cation and the acetate anion, a univalent (-1 charge) polyatomic ion composed of two carbon atoms ionically bound to three hydrogen and two oxygen atoms (Symbol: CH3COO) for a total formula weight of 59.05. Hopefully i helped

Explanation:

Answer:

Container 2 has the lowest average molecular speed

Container 4 has the highest average molecular speed

Explanation:

Step 1: Data given

Atomic mass of Xe = 131.29 g/mol

Container 1: Number of moles Xe = 0.115 moles; volume = 4.87 L; temperature= 446K

Container 2: Number of moles Xe = 0.599 moles; Volume = 5.78 L; temperature= 306K

Container 3: Number of moles Xe = 0.444 moles; Volume = 2.39L; Temperature = 408K

Container 4: Number of moles Xe = 0.556 moles; Volume=2.11L; Temperature =446K

Step 2: Calculate average molecular speed

Average molecular speed V = √(8RT/πM)

→With R = he gas constant expressed in units of J/mol-K

→with T = the temperature in Kelvin

→with M = the molar mass of the gas

Average molecular speed depends on T and M

Since it's all Xenon, M is the samefor the 4 containers

Container 1:

V1 = √(8*8.314*446K/π*131.29)

V1 = 8.48

has an average molecular speed between the highest and the lowest

V2= √(8*8.314*306K/π*131.29)

V2= 7.03

has the lowest average molecular speed

V3 = √(8*8.314*408K/π*131.29)

V3 = 8.11

has an average molecular speed between the highest and the lowest

V4 = √(8*8.314*446K/π*131.29)

V4 = 8.48

Since the volume is smaller than in container 1 the average molecular speed will be a higher

has the highest average molecular speed

Answer:

Is the answer eight atoms

Answer:

The correct option is C. 1 kJ x 1/ΔHfus x g/mol x ml/g liquid

Explanation:

The change in enthalpy of fusion (ΔHfus) has units of energy divided into moles of substance:

ΔHfus = energy/mol of substance = J/mol or KJ/mol

Thus, we multiply the kJ of energy produced by the inverse of ΔHfus (in kJ/mol) we obtain the moles of substance:

energy (kJ) x 1/ΔHfus (mol/kJ) = moles of substance(mol)

Then, if we multiply the moles of substance by the molecular weight of the substance (in g/mol) we obtain the grams:

moles of substance(mol) x molecular weight (g/mol) = grams of substance (g)

Finally, if we multiply the grams of substance (in g) by the density of the substance (in g/ml) we obtain the volume (in ml):

grams of substance (g) x 1/density (ml/g) = volume (ml)

We combine all these parts to obtain the equation for the volume required to produce 1 kJ of energy:

energy (kJ) x 1/ΔHfus (mol/kJ) x molecular weight (g/mol) x 1/density (ml/g)

Therefore, the correct option is:

C → 1 kJ x 1/ΔHfus x g/mol x ml/g liquid

1 kJ x 1/ΔHfus x g/mol x ml/g liquid

Hello,

During telophase, the cell, each pole of which inherits the same number of single  chromosomes, begins to divide into 2: this is  cytodieresis.

Answer: the answer is C

Um pls mark me as brainliest

Explanation:

Answer:

plants and animals

Explanation:

Answer:

water, light, wind, soil, humidity, minerals, gases

Explanation:

i just know

Answer:

The correct answer is - [tex]\frac{P}{4}[/tex].

Explanation:

By the ideal gas equation is PV=nRT, the relation between pressure and volume can be drive if the temperature remains constant:

At constant temperature, for a fixed amount of gas, P∝

so the pressure is inversely proportional to volume. Therefore, if the volume is increased in this condition the pressure will decrease in the same manner and A decrease in the volume will lead to an increase in pressure.

Volume increased here = four times = 4V

pressure is P will decrease four times = P/4

Answer:

You Need To Upload The Photo Then I Will Help You :)

Explanation:

Answer:

Has definite shape and volume

Solids have high melting point

Explanation:

Answer:

[tex]\boxed {\boxed {\sf 155 \ g\ CO}}[/tex]

Explanation:

To convert from moles to mass, the molar mass must be used.

First, write the chemical formula for carbon monoxide. Since the carbon (C) comes first without a prefix, there is 1 carbon atom. The prefix mono- before oxide means 1, so there is also 1 oxygen (O) atom. The formula is CO.

Next, look up their molar masses on the Periodic Table.

Since there is 1 atom of each, the molar masses can be added.

Use this molar mass as a ratio.

[tex]\frac {28.01 \ g \ CO} {1 \ mol \ CO}[/tex]

Multiply by the given number of moles:5.55

[tex]5.55 \ mol \ CO *\frac {28.01 \ g \ CO} {1 \ mol \ CO}[/tex]

The moles of carbon monoxide cancel.

[tex]5.55 * \frac {28.01 \ g \ CO} {1 }[/tex]

Multiply.

[tex]155.4555 \ g \ CO[/tex]

The original measurement of moles has 3 significant figures, so our answer must have the same. For the number we calculated, it is the ones place. The 4 in the tenths place tells us to leave the 5.

[tex]155 \ g\ CO[/tex]

5.55 moles of carbon monoxide is about 155 grams.

C. picking a tray in the cafeteria line

Answer:

true

Explanation:

Carbon dioxide, nitrous oxide, and methane are all compounds that consist of two elements

Answer:

297 J

Explanation:

The key to this problem lies with aluminium's specific heat, which as you know tells you how much heat is needed in order to increase the temperature of 1 g of a given substance by 1∘C.

In your case, aluminium is said to have a specific heat of 0.90Jg∘C.

So, what does that tell you?

In order to increase the temperature of 1 g of aluminium by 1∘C, you need to provide it with 0.90 J of heat.

But remember, this is how much you need to provide for every gram of aluminium in order to increase its temperature by 1∘C. So if you wanted to increase the temperature of 10.0 g of aluminium by 1∘C, you'd have to provide it with

1 gram0.90 J+1 gram0.90 J+ ... +1 gram0.90 J10 times=10×0.90 J

However, you don't want to increase the temperature of the sample by 1∘C, you want to increase it by

ΔT=55∘C−22∘C=33∘C

This means that you're going to have to use that much heat for every degree Celsius you want the temperature to change. You can thus say that

1∘C10×0.90 J+1∘C10×0.90 J+ ... +