I dont understand and know the anwser to this

Answer:

In the forward direction and releases carbondioxide gas from backside.

Explanation:

In the forward direction and the carbondioxide gas which is a waste material is removed from the engine at the back. The chemical energy of fuel is converted into mechanical energy with the help of engine which able the car to move in the forward direction so engine is the key component that is responsible for the movement of car.

Answer:

In the forward direction and releases carbondioxide gas from backside.

Explanation:

Answer:

B

Explanation:

when present

double bond the copound is alkene

Answer:

1 gravity 2 counteractive

Explanation:

Answer:

The first option

Explanation:

No new compounds were added, and the pre existing ones wern't changed, so option one is the only one that makes sense.

Good luck!

Answer:

It shows how sunlight triggers transpiration in the plant.

Explanation:

The water eventually is released to the atmosphere as vapor via the plant's stomata — tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves are known as transpiration.

Answer:

They are different ions of the same element.

Explanation:

on Quizlet

Answer:

P(N₂) = 4.02 atm

Explanation:

Number of moles of O₂ = 4 mol

Number of moles of N₂ = 8 mol

Total pressure = 6 atm

Partial pressure of N₂ = ?

Solution:

We will calculate the partial pressure by using mole friction.

P(N₂) = X(N₂)P(total)

X(N₂) = mol friction = moles of N₂ / total number of moles

X(N₂) = 8 mol / 12 mol = 0.67

Partial pressure of N₂:

P(N₂) = X(N₂)P(total)

P(N₂) = 0.67 × 6 atm

P(N₂) = 4.02 atm

Answer:

Reactivity

Explanation:

Answer:

Reactivity

Hope This Helps!!!

I wrote it out as it was easier to visualise that way, youll need to tap to see the full pic. feel free to comment if u have qns :)

Answer:

Your answer is Plasma which is D.

Explanation:

This is because lighting can be structed in the sky near stars or sun.

Answer:

Atomic weight of(N) nitrogen is 14.0067

(Al)Aluminium is 26.98154

(Ca) calcium is 40.48

Explanation:

I hope it's helpful!

Ocean waves aren't technically related to this. Sound waves are shorter than

light waves, depending on the type of light wave.

Answer:

Compost is a mixture of organic residues (manure, animal carcasses, straw, etc.) that have been piled, mixed and moistened to undergo thermophilic (high heat 113 to 160 degrees Fahrenheit) decomposition (SSSA, 1997).

Explanation:

Answer:

1.88 x 10²³molecules of H₂O

Explanation:

Given parameters:

Mass of H₂O  = 5.609g

Unknown:

Number of molecules of  H₂O  = ?

Solution:

To solve this problem, we need to find the number of moles of given compound first.

 Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of  H₂O = 2(1) + 16  = 18g/mol

 Number of moles  = [tex]\frac{5.609}{18}[/tex]   = 0.31mole

From mole concept;

            1 mole of a substance contains 6.02 x 10²³molecules

       0.31 mole of H₂O will therefore contain 0.31 x 6.02 x 10²³molecules

                                             = 1.88 x 10²³molecules of H₂O

Answer:

Please find how these data prove the law of multiple proportions below

Explanation:

The law of multiple proportions was proposed by an English chemist called John Dalton. The law states that when two elements combine and to form more than one compound. The weights/masses of the second element in the two compounds, which combines with a fixed ratio of the first element, is in a simple whole number ratio.

In this question, Nitrogen is said to combine with oxygen to give three different compounds as follows:

A) laughing gas containing 63.65% nitrogen i.e. 0.6365g

This means that the mass of oxygen will be (1-0.6365) = 0.3635g

B) colorless gas containing 46.68% nitrogen i.e. 0.4668g

This means that the mass of oxygen will be 0.5332g

C) brown toxic gas containing 30.45% nitrogen i.e. 0.3045g

This means that the mass of oxygen will be 0.6955g

The ratios of oxygen in the three compounds is therefore:

0.3635: 0.5332: 0.6955

Divide this ratio by the smallest number (0.3635)

0.3635/0.3635 = 1

0.5332/0.3635 = 1.467

0.6955/0.3635 = 1.913

Multiply this ratio by 2, we have:

2: 2.9 : 3.8

Hence, the simple whole number ratio is 2:3:4.

This proves the law of multiple proportions that oxygen is in simple whole number ratio in the three different compounds.

Answer:

sour!

Explanation:

Answer

We kill animals and we are creul :)

Explanation:

Your welcome

Answer:

its atomic weight

Explanation:

Answer:

You're answer is B.

Explanation:

I'm extremely sorry if that's wrong.

Answer:

18 electrons

Explanation:

The third principal energy level has one s orbital, three p orbitals, and five d orbitals, which can each hold up to 10 electrons. This allows for a maximum of 18 electrons. The fourth and higher levels have an f sublevel in addition to the s, p, and d orbitals.

Answer:

18 electrons

Explanation:

The five d orbitals can hold up to 10 electrons. Thus, the third level holds a maximum of 18 electrons: 2 in the s orbital, 6 in the three p orbitals, and 10 in the five d orbitals.

Answer:

it's-D...........................

The most reactive non metal is called Astantine(As)

Answer:

34 atoms

Explanation:

Answer:

False

Explanation:

On the left side of the equation (Li + O2), there is 1 Li atom and 2 O atoms.

but on thw right side of the equation (Li2O,) there is 2 Li atoms and 1 O atom