Which TWO statements describe the ocean floor giving brainliest plz help and explain

Answer:

neon is about five times more massive than helium.

Explanation:

got this one right lol

Answer: 8.89M

Explanation:

Answer:

λ = 1.1×10⁸ m

Explanation:

Given data:

Frequency of wave = 2.7 Hz

Wavelength of wave = ?

Solution:

Formula:

Speed of wave = frequency × wavelength

Speed of wave = 3×10⁸ m/s

now we will put the values in formula.

3×10⁸ m/s = 2.7 s⁻¹ × λ

λ = 3×10⁸ m/s /2.7 s⁻¹

λ = 1.1×10⁸ m

Answer:

vinegar or stomach acid im not quite sure

Explanation:

The question is incomplete, the complete question is;

Suppose 0.981 g of iron (II) iodide is dissolved in 150. mL of a 35.0 m M aqueous solution of silver nitrate. Calculate the final molarity of iodide anion in the solution, You can assume the volume of the solution doesn't change shen th s sove m Be sure your answer has the correct number of significant digits

Answer:

0.014 M

Explanation:

We have to first obtain the number of moles of FeI2

Molar mass of FeI2= 310 g/mol

So n = 0.981/310 = 0.0031 mol

Volume of solution = 150mL or 0.15L

Concentration of AgNO3 = 35mM * 10^-3 = 0.035M

number of moles of AgNO3 =  0.035 x 0.15 = 0.00525 mol

es

Equation of the reaction;

2AgNO3 + FeI2 -------> 2AgI + Fe(NO3

)2

Amount of excess FeI2 = 0.00525 - 0.0031 = 0.00215mol

Concentration of excess iodide in solution = Concentration of excess FeI2/volume of solution = 0.00215/0.15 =  0.0143M

Answer:

0.389 M

Explanation:

Using the formula; CaVa = CbVb

Where;

Ca = concentration of acid

Cb = concentration of base

Va = volume of acid

Vb = volume of base

Based on the provided information in the question, Va = 30mL, Ca=?, Vb = 27.83mL, Cb = 0.4190 M

Hence, CaVa = CbVb

Ca = CbVb/Va

Ca = 0.4190 × 27.83 ÷ 30

Ca = 11.6607 ÷ 30

Ca = 0.3886

Ca = 0.389 M

Therefore, the concentration of acetic acid in the vinegar is 0.389 M

Answer:

How many electrons does each gold atom gain?

  Answer:3

How many electrons does each iodine atom lose?

   Answer:1

What is the total number of electrons that are moved in the oxidation-reduction reaction?

   Answer:6

Complete the final balanced equation based on the half-reactions.

2Au(OH)3+6 HI 2 Au +1 3I2 +6 H2O

For the reaction 2 Au(OH)₃ + 6 HI ⇒ 2 Au + 3 I₂ + 6 H₂O,

Each gold atom gains 3 electrons, each iodine atom loses 1 electron. The total number of electrons that are moved in the oxidation-reduction reaction is 6.

Let's consider the following unbalanced redox reaction.

Au(OH)₃ + HI ⇒ Au + I₂ + H₂O

The reduction half-reaction is:

Au⁺³ + 3 e⁻ ⇒ Au

As we can see each gold atom gains 3 electrons.

The oxidation half-reaction is:

2 I⁻ ⇒ I₂ + 2 e⁻

As we can see each iodine atom loses 1 electron.

We can balance the equation by multiplying the reduction by 2, the oxidation by 3, and adding them. The total number of electrons exchanged is 6.

2 (Au⁺³ + 3 e⁻ ⇒ Au)

3 (2 I⁻ ⇒ I₂ + 2 e⁻)

-----------------------------------------

2 Au⁺³ + 6 I⁻ ⇒ 2 Au + 3 I₂

The balanced redox reaction is:

2 Au(OH)₃ + 6 HI ⇒ 2 Au + 3 I₂ + 6 H₂O

For the reaction 2 Au(OH)₃ + 6 HI ⇒ 2 Au + 3 I₂ + 6 H₂O,

Each gold atom gains 3 electrons, each iodine atom loses 2 electrons. The total number of electrons that are moved in the oxidation-reduction reaction is 6.

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The number of molecules in 2.5 moles of sucrose is 1.5055 x 10²⁴.

Molecules are the smallest particle of a substance that retains the chemical and physical properties of that substance. They are made up of two or more atoms that are chemically bonded together.

It is required to use Avogadro's number, which is 6.022 x 10²³ molecules per mole.

Given information,

Moles = 2.5

Now,

The formula for sucrose is C₁₂H₂₂O₁₁, which means that each molecule contains 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms.

The equation to determine the number of molecules is:

Number of molecules = moles x Avogadro's number

Number of molecules = 2.5 mol x 6.022 x 10²³ molecules/mol

Number of molecules = 1.5055 x 10²⁴ molecules

Therefore, there are approximately 1.5055 x 10²⁴ molecules in 2.5 moles of sucrose.

Learn more about molecules, here:

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Answer:

i am pretty sure it is

Development

Mining

Land reclamation

Explanation:

Answer:

its development, mining, and agriculture I just took the assignment and got it right.

Explanation:

Answer:

B

Explanation:

Particles in a solid have fixed locations in a volume that does not change. Solids have a definite volume and shape because particles in a solid vibrate around fixed locations.

Answer:

what is the question then we can help you out

Answer:

51.84

Explanation:

Answer:

What are the following substances?

Explanation:

Answer:

since,hydrogen bonding requires a strongly electronegative atom bonded to a hydrogen atom,only HF willexhibit hydrogen bonding,as afluorine is sufficiently partially positive hydrogen that can form bondwith a lone pair an oxygen in water .

Hope this help u

Answer:

B

Explanation:

In order for any conduction to take place it needs to go through a solid. Therefore it cannot travel through empty space

Answer:

b

Explanation:

Answer:

It travel's about 4,000 km through the Earth in 13 minutes.

Answer:

4,000 km is the correct answer!!!

Answer:

Atomic number is protons

Explanation:

Protons = positive charge

Answer:

b. 1.5 atm.

Explanation:

Hello!

In this case, since the undergoing chemical reaction suggests that two moles of A react with one moles of B to produce two moles of C, for the final pressure we can write:

[tex]P=P_A+P_B+P_C[/tex]

Now, if we introduce the stoichiometry, and the change in the pressure [tex]x[/tex] we can write:

[tex]P=1.0-2x+1.0-x+2x[/tex]

Nevertheless, since the reaction goes to completion, all A is consumed and there is a leftover of B, and that consumed A is:

[tex]x=\frac{1.0atm}{2}=0.5atm[/tex]

Thus, the final pressure is:

[tex]P=1.0-2(0.5)+1.0-(0.5)+2(0.5)\\\\P=1.5atm[/tex]

Therefore the answer is b. 1.5 atm.

Best regards!

Answer:

It is rich in organisms because sunlight passes through its shallow water enabling photosynthesis to occur.

Explanation:

I hope that helped!!

Answer

The answer is: a hidden element, such as a valuable collectible item, or novelty item

Explanation:

Answer:

T

Explanation:

Bacteria are prokaryotic cells. They do not have a nuclear membrane and chloroplast is also absent. In photosynthetic bacteria, there are lamellae called thylakoids which contain enzymes and bacterial chlorophyll necessary for photosynthesis.

Answer:

3.16g of the ester are produced

Explanation:

First, we need to determine the limiting reactant of the reaction converting each reactant to moles:

Moles CH3COOH (Molar mass: 60g/mol):

3.58g *  (1mol / 60g) = 0.05967moles

Moles C5H11OH (Molar mass: 88.15g/mol):

4.75g * (1mol / 88.15g) = 0.05389 moles

As the reaction is 1:1, limiting reactant is C5H11OH.

Theoretical moles of the ester CH3COOC5H11 is 0.05389 moles.

As only the 45.00% is produced:

0.05389 moles * 45.00% =

0.02425 moles of CH3COOC5H11 are produced.

In mass (Molar mass CH3COOC5H11: 130.1849g/mol):

0.02425 moles * (130.1849g / mol) =

Answer:

* No precipitate: [tex]LiOH(aq)+NaCl(aq)\rightarrow LiCl(aq)+NaOH(aq)[/tex]

* Precipitate: [tex]3BaCl_2(aq) +2Na_3PO_4(aq) \rightarrow Ba_3(PO_4)_2(s)+6NaCl(aq)[/tex]

* Precipitate: [tex]MgSO_4(aq)+2KOH(aq)\rightarrow Mg(OH)_2(s)+K_2SO_4(aq)[/tex]

Explanation:

Hello!

In this case, since these all are double displacement reactions, in which the cations and anions are exchanged, we can write the resulting chemical reactions as follows:

a. LiOH and NaCl: No precipitate is formed since LiOH and NaOH are both largely soluble in water:

[tex]LiOH(aq)+NaCl(aq)\rightarrow LiCl(aq)+NaOH(aq)[/tex]

b. BaCl2 and Na3PO4: barium phosphate precipitate is formed because it has a large molar mass which makes it insoluble in water:

[tex]3BaCl_2(aq) +2Na_3PO_4(aq) \rightarrow Ba_3(PO_4)_2(s)+6NaCl(aq)[/tex]

c. MgSO4 and KOH: magnesium hydroxide "milky" precipitate is formed because it is not soluble in water:

[tex]MgSO_4(aq)+2KOH(aq)\rightarrow Mg(OH)_2(s)+K_2SO_4(aq)[/tex]

Moreover, we can relate the solubility of a substance by considering its polarity, molar mass and nature; usually, heavy substances tend to be insoluble in water as well as nonpolar compounds.

Best regards!

The combinations which will make precipiate after mixing are BaCl₂ & Na₃PO₄ and MgSO₄ & KOH.

Precipitate is a solid substance, which is insoluble in water or in any given solutions and settle down at the bottom of the vessel.

Precipitate will form when substance have higher size of ions which are not attracted by the water ions because of smaller size of water ions.

        BaCl₂(aq) + Na₃PO₄(aq) → Ba₃(PO₄)₂(s) + 6NaCl(aq)

       MgSO₄(aq) + 2KOH(aq) → Mg(OH)₂(s) + K₂SO₄

Because of the higher size of ions of Ba₃(PO₄)₂ & Mg(OH)₂ they are insoluble in water.

Hence combination of BaCl₂ & Na₃PO₄ and MgSO₄ & KOH will make precipitate.

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Answer: its 4xb236.52

Explanation:

Answer:

90

Explanation:

Let ʸₓA be the resulting element when ²³⁴₉₂U under goes alpha decay.

Thus, the equation is given below

²³⁴₉₂U —> ʸₓA + ⁴₂He

The atomic number x of the resulting element can be obtained as follow:

92 = x + 2

Collect like terms

92 – 2 = x

90 = x

Therefore,

x = 90

Thus, the atomic number of resulting element is 90.

Answer:

Explanation:

The nucleophilic addition reaction of alcohol to a carbonyl compound in an acidic medium forms a hemiketal in the case of a ketone or a hemiacetal in the case of an aldehyde. When the carbonyl function is brought into contact with two alcohol functions, a ketal (for a ketone) or an acetal (for an aldehyde) is obtained.

From the image attached below, we will see how ketal formation occurs by the reaction of two molecules of ethanol with one cyclohexanone molecule.

Answer:

This question appears incomplete

Explanation:

This question appears incomplete because of the absence of options. However, when a solid substance conducts electricity when dissolved in water (or in it's aqueous form) and has a high melting and boiling point, that substance is likely to be an electrovalent or ionic compound. This is because, ionic compounds are crystalline solids at room temperature with the properties above. Examples of ionic compounds are sodium chloride (NaCl) and potassium iodide (KI). The type of bond present in these compounds is what is referred to as the electrovalent/ionic bond.

Answer:

C7H9 + 3HNO3 → C7H6(NO2)3 + 3H2O

Explanation: