FREE POINTS

HURRY PLEASE! help me - you do not have to explain your answer If you dont want to, I just want the 2 answers to these two multiple choice problems because I am struggling!

Answer:

what is your question?

Explanation:

I don't understand

Answer:

blood?

Explanation:

because you need it and makes your body works

Answer:

C

Explanation:

Carbon forms triple bonds will form triple bonds with other carbon and forms ethyne. The triple bonded hydrocarbons are commonly called as alkynes. Hence, option C ethyne is correct.

Carbon forms bond with other carbons and exhibit the property of catenation to form long chains. The backbone of hydrocarbons are the carbon - carbon bonds.

There are three types of hydrocarbons namely, alkanes, alkenes and alkynes. Alkanes are saturated hydrocarbon having single bond between carbon atoms. Eg. methane , ethane etc all having suffix of 'ane'. Alkenes are unsaturated hydrocarbons with double bond between two or more carbon atoms.

Alkenes are named with the suffix 'ene'. Hence, the names become ethene, propene etc. When triple bonds forms between carbon atoms they are called alkynes and are unsaturated. Alkynes are named with the suffix 'yne' like ethyne, propyne etc.. Hence, two carbon with triple bond between them is ethyne.

To find  more on alkynes, refer here:

https://brainly.com/question/23508203

#SPJ6

Answer:

body temperature and energy

Answer:

“Newton’s Law of Gravity” gives the gravity force between two objects with masses m

and M separated by distance r:



F  G

m M

r

2

G is called the Gravitational Constant, and has the value



6.671011N m

2

kg2

(N is for

Newton, the physicists’ unit of force) or



1.51011 lbm

2

kg2

.

Let’s go back to the example given in the text: two 150 lb people separated by 1 meter.

The mass of each person is



150lb

2.2

lb

kg

 68kg

. Putting these into the formula gives



F 1.5101 1 lb m

2

kg2



(68kg)

2

(1m)

2

107

lb.

Newton’s Law of Gravity actually gives the force only between two small objects. If one

of the objects is a sphere (such as the Earth) then it turns out that you can still use the

formula, but you must use the distance to the center of the sphere as the value for r. As

an example, let’s put in numbers for a 1 kg object sitting on the surface of the Earth.

Then the force of attraction is given by the gravity equation with m = 1 kg, M = the mass

of the Earth =

24 610

kg, and r = radius of the Earth (that’s the distance to the center of

the sphere). This distance is r = 6371 km ≈

6

610

meters. Without plugging in the

numbers, can you guess what the answer will turn out to be? Guess, and then check this

footnote2

to see if you guessed correctly.

Suppose you weigh 150 lbs on the Earth. Then your mass is



150lb

2.2

lb

kg

 68kg

. What will

you weigh on the Moon? We can calculate that by using Newton’s Law of Gravity, and

putting in the M = the mass of the Moon =

22 7.310

kg, r = the radius of the moon =

6

1.710

meters. The answer is F = 25 lb. That means you will weigh 25 lb. on the

surface of the Moon.

Explanation:

hope this helps :)

Answer:

Explanation: in same temperature amounts of moles are proportional

To volumes of gases. When one mole Oxygen reacts with Sulphur,

One mole Sulphur dioxide is formed. Thus 3,5 litres O2 is needed to produce same volume SO2

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: 1513.15789 Pennies

Explanation:

2300 / 1.52 = 1513.15789

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer:

Nitrites can be reduced to form nitrogen. Almost all nitrate salts are soluble in water. Almost nitrate are soluble in water and slightly soluble in primary alcohols. The oxidation number of nitrogen in the nitrates is +5. The oxidation number of nitrogen in nitrates is +3.

Explanation:

Ammonium nitrate readily dissolves in water by dissociating into its respective ions. This salt is acidic in nature. Ammonium nitrate is an important fertilizer required for the growth of plants.

The nitrogen is the most usually used limiting supplement in the development of crops. Nitrogen is essential for the vegetative development and it is involved in creating food through photosynthesis. The use of ammonium nitrate is the best way to provide nitrogen for the plants.

It is very essential to convert nitrogen into nitrate, in order to be used by the plants. The ammonium nitrate and nitrite are highly stable than urea and does not rapidly lose nitrogen to the atmosphere. So both the nitrites and nitrates of ammonium are soluble in water and plants can easily absorb them.

So ammonium nitrate has high nutrient content.

To know more about importance of ammonium nitrate, visit;

https://brainly.com/question/28335177?referrer=searchResults

#SPJ3

Answer:

[H⁺] = 5.754 x 10^-13 M

Explanation:

Since pH is the negative log of the hydronium concentration, we can solve for hydronium concentration and then plug in our given pH:

pH = -log[H⁺]

-pH = log[H⁺]

10^-pH = [H⁺]

Let's plug in our pH:

[H⁺] = 10^-pH = 10^-12.24 = 5.754 x 10^-13 M

Answer:

the answer is b beacuse the substance changed

Answer:

La respuesta está en el enunciado

Explanation:

Una solución química es definida como una mezcla de dos o más sustancias donde, la que está en mayor proporción, es definida como el solvente y los componentes que están en menor cantidad se definen como los solutos.

En general, en la formulación de bebidas, el solvente es agua, los solutos son otros componentes como saborizantes y colorantes que permiten que el consumidor tenga experiencias agradables con la bebida.

Además, la solución debe ser homogenea, esto es, todos los solutos se encuentran completamente disueltos en el solvente. Una bebida comercial a la que se le encuentren partículas no genera confianza y puede ser rechazada por parte del consumidos.

Answer:

D

Explanation:

Answer: It’s the 3rd one

The elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.

The elements of period 5 include metals and nonmetals,

For example-

Therefore, the elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.

To know more periodic table,

https://brainly.com/question/11155928

Answer:

Meteoroids are tiny asteroids or the broken-off crumbs of comets and sometimes planets. They range in size from a grain of sand to boulders 3 feet (1 meter) wide. When meteoroids collide with a planet's atmosphere, they become meteors

pls give me brainliest lol :)

Answer:

d.) gases can be expanded without limit.

Answer:

the amswer to number 5 is 18g/ mol and the answer to number 6 is 8

Answer:

Malleability : Capable of being shaped or bent.

Ductility : Easily pulled or stretched into a thin wire.

Luster : Has a shine or glow.

Conductivity : Good transmission of heat or electricity.

Softness : Soft enough to be cut with a knife.

Answer:

The answer is J (9.46 L)

Answer:

The second stage of cellular respiration is the “Krebs Cycle”. This is a catabolic reaction that occurs within the cells. In cells, the energy is produced and stored in the form of ATP.

Answer:

the water is first screened then filtered to remove undesolvable objects then passed into the sedimentation tank which is again filtered after leaving the tank. Chlorine is then added to the fine filtered water to kill viruses and bacteria. now the water is clean hope i ave help u enough

Explanation:

Answer:

nutrients

Explanation:

nutrients are materials the body needs to build itself and stay in top working order

Answer:

What's In Food?

As far as the body is concerned, food is made of various nutrients, and a large number of substances that have no nutrient value. Nutrients are the materials the body needs to build and stay in top working order

Answer:

the phenotype of the offspring will be pink

Answer:

it is true

Explanation:

hope it helps :)

Answer: I think it is true

Explanation:

it is true because it will start rusting when there is a scratch on the paint!

I HOPE THIS HELPS YOU!!

Answer:

92.37°C

Explanation:

Assuming the volume remains the same in both the states ( bicycle tire).

Then as per ideal gas equation

[tex]P_1/T_1 = P_2/T_2[/tex]

where P1, P2 are pressure at two different states and T1, T2 are temperature at these two states

Given:

P1 = 1.34 atm, T1 = 33.0 ° C = 306K

P2 = 1.60 atm, T2 = ?

1.34/306 = 1.60/T_2

⇒ T2 = 1.60×306/1.34

= T2= 365.37K= 92.37°C

Answer:

a.) exothermic

b.) 2,800.6 J

Explanation:

Answer:

Kinetic Energy

Explanation:

When we run we are using chemical energy in our bodies to produce movement ( kinetic energy ) .

Answer:

96g of CO₂ would be produced

Explanation:

Based on the reaction:

CH₄ + 2O₂ → CO₂ + 2H₂O

1 moles of methane, CH₄ produces 1 mole of carbon dioxide, CO₂.

To solve this question we must find the moles of methane added in the reaction. These moles added are equal to moles of CO₂ produced. With the molar mass of CO₂ (44.01g/mol) we can find the grams that would be produced:

Moles CH₄ -Molar mass: 16.04g/mol-:

35g * (1mol / 16.04g) = 2.182 moles of CH₄ are added = Moles CO₂ produced.

Mass CO₂ produced.

2.182 moles CO₂ * (44.01g / mol) =

Answer:

see explanation

Explanation:

The molecular equation => F₂(g)  +  SrCl₂(aq) => SrF₂  + Cl₂(g)

Ionic Equation:  shows all species involved in the reaction. For the ionic reaction given the ionic equation should show all substances in reaction in ionic form along with the molecular formulas of non-ionic compounds. In general, salts that contain a metal and nonmetal that undergo ionization when dissolved in water.  

The ionic equation => Show ionic compounds in ionized form with oxidation states. Do not ionize weak acids weak bases ( molecular compounds.

=>  F₂(g) + Sr⁺² + 2Cl₋ => Sr⁺²(aq) + 2F⁻ +  Cl₂(g)

The net ionic equation =>  shows only species directly involved in the chemical process. If in the net ionic equation that are equivalent on both sides of the working equation, one should remove those compounds from the ionic equation showing only the species involved in the chemical reaction process.  

=>  F₂(g) + Sr⁺²(aq) + 2Cl⁻(aq) => Sr⁺²(aq) + 2F⁻(aq) +  Cl₂(g)

Note that Sr⁺²(aq) is found on the reactant and product sides of the equation. Cancelling Sr⁺² gives the net ionic equation.

=>   F₂(g) + 2Cl₋(aq) =>  2F⁻(aq) +  Cl₂(g)

Answer:

dissolve

Explanation:

salt will dissolve in water while sand will not, so you arent going to see salt pass through

Answer:

b

Explanation: