All categories

3 years ago

Que es la actividad física y en qué mejora

1 answer:

4 0

La actividad física regular puede mejorar su fuerza muscular y aumentar su resistencia. El ejercicio proporciona oxígeno y nutrientes a sus tejidos y ayuda a que su sistema cardiovascular funcione de manera más eficiente. Y cuando la salud de su corazón y pulmones mejoran, tiene más energía para hacer frente a las tareas diarias. Encantado de ayudarle

You might be interested in

A compound is 21.6% Mg, 21.4% C, and 57.0% O. What is the empirical formula of the compound?

nignag [31]

Answer:

Compound x = $MgC_{2}O_{4}$

Explanation:

Let the compound be x

Assuming we have a 100g of compound x

Given the following data;

Magnesium, Mg = 21.6% = 21.6g

Carbon, C = 21.4% = 21.4g

Oxygen, O = 57.0% = 57.0g

Now, we would find the amount of moles for each element.

Atomic mass of Mg = 24.30g

Atomic mass of C = 12.01g

Atomic mass of O = 16.00g

Amount of moles for Mg;

21.6*(1/24.30) = 0.89mol

Amount of moles for C;

21.4*(1/12.01) = 1.78mol

Amount of moles for O;

57.0*(1/16.00) = 3.56mol

We then divide by the smallest to find the ratio;

0.89/0.89 = 1 Mol of Mg

1.78/0.89 = 2 Mol of C

3.56/0.89 = 4 Mol of O

Therefore, the ratio of Mg, C and O is 1:2:4.

Compound x = $MgC_{2}O_{4}$

Hence, the empirical formula of the compound is $MgC_{2}O_{4}$

7 0

3 years ago

Write equations to show whether the solubility of either of the following is affected by pH:(b) Ca₃(PO₄)₂.

Vera_Pavlovna [14]

The pH of the solution is also increased.

What is pH and its importance?

pH is an important quantity that reflects the chemical conditions of a solution.
The pH can control the availability of nutrients, biological functions, microbial activity, and the behavior of chemicals.
The pH is then calculated using the expression: pH = - log [H3O+].

The solubility of an ionic compound is affected by the hydronium ion concentration.
Addition of H₃O⁺ to the anion of a weak acid, increases the solubility of the ionic compound.

Therefore, the pH of the solution is also increased.

Learn more about pH

brainly.com/question/491373

#SPJ4

8 0

2 years ago

17. En la reacción de zinc con oxígeno, el zinc:

Goshia [24]

Answer:b

Explanation:

5 0

4 years ago

The car has a mass of 1200kg. The car has a forward force of 3400N but friction has a force of 400N going against it. What is th

jonny [76]

The acceleration of the car : 2.5 m/s²

<h3>Further explanation</h3>

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object

∑F = m. a

<h3 />

Mass of the car = 1200 kg

Forward force = 3400 N

Friction force = 400 N

The direction of motion of the friction force will be opposite to the forward force, so that both of them can be subtracted to get the value of the net force (net force: combination / sum of all forces acting on an object)

$\tt \sum F=3400-400=3000~N$

So the acceleration :

$\tt a=\dfrac{\sum F}{m}\\\\a=\dfrac{3000}{1200}\\\\a=2.5~m/s^2$

6 0

3 years ago

Which of the following words correctly describes CO2? Select all that apply

MaRussiya [10]

CO2 is a compound, hope this is okay

7 0

3 years ago