if I can, I'll give branliest
How many valence electrons does this atom have?

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:

32g grams of oxygen gas is needed to produce 36.0 grams of water

Answer:

The burning of a candle is both a physical and a chemical change.

Explanation:

Plz mark brainliest thanks

Answer:

141.7 de Agua deben ser adicionados para preparar la solución deseada

Explanation:

El %m/m se define como la masa de soluto (En este caso, sulfato de cobre) en 100g de solución (Sulfato de cobre + Agua):

%m/m = Masa soluto / Masa soluto + Masa Agua *100

Reemplazando con los datos del problema:

15%m/m: 25g CuSO₄ / (25g CuSO₄ + Xg H₂O) * 100

0.15 = 25 /(25+X)

3.75 + 0.15X = 25

0.15X = 21.25

X = 141.7 de Agua deben ser adicionados para preparar la solución deseada

Answer:

grasslands ia the answer!

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

Explanation:

Answer:

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

Explanation:

N/A

answer: nickel element has 30 neutrons

Answer:

0.20 times 10(-5)

Explanation:

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: i think it's A.

Explanation: i cant quite explain

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:

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:

Opcion b. 3.06M y 3.4 m

Explanation:

Nuestra solución se compone de:

Soluto → NaCl (10 g)

Solvente → agua (50 g)

Primero, convertimos la masa de soluto a moles:

10 g . 1mol / 58.45g = 0.171 moles

Convertimos la masa de solvente, de g a kg → 50 g . 1kg/1000 g = 0.05 kg

m → molalidad (tipo de concentración que relaciona los moles de soluto en 1kg de solvente)

m = mol/kg → 0.171 mol/0.05kg = 3.42 m

Para calcular M, necesitamos el volumen de solución, y para eso aplicamos densidad. Antes, sumamos masa de soluto + masa de solvente, para obtener la masa de solución

50 g + 10 g = 60 g de solución

d = m /v → v = m /d → 60g / 1.08g/cm³ = 55.5 cm³

cm³ = mL

M = molaridad, la concentración que relaciona los moles de soluto en 1L de solución, pero que también podemos predecir como los milimoles de soluto en 1 mL de solución.

El volumen de solución está en mililitros → 55.5 mL

Convertimos moles a milimoles → 0.171 mol . 1000 mmol /mol = 171 mmol

M = 171 mmol /55.5 mL → 3.08 M

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:

where the wind is going

Explanation:

direction is where something is going hope it helps

Answer: number 4 Where the wind is going

Explanation:hope this helps u

Answer:

biotic

Explanation:

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

Explanation:

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:

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:

D

Explanation:

It increases fast.

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:

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:(4) pH 3 to 1

Explanation:

im 95% sure its the right answer

Answer:

responds to a stimuli or made of cells with membrane

Explanation

Answer:

Fission

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:

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