How is energy involved in physical change?

Answer:

Under normal circumstances, this molecule is quite stable. If heated, though, it will fall apart. The chemical equation 2 NaN3 --> 2 Na + 3 N2 describes exactly how it falls apart. Notice that the second product of the above reaction is N2, also known as nitrogen gas. A handful (130 grams) of sodium azide will produce 67 liters of nitrogen gas--which is enough to inflate a normal air bag.

Explanation: Because of mathmaticsit works

Nitrogen gas (N2) and sodium metal (Na) are the products of the breakdown of sodium azide.

Metal is defined as a solid with good electrical and thermal conductivity that is often hard, glossy, malleable, fusible, and ductile. The majority of metals are ductile and malleable, and they are often denser than other elements. The materials that have a propensity to donate electrons are metals. They have an electropositive makeup.

Airbags are inflated by nitrogen gas in less than a tenth of a second! Because to this design, occupants of cars are less likely to suffer severe injuries in collisions. Sodium azide, often known as NaN3, is the principal chemical involved in the air bag reaction. As a result of the heat produced, sodium azide breaks down into sodium metal and nitrogen gas, inflating the car's air bags.

Thus, nitrogen gas (N2) and sodium metal (Na) are the products of the breakdown of sodium azide.

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Answer:elements are arranged in increasing atomic number from left to right

Explanation:

Answer:

Decomposers (organisms that break down dead producers and consumers and organic waste) obtain the energy they need to live from chemical bonds of the dead and waste-matter. The energy is transferred both to the decomposer (for growth and development) and to the ecosystem (as heat energy)

Explanation:

Winds are always named from the direction it blows from

Uneven heating of Earth's surface,in turn,causes differences in air pressure at various locations. Heated air rises,creating an area of low pressure beneath. Cooler air descends, creating an area of high pressure

Answer: A proposed hypothesis is based of the scientific method, so when you are asked to put a proposed hypothesis its asking to make a prediction based on any questions, and resources you have.

Explation: Hoped it helped

Answer:

mass never changes even if It changes chemical properties.

Answer:

Mass doesn't change at all :)

Explanation:

In the given graph, the Evolved Population is showing disruptive selection. Hence, the correct option is A. Disruptive selection.

Stabilizing selection is a form of natural selection where individuals with average phenotypes are more likely to survive and reproduce their number. In this selection, the population tends to maintain a stable phenotype. As shown in the graph, the population is maximum for the population having a moderate length of neck.

Disruptive selection is a type of natural selection where extreme phenotypes are preferred over average phenotypes, leading to an increase in genetic variation and the population becoming more diverse. In this type of selection, the population diverges into two or more distinct phenotypic groups. As shown in the graph, two ranges of the population are favored for having traits for extreme lengths of the neck.

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Answer:

temperate marine

Explanation:

this is the only climate that has mild summers, but cold winters.

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer: I'm not really sure but I think its dew to the different heights and tempura going up and down and the flow of wind.

Explanation:

Answer:

Mountains make it possible for snow to be found at the equator. Why does the temperature become colder the higher up a Mountain? Generally the climate on mountains get progressively colder with increased altitude (the higher up you go).

Explanation:

Answer:

35000kgm/s

Explanation:

p = mv

p = 7000kg x 5m/s

p = 35000kgm/s

Answer: p = 35000

Explanation:

p = m*v

Answer:

Sodium

(Na)

Just count the electrons and search which atom it is.

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Hello there!

How is density different from weight and mass you say? It's simple!

1. Unlike weight, density is composed of mass and volume.

2. By dividing the mass over the volume, you can determine an object's density, while weight is the product of mass and gravity.

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The litmus paper shows red colour for acidic substances and blue colour for basic substances. Thus a red litmus paper will turn blue if it is dipped in an alkaline solution. Soap is  alkaline and given blue color to litmus.

pH of a substance is its measure of concentration of H+ ions in it. It is mathematically negative logarithm of H+ ion concentration. Thus, pH measures how much acidic or basic the solution is.

A pH of of 7 is neutral having no acidity or basicity. A pH less than 7 is acidic and pH greater than 7 is basic in nature. Vinegar is acetic acid and it shows less pH . Lemon juice also acidic since it contain citric acid whereas, soap is basic.

A litmus paper is used to identify whether a substance is acidic or basic. It shows red color for acidic solutions and blue for basic solutions. If the red litmus paper is dipped in acidic one, it shows no colour change if it is dipped in basic solution then it turns to blue.

Soap is highly alkaline and it changes red litmus paper to blue.

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Answer:

wet cloudy weather

Explanation:

The answer is D. cloudy, wet weather

This is because:

Air rises near areas of low pressure, and it's a general rule of meteorology that when air rises, it cools and condenses. That's because the temperature is higher in the upper part of the atmosphere. As water vapor condenses, it results in clouds, precipitation, and generally unsettled weather.

Therefore the answer is D.

Answer:

I do experiment with salicylic acid

Explanation:

I I think you have to run and write the equation that you made in salicylic acid because salicylic acid is very harmful to us human have skin that is made up of Cleveland Clinic

Answer:

d after any reptile that is poisinis when it dies the amount of poisin becoms weaker becuase its rrying to kill air but it kill nothing

Explanation:

Answer:

462

Explanation:

Answer: I think is 380m wave speed

Explanation:

Answer: Balance the following equation: C3H8 + O2 ---> CO2 + H2O

c. The atom becomes positively charged

if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom