All categories

2 years ago

Magnesium is a highly flammable element which is easily combustible in the presence of oxygen:

Physics

2 answers:

Juli2301 [7.4K]2 years ago

7 0

Answer:

Explanation:

4 atoms would be produced, since the reactants are 2 atoms of magnesium and 1 molecule of diatomic oxygen (which contains 2 atoms). Due to the law of conservation of matter, the total number of atoms can not increase or decrease in a chemical reaction.

NemiM [27]2 years ago

3 0

4 atoms

Explanation:

On the product side, we expect to find 4 atoms of the product.

An atom is the smallest indivisible particle that takes part in a chemical reaction.

An element is a distinct substance that cannot be split-up into simpler substances. Such substances consist of only one kind of atom.

In this reaction we have:

2 elements: Mg O

on the reactant side:

We have two moles of Mg: 2 atoms of Mg

1 mole of oxygen gas: 2 atoms of O

total atoms: 4 atoms

According to the law of conservation of matter "in a chemical reaction, matter is neither created nor destroyed".

We expect to find 4 atoms of products which is MgO on the product side.

2Mg + O₂ → 2MgO + heat

Learn more:

Conservation of matter brainly.com/question/2190120

#learnwithBrainly

You might be interested in

Colulate the wavelength of i)a ball moving of 40m/s i i)A proton moving at 40 ms i i i) An election moving at 40m/s

Sergio [31]

Explanation:

$thank \: you$

8 0

2 years ago

Which of the following best represents a decomposition reaction?

Fed [463]

Answer: AB-> A+B

Explanation:

Chemical decomposition is the breakdown of a single entity into two or more fragments. Chemical decomposition is usually regarded and defined as the exact opposite of chemical synthesis. In short, the chemical reaction in which two or more products are formed from a single reactant is called a decomposition reaction.

4 0

3 years ago

w strong are you? Could you turn a moving car with just your own strength? No way! If a normal driver inputs about 50 N of force

malfutka [58]

The mechanical advantage of a simple machine is the measure of its amplified force gain.

The mechanical advantage is defined as the force amplified by a machine to the force required to generate such output.

$Mathematically\ mechanical\ advantage\ MA=\frac{F_{o}} {F_{i}}$

$F_{o} \ and\ F_{i}$ are the amplified force and applied force. We may also consider them as output and input force.

In the given question, the force given to the steering wheel is 50 N.

The output force produced by the steering wheel is 3750 N.

Hence the mechanical advantage will be-

$MA=\frac{F_{o}} {F_{i}}$

$=\frac{3750\ N}{50\ N}$

$=75$ [ans]

3 0

2 years ago

The momentum of a falling rock is found to be 200 kg m/s. What is the mass of the rock if it falls with a velocity of 5.0 m/s

Snezhnost [94]

Answer:

$\boxed {\boxed {\sf 40 \ kilograms}}$

Explanation:

Momentum is the product of velocity and mass. The formula is:

$p=m*v$

We know the rock is falling. Its momentum is 200 kilograms meters per second and its velocity is 5 meters per second. Substitute the values into the formula.

$200 \ kg \ m/s = m * 5.0 \ m/s$

We are solving for m, the mass. We must isolate the variable. It is being multiplied by 5 meters per second. The inverse of multiplication is division, so we divided both sides by 5.0 m/s.

$\frac{200 \ kg \ m/s}{5.0 \ m/s}=\frac{ m* 5.0 \ m/s }{5.0 \ m/s}$

$\frac{200 \ kg \ m/s}{5.0 \ m/s}=m$

The units of meters per second (m/s) cancel.

$\frac{200 \ kg}{5.0 } =m$

$40 \ kg = m$

The falling rock has a mass of <u>40 kilograms.</u>

4 0

2 years ago

Use examples to explain how the geosphere interacts with two other of Earth's spheres. Explain the interaction for each using co

Orlov [11]

The geosphere interacts with the hydrosphere when water causes rock to erode. The atmosphere provides the geosphere with heat and energy for erosion, and the geosphere reflects the sun's energy back into the atmosphere.

7 0

2 years ago

Read 2 more answers