When an element exist in nature by itself, it must have a charge of

A plant was placed in the corner of a room away from a window. What might you observe about the plant after five days?

DIA [1.3K]

Answer:

1. A. The plant leans toward window.

Explanation:

Plants need light to perform photosynthesis and live. Therefore, this means the plant will always lean toward light in order to survive.

- Hope that helps! Please let me know if you need further explanation.

8 0

3 years ago

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WHICH STATE OF MATTER IS THIS: PARTICLES VIBRATE AND CHANGE POSITION

SVETLANKA909090 [29]

Answer: Gas. Gas vibrates and move freely at high speeds.

Explanation:

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4 years ago

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Balance the equation for magnasuin and oxygen to yield magnasuimoxide

Minchanka [31]

Answer:

2Mg + O₂ → 2MgO

Explanation:

Chemical equation:

Mg + O₂ → MgO

Balanced chemical equation:

2Mg + O₂ → 2MgO

The balanced equation s given above and it completely follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

Steps to balanced the equation:

Step 1:

Mg + O₂ → MgO

Mg = 1 Mg = 1

O = 2 O = 1

Step 2:

2Mg + O₂ → MgO

Mg = 2 Mg = 1

O = 2 O = 1

Step 3:

2Mg + O₂ → 2MgO

Mg = 2 Mg = 2

O = 2 O = 2

6 0

4 years ago

Scientists have developed the Atomic Theory over a period of hundreds of years. What will help us further the development? A. in

stepladder [879]

Answer:

A. increasing the ability of technology, like microscopes, to see even smaller particles

8 0

3 years ago

You make an experiment to determine the percent mass of carbon in sugar. You find out that there is 46.63g of carbon in 75.00g o

Aleksandr [31]

Taking into account the definition of percentage composition, the percent composition of carbon in this sample is 62.17%.

<h3>Percentage composition</h3>

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

Then, the percentage by mass expresses the concentration and indicates the amount of mass of solute present in 100 grams of solution.

In other words, the percentage by mass of a component of the solution is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.

The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage. This is:

$percentageby mass= \frac{mass of solute}{mass of solution}x100$