what happens to the earth's oceans because of #8

Answer:

wouldn't it be the #2 because +∆H um I forgot

Answer:

solute

Explanation:

The substance being dissolved is called a solute. The thing the solute is being dissolved in is called a solvent.

Answer:

this is true

Explanation:

because the sand is left behind for it isn't magnetic

Answer:

Different uses of Metals

Metals are usually very strong, most durable and highly resistant to everyday wear and tear. As such, they have been used since ancient times for a lot of things. And even today with advances in technology and a lot of other things the uses of metals have broadened greatly. Metals even play a key role in the economy. Let’s look at some important and popular metals uses.

In the Construction Industry

In electronics

In medicine

Machinery, Refractory and Automobiles

Decorative products

Other Uses

In the Construction Industry

Metals are the main component in the construction industry. Metals like iron, steel amongst others are the main materials used in construction of buildings and even homes.

In Electronics

Another important application of metals are in electronics. As metals are good conductors of electricity, they are used to making wires and parts for equipments and gadgets that function on electrical current. Popular examples include, TV, mobiles, fridge, iron, computers etc.

In medicine

If you are wondering how, well from a biological perspective metals are found as micro-elements in our bodies. Besides, the presence of metal elements is crucial for several functions like transmission of nerve impulses, oxygen flow, reaction between enzymes etc. Some medicines are therefore liaised with metal compounds to treat certain deficiencies or sickness. Metals like, iron, calcium, magnesium, potassium titanium, and aluminum are used commonly in medicine in the form of antacids.

Apart from this, most of the equipments and tools used are made from metals.

Machinery, Refractory and Automobiles

This is one of the most common use of metals. They are used extensively in manufacturing machines for industries, agriculture or farming and automobiles which include road vehicles, railways, airplanes, rockets etc. Here, the commonly used metals are iron, aluminum and steel.

Besides these, most of the utensils that is used in the kitchen are made from metals like steel, aluminum, and copper. Due to a high temperature withstanding nature metals are preferred the most.

Decorative products

Metals such as platinum, gold, and silver come under the category of precious metals and have high economical value. These metals are widely used in making jewellery sets or for some decorative piece.

Other Uses of Metals

Some other uses and applications of metals are, they play an important role in security as the metals are used in making locks, strong safe, doors etc. Apart from this, furnitures are made from metal these days. Metals also find their uses in the military where they are used to manufacturing weapons and ammunitions. Some metals are used in galvanizing to protect from rusting.

These are some popular uses of metal. To know more about metals, different types, properties of metals and more you can keep visiting BYJU’S or you can also download our app for interesting content and learning experience

Answer:

a system of government by the whole population or all the eligible members of a state, typically through elected representatives.           its like everyone has a choiceExplanation:

Answer:

Demorcay  is:The form of government of the entire population or of all qualifying members of the state, generally by elected representatives:

Explanation:

Answer:

No they are not the same..

Explanation:

Absolute temperature is the temperature of an object on a scale where 0 is in the lowest possible energy state while the kelvin is a base unit of temperature.

Answer:

Alcohol, 0.63 I don't know the rest the rest

Explanation:

Answer:

Explanation:

1. Alcohol

2. Marker 1

3. Purple

4. Marker 2

Filling out the lab paper gives you the answers. These were all correct.

Explanation:

let's make this swamp great again

Answer:

omoih

Explanation:

Answer: hello mason

Explanation: figure it out yourself

Explanation:

molecules NH3 = 1.47 moles x 6.02x1023 molecules/mole = 8.9x1023 molecules of NH3 (to 2 sig. figs.)

Answer:

4L

Explanation:

The first thing to do here is make sure that you have a balanced chemical equation. The equation given to you is actually unbalanced, so focus on writing a balanced version

2

C

2

H

6(g]

+

7

O

2(g]

→

4

CO

2(g]

+

6

H

2

O

(g]

Now, the problem provides you with a mass of ethane,

C

2

H

6

, and asks for the volume of carbon dioxide,

CO

2

, formed by the reaction at STP, Standard Temperature and Pressure.

As you know, STP conditions are defined as a temperature of

0

∘

C

and a pressure of

100 kPa

. Under these specific conditions, one mole of any ideal gas occupies exactly

22.7 L

- this is known as the molar volume of a gas at STP.

So, what this means is that if you know how many moles of carbon dioxide are produced by the reaction, you can use the molar volume of the gas to find the requested volume.

Use the molar mass of ethane to determine how many moles you'd get in that

240.0-g

sample

240.0

g

⋅

1 mole C

2

H

6

30.07

g

=

7.9814 moles C

2

H

6

Now, notice that you have a

2

:

4

mole ratio between ethane and carbon dioxide. Since ethane reacts with excess oxygen, you can assume that all the moles will take part in the reaction.

This means that the reaction will produce

7.9814

moles C

2

H

6

⋅

4

moles CO

2

2

moles C

2

H

6

=

15.9628 moles CO

2

So, if one mole of any ideal gas occupies

22.7 L

at STP, this many moles will occupy

15.9628

moles CO

2

⋅

22.7 L

1

mole CO

2

=

362.4 L

The answer is rounded to four sig figs, the number of sig figs you have for the mass of ethane.

Answer:

nervous system- sends signals to the brain

respiratory system- sends oxygen to the body

Answer:

Liquid has the following properties -

- Liquids are almost incompressible due to the fact that molecules do not have a lot of space between them so they can not be compressed.

- Liquids have a fixed volume but shape varies according to the container it is placed in. It changes the shape even the volume is the same.

- Liquids flow from higher to lower levels.

- Liquids have their boiling points above room temperature, under normal conditions.

Measure the volume of a liquid sample-

The volume of the liquid can find out by dividing the mass of the liquid by the density of the liquid. D = m/v. The density of water is 1 gram/cubic centimeter.

Explanation:

D. 100g, because the volume of gas inside the balloon has increased​

In chemical reactions that occurs in closed systems, the amount of matter is conserved. The total mass of the system is conserved because the gas did not escape and the volume has increased,

Answer:

d

Explanation:

Answer:

-1

Explanation:

Answer:1,5,4

Explanation:

Answer:

hydrogen atom and oxygen atom

Answer:

it's probably just a ball of metal

Explanation:

maybe a metal marble.

Answer:

The hotter the substance, the more its molecules vibrate, and therefore the higher thermal energy

:)

Answer: Hot water has more thermal energy because the particles are farther apart thus they are moving faster. As particles move faster their thermal energy increases.

Explanation: Look in answer

Answer:

Yes it is

Explanation:

You use electricity to power the blender itself, then after you power it the potential energy becomes kinetic energy which equals mechanical energy in the blender. So yes, a blender is an example of electrical to mechanical energy.

Answer: Enthalpy is the heat content of a system. The enthalpy change of a reaction is equivalent to the amount of energy lost or gained during the reaction. A reaction is favoured if the enthalpy of the system decreases over the reaction. Entropy refers to the measure of the level of disorder in a thermodynamic system.

Explanation: hi lol

The result of the atomic theory was that chemists began to better understand the properties of matter. Therefore, option (D) is correct.

The atomic theory, proposed by John Dalton in the early 19th century, postulated that matter is composed of indivisible particles called atoms. This theory revolutionized the field of chemistry by providing a framework to understand the behavior and interactions of different substances.

By recognizing that matter is composed of discrete atoms with specific properties, chemists were able to explain phenomena such as chemical reactions, the conservation of mass, and the formation of compounds. The atomic theory laid the foundation for modern chemistry, leading to advancements in understanding the structure of atoms, the development of the periodic table, and the ability to manipulate and engineer materials at the atomic level.

Learn more about atomic theory, here:

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