What is the molecular formula for a compound with an empirical formula of C₅H₄ and a molar mass of 128.16g?

Answer:

B. 0.35mol KClO3

Explanation:

The balanced equation in this question is given as follows:

2KClO3 → 2KCl + 3O2

Based on the chemical reaction;

2 moles of KClO3 decomposes into 3 moles of O2

If 0.525 moles of O2 are produced, then:

= 0.525 × 2/3

= 1.05/3

= 0.35mol of KClO3 is decomposed.

Answer:

February 12th.

Explanation:

Trust me.

Answer:

Number of Protons, 28. Number of Neutrons, 31. Number of Electrons, 28

Explanation:

N/A

answer: nickel element has 30 neutrons

Answer:

Fission

Explanation:

Answer:(4) pH 3 to 1

Explanation:

im 95% sure its the right answer

Answer:

4383.28 g

Explanation:

First we'll need to convert molecules into moles, we can do so using Avogadro's number:

Then we will convert 99.62 moles of carbon dioxide (CO₂) into grams, using its molar mass:

Answer:

2Na+Cl2 -> 2NaCl

Explanation:

1Na+1Cl 2 -> 1NaCl (i'm assuming they want you to balance it so ill start with 1)

Na = 1

Cl = 2 (it is 2 because it is Cl2, meaning that there are 2; but remember that you cannot change this number only coefficients)

Na = 1

Cl = 1

We need to have 2 Cl on the product side

1Na+1Cl 2 -> 2NaCl

Now we need 2 Na on the reactants side

The final equation is

2Na+Cl2 -> 2NaCl

Now it is balanced

Na = 2

Cl = 2

--

Na = 2

Cl = 2

Answer:

B: 2 mol NaOH/2 mol H2O

Explanation:

The reaction equation is;

H2SO4 + 2NaOH = Na2SO4 + 2H20

Now, to know how many moles of NaOH will be produced for 10.5 grams of water (H2O) used, and since the molar mass of H2O is 18.02 g/mol and number of moles attached to H2O and NaOH in the reaction are both 2 we will have;

10.5g H2O × 1 mol H2O/18.02 g H2O × 2 mol NaOH/2 mol H2O

Thus correct answer is option B

Answer:

A person can identify their blood type at home using a rapid blood typing kit. Using the kit requires a person to pierce a finger with a needle. The kit comes with a card that contains chemicals known as reagents. These test for the presence of the antibodies and Rh factor.

Explanation:

Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.

Answer:

Explanation:

Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings, such as the arthropod exoskeleton, have different developmental origin, structure and chemical composition.

Answer:

responds to a stimuli or made of cells with membrane

Explanation

Answer:

i can't read it.. maybe upload a visible picture?

Answer:

biotic

Explanation:

Answer:

0.20 times 10(-5)

Explanation:

Answer:

Explanation:the best guess I will go with is H but I might be wrong

Answer:

if you are a teen then its pretty normal as during the age of adolescent sweat gland become active and pimples take place on you face , no need to worry at this your face will become beautiful again .

but if you are above 25 then it is a time to worry , you should consult a doctor or you can use alovera jel or any other home remedies. :)

Answer:

kinetic energy

Explanation:

force is used

Answer:

yes true

Explanation:

based off my common sense as if you were to rub your hands together to warm up, it creates friction creating heat

Answer: Synthesis (of phosphorous and oxygen to form tetraphosphorous decaoxide)

Explanation:

Answer: [tex]K_p=\frac{1}{[p_{Cl_2}]^6}[/tex]

Explanation:

Equilibrium constant is defined as the ratio of pressure of products to the pressuure of reactants each raised to the power their stoichiometric ratios. It is expressed as [tex]K_p[/tex]  

For the given chemical reaction:

[tex]P_4(s)+6Cl_2(g)\rightarrow 4PCl_3(l)[/tex]

The expression for [tex]K_p[/tex] in terms of gaseous is written as:

[tex]K_p=\frac{1}{[p_{Cl_2}]^6}[/tex]

Answer:

D

Explanation:

It increases fast.

Answer:

Point of incidence: The point on the surface where the incident ray strikes the surface is called the point of incidence. Reflected ray: The ray of light that bounces back from the surface of an object is called a reflected ray of light.

Explanation:

Search

Answer:

Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models. The models use equations, along with new and past weather data, to provide forecast guidance to our meteorologists

Answer:

C. Copper used for making electrical wires

Explanation:

When a coating of a particular metal is applied on another metal, the process is termed as electroplating. The process is carried by the process of electro-deposition. This process is carried on in order to enhance the quality of the objects manufactured. The coating helps in resistance and provides an attractive appearance to the object.  

Option C. is not an example of electrocoating because on the copper wires no other metal coating is done. In all the other three options, coating has been done on the object.

Answer: Humans use energy to carry out their daily activities, like moving around, working, running etc.

Explanation:

Answer:

grasslands ia the answer!