PLSSSS ANSWERRRRRR?????

Answer:

Atacama

Explanation:

Answer:

B) go look on the periodic table for the atomic number

Explanation:

The atomic number is how many protons is in an atom

Answer:

Either A or B

Explanation: Because I learned it on Edge. :)

Answer:

D)both the forward and reverse reactions continue.

Explanation:

Chemical equilibrium can be regarded as state whereby rate of the forward reaction is equal to rate of backward reaction. It should be noted that At equilibrium both the forward and reverse reactions continue.

Answer:

Lithosphere: Volcanos..

Hydrosphere: Rain falls..

biosphere: Plants..

Explanation:

Answer:

yes

Explanation:

solubility rules allow prediction of what products will be insoluble in water.

Answer:

Copper(II) sulphate – sodium hydroxide reaction

The reaction between copper(Il) sulphate and sodium hydroxide solutions is a good place to start. If you slowly add one to the other while stirring, you will get a precipitate of copper(II) hydroxide, Cu(OH)2.

Answer:

La respuesta correcta es: Al aumentar la temperatura se dilata con facilidad

Explanation:

El mercurio (Hg) es un elemento metálico que a temperatura ambiente es un líquido. Tiene la propiedad de dilatarse con facilidad al aumentar la temperatura, propiedad que ha sido utilizada en los termómetros de mercurio. En estos termómetros, el mercurio está dentro de un tubo de vidrio graduado con un bulbo para transmitir el calor. Al estar en contacto con un cuerpo más caliente (a mayor temperatura), el mercurio del interior del termómetro se dilata (expande su volumen) y asciende por el tubo indicando la temperatura correspondiente, graduada en el vidrio.

Answer:

The length of the log is 180 cm

Explanation:

From the question given above, the following data were obtained:

Time = 2 hours

Speed = 1.5 cm/min

Distance =?

Next, we shall convert 2 hours to minutes. This can be obtained as follow:

1 h = 60 mins

Therefore,

2 h = 2 × 60

2 h = 120 mins

Finally, we shall determine the Lenght of the log. This can be obtained as follow:

Time = 120 mins

Speed = 1.5 cm/min

Distance =?

Speed = distance / time

15 = distance / 120

Cross multiply

Distance = 1.5 × 120

Distance = 180 cm

Therefore, the length of the log is 180 cm

Answer:

180

Explanation:

Answer:

1.1grams

Explanation:

Find moles of water:

4.5x10^22/(6.02x10^23)=0.07mol

Find molar mass of the water

O=16.00g/mol

0.07x 16.00=1.1 grams

Explanation:

these are the formula that u need to know

1. moles= concentrate × volume

2. moles = mass / mr

3. moles = volume in dm3 / 24dm^3

4. moles = Pressure in pa × Volume in m3 / 8.031 × temperature in K

hope this helps :)

Answer:

94.1 %

Explanation:

We firstly determine the equation:

2H₂O + O₂ →  2H₂O₂

2 moles of water react to 1 mol of oxygen in order to produce 2 moles of oxygen peroxide.

We convert the mass of oxygen to moles:50 g . 1mol /32g = 1.56 mol

Certainly oxygen is the limiting reactant.

2 moles of water react to 1 mol of oxygen.

13 moles of water may react to 13/2 = 6.5 moles. (And we only have 1.56)

As we determine the limiting reactant we continue to the products:

1 mol of O₂ can produce 2 moles of H₂O₂

Then 1.56 moles of O₂ will produce (1.56 . 2) = 3.125 moles

We convert the moles to mass: 3.125 mol . 34 g/mol= 106.25 g

That's the 100% yield or it can be called theoretical yield.

Percent yield = (Yield produced / Theoretical yield) . 100

(100g / 106.25 g) . 100 = 94.1 %

Answer:

c: low melting point

Explanation:

melting point is dependent on intermolecular forces. in covalent compounds, electrons are shared more equally. this means there is less separation of positive and negative charges within the molecules.

Answer:

0.432 mol

Explanation:

Divide the given number of molecules by Avogadro's constant. Avogradro's constant is the number of atoms/molecules in a mole of a substance.

Therefore,

2.60

⋅

10

23

molecules

6.022

⋅

10

23

molecules/mol

=

0.432175 moles

≈

0.432 moles

Explanation:

Answer:

320 grams of sulfur trioxide are required to produce 4.00 mol of sulfuric acid.

Explanation:

The balanced reaction is:

SO₃ + H₂O → H₂SO₄

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Being the molar mass of each compound:

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Then you can apply the following rule of three: if 1 mole of sulfuric acid is produced by the reaction of 80 grams of sulfur trioxide, 4 moles of sulfuric acid is produced from how much mass of sulfur trioxide?

[tex]mass of sulfur trioxide= \frac{4 moles of sulfuric acid* 80 grams of sulfur trioxide}{1 mole of sulfuric acid }[/tex]

mass of sulfur trioxide= 320 grams

320 grams of sulfur trioxide are required to produce 4.00 mol of sulfuric acid.

The mass of the required compound is 320 grams

Given the chemical equation expressed as:

[tex]SO_3 + H_2O \rightarrow H_2SO_4[/tex]

According to stochiometry, 1 mole of SO3  produces 1 mole of H2SO4, hence the moles of SO3 will also be 4.00moles

Determine the mass of SO3

Mass = mole * molar mass

Mass = 4.0 * [32+3(16)]

Mass = 4.0 * 80

Mass = 320 grams

The mass of the required compound is 320 grams

Learn more on stoichiometry here:  https://brainly.com/question/16060223

Answer:

0.0025moles

Explanation:

Molarity of a solution (M) = number of moles (n) ÷ volume (V)

According to this question, to make 250 mL of a 0.01 M solution of CaCl, the following number of moles is needed:

Volume = 250mL = 250/1000 = 0.250Litres.

Using; molarity = n/V

0.01 = n/0.250

n = 0.0025

n = 2.5 × 10^-3 moles.

Answer:

company smokes

wastes (liquid and solid)

Answer:

C.) Earthquake

Explanation:

Most mountains occur due to the movement of tectonic plates. They slowly push into each other, and the earth's crust rises over time forming mountains.

Earthquakes occur due to the shift of tectonic plates. It sends seismic waves throughout the earth's crust, and causes the ground to shake temporarily.

Answer:

brainly blurred the half of the question i cant read it completely

Explanation:

Answer:

The temperature is 12.35 C.

Explanation:

An ideal gas is a theoretical gas that is considered to be composed of point particles that move randomly and do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of the gases:

P * V = n * R * T

In this case:

Replacing:

2.15 atm* 35.28 L= 3.24 moles* 0.082[tex]\frac{atm*L}{mol*K}[/tex] * T

Solving:

[tex]T=\frac{2.15 atm* 35.28 L}{3.24 moles* 0.082\frac{atm*L}{mol*K}}[/tex]

T=285.5 K= 12.35 C (being 273.15 K= 0 C)

The temperature is 12.35 C.

The relation between the moles, volume, temperature, and pressure is given by the ideal gas equation. The temperature of a gas is 12.35 celsius.

The ideal gas law is the hypothetical gas law that depicts the relation between pressure, volume, moles of the compound, and the temperature of the gas.

The ideal gas equation is given as,

[tex]\rm PV = nRT[/tex]

Given,

Pressure (P) = 2.15 atm

Volume (V) = 35.28 L

Number of moles (n) = 3.24 mol

Gas constant (R) = 0.082

Temperature (T) = ?

Substituting values in the above equation, the temperature is calculated as:

[tex]\begin{aligned} \rm T &= \rm \dfrac{PV}{nR}\\\\&= \dfrac{2.15\times 35.28}{3.24 \times 0.082}\\\\&= 286.23 \;\rm K\end{aligned}[/tex]

Therefore, 12.35 degrees Celsius is the temperature of the gas.

Learn more about ideal gas law here:

https://brainly.com/question/4406716

Answer:

C. 1.6 atm

Explanation:

PV = nRT

Solve for P --> P = nRT/V

n = 3.0 mol

R = 0.08206 L atm / mol K

T = 400.0 K

V = 60.0 L

P = (3.0)(0.08206)(400.0) / (60.0) = 1.6 atm

Answer:

High blood pressure. High blood pressure (hypertension) is one of the most important risk factors for CVD.

High cholesterol - High-fat diet.

Answer:

I am not yet sure on my answer

I would not want to give you wrong answers

Sorry

Explanation:

Competition stems from the fact that resources are limited. There are simply not enough of some resources for all individuals to have equal access and supply. Competition can occur between organisms of the same species, or between members of different species.

Answer:

i fond nothing sooory

pic so PC

Answer:

I would say 17.25.

Explanation:

Answer:

Special type of surface that repels liquid

Explanation: