Author: univerkov
education

How much ammonia can be oxidized on the catalyst if 56L air is used for this? (the proportion of oxygen in the air is 20%) 4NH3 + 5O2

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education

The athlete, using a movable block, lifted the load to a height of 2.5 m, applying a force of 240 N. to the free end of the rope.

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education

We calculate the mass of copper using the formula: m = ρ * V, where m is the required mass of copper (kg), ρ is the density of

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education

The bases of an isosceles trapezoid are 1 cm and 17 cm, and the diagonal divides its obtuse angle in half. Find the area of the trapezoid. Since

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education

Methods for cleaning substances based on the difference in density: – upholding; Heavier substances settle to the bottom, and lighter ones float. For example: A mixture of iron

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education

The driving time of the car can be calculated using the formula: t = S / V, where S is the distance covered by the car (S =

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education

The bases of the trapezoid are 9 and 54, one of the sides is 27, and the cosine of the angle between it and one of the bases

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education

The area of a right-angled triangle is 50 √ 3 thirds. One of the acute angles is 60 °. Find the length of the leg opposite this corner.

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education

Given: ω approx. = 25% m (CH3COOH) = 30 kg = 30,000 g Find: m (CaC2) -? Solution: 1) CaC2 + 2H2O => Ca (OH) 2 + C2H2

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education

A ball with a mass of 1 kg moving at a speed of 4 m / s collides with a ball with a mass of 8 kg, which

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