What must happen to a solid material before a person is able to smell it?
1

Answer:

Animalia

Explanation:

Answer:

Explanation:

NaOH   +   HCl   =   NaCl   +   H₂O

1 mole      1 mole

moles of hydrogen chloride reacted = .0206 x .209  

= 4.3054 x 10⁻³ moles .

moles of sodium hydroxide reacted will be same = 4.3054 x 10⁻³ moles

Let x  be the molarity of NaOH

13.9 mL of x molarity will contain

.0139 x moles

.0139 x = 4.3054 x 10⁻³

13.9 x 10⁻³ x =  4.3054 x 10⁻³

x = .3097 M .

= .31 M .

Answer:

BECAUSE APPEARS TO REMAIN IN A FIXED LOCATION DUE NORTH WHILE ALL THE OTHER STARS APPEAR TO MOVE AROUND IT.

Explanation:

I'M NOT SURE.CORRECT ME IF WRONG

Convert 10g of NaOH to moles using the molar mass.

10 g NaOH / 39.997 g/mol NaOH = 0.25 mol NaOH

NaOH is a strong base so it dissolves completely in solution, so you’ll have 0.25 mol of OH-. Calculate the molarity of OH-.

0.25 mol OH / 0.250 L = 1.0 M OH-

Calculate the pOH. pOH = -log(1.0) = 0

pH = 14 - pOH = 14

Answer:

2

5

4

1

3

Explanation:

got it right on edge :))))

Answer:

Insert numbers next to these steps to show the correct order of events for a fuel cell to work. (1 - first step, 5 – last step).

2

At the anode, the H2 loses electrons and becomes H+.

5

At the cathode, H+ ions combine with electrons and O2 to produce H2O.

4

Electrons (e–) flow through the wire to produce electricity.

1

Fuel (H2) is pumped into the cell.

3

H+ flows through the electrolyte to the cathode.

Answer:

it's definitely a oxidation reaction because here the oxygen contained OH group present in yeild

Answer:

D is the most soluble in water at 60 degrees Celsius

According to the data given in the table, the salt is most soluble at 60o C - salt D.

In the given table it is given that all the salts are soluble in different concentrations in different concentrations of the water at the same temperature of 60 degrees celsius.

Converting them in the same amount of H₂O that is 100 grams in the same ratio:

Thus, the salt D is the most soluble that is 50 grams per 100 gram H₂O.

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Answer:

2.67 * 10-3 mol/L

Explanation:

Henry's law is a gas law that states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid. The proportionality factor is called Henry's law constant. (Wikipedia)

Given that; C =kP

C= concentration of a dissolved gas = ?

k = Henry's Law constant = 9.71 x 10-4 mol/(L·atm)

P = partial pressure of the gas = 2.75 atm

So,

C = 9.71 x 10-4 mol/(L·atm) * 2.75 atm

C = 2.67 * 10-3 mol/L

Answer:

compound

Explanation:

Answer: 1.) A. Nebula

2.) I think it's K. Planetary Nebula

3.) E. Red Supergiant

4.) C. Main Sequence

5.) F. Supernova

6.) I. White dwarf

7.) B. Protostar

8.) G. Black Hole

9) J. Black dwarf

10.) H. Neutron Star

11.) D. Red Giant

Answer: Plants and animals share many characteristics, but they are different in some respects hope that helps-

Explanation:

Answer: it is Sulphur, S

Explanation:

Answer:

1.09 moles

Explanation:

Sodium has a molar mass of 23 grams per mole. To get the number of moles of sodium, divide 25 grams by 23 grams per mole. The answer is 1.09 moles

Answer: The ratio of carbon dioxide molecules to oxygen molecules is 20 :31

Explanation:

Combustion is a chemical reaction in which hydrocarbons are burnt in the presence of oxygen to give carbon dioxide and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced combustion reaction is,:

[tex]2C_{10}H_{22}(l)+31O_2(g)\rightarrow 20CO_2(g)+22H_2O(g)[/tex]

Thus the ratio of carbon dioxide molecules to oxygen molecules is 20 : 31

Answer:

0.087 g/cm^3

Explanation:

Density is Mass : Volume.

Volume = 12 x 8 x 9 = 864 cm^3

Mass = 75 g

Density = 75g/864 cm^3 = 0.087 g/cm^3

The density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm is 8.6 x 10⁻⁵ Kg/cm³.

Density is defined as the mass per unit volume of the body. Mathematically-

ρ = M/V

Given is a 75 g block of wood measuring 12 cm x 8 cm x 9 cm.

We can write -

Mass = [m] = 75 g = 75/1000 = 0.075 Kg

Volume = [V] = L x B x H = 12 x 8 x 9 = 864 cm³

Therefore, the density of the object will be -

ρ = M/V

ρ = 0.075/864

ρ = 8.6 x 10⁻⁵ Kg/cm³

Therefore, the density of a 75 g block of wood measuring 12 cm x 8 cm x 9 cm is 8.6 x 10⁻⁵ Kg/cm³.

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The person who looks at the different area managers in a large corporation such as in HR, Business Information and Operations is known as a general manager.

An organizational structure can be described as the process which involves dividing an organization into several functional units. A functional organizational structure is a kind of structure used to organize staff by categorizing them into several departments based on their roles or functions, skill sets, and knowledge.

These departments are vertically structured and may include IT, sales, finance and marketing, research, customer service, etc. The various departments are headed by functional managers who have the responsibility of managing, overseeing, and reporting to the executive management.

A manager is an individual who has the responsibility of providing guidance,  supervision, support, and administrative control, as well as acting as a role model to the employees working in an organization.

Generally, managers are involved in taking up leadership roles and are expected to build strong relationships with their subordinates by providing a fair ground for effective communication and sharing of resources.

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Answer:

Convention currents are found in the asthenosphere part present in the mantle of the Earth.

Explanation:

The Mantle is the middle layer of the earth surface extending up to 2900 kilometers.

Beneath the Mantle lies the core which contains molten rocks and materials called magma.

The materials are highly radioactive and immensely heated. These highly hot condition creates pressure on the middle layer (Mantle).

As a result, large convention currents are generated excessively

Answer:

15 grams should be the answer

Answer:

Hotspots occur when one of the Earth's plates moves over an unusually hot part of the Earth's mantle. These hot areas are usually relatively stationary and result in large amounts of magma rising up, piercing a hole in the plate to form a volcano. As the plates move, a series of volcanoes can form.