What type of elements are in s-block

Answer:

A. It increases the concentration of OH in solution.

Explanation:

Answer:

B. It increases the concentration of Hi in solution.

Explanation:

A.p.e.x

Answer: Thus 9.75 moles of iron will be required.

Explanation:

The balanced chemical reaction is:

[tex]2Fe+3O_2\rightarrow 2Fe_2O_3[/tex]  

According to stoichiometry :

2 moles of [tex]Fe_2O_3[/tex] are produced by= 2 moles of [tex]Fe[/tex]

Thus 9.75 moles of [tex]Fe_2O_3[/tex] are produced by=[tex]\frac{2}{2}\times 9.75=9.75moles[/tex]  of [tex]Fe[/tex]

Thus 9.75 moles of iron will be required.

Answer:

Potassium sulfate

Explanation:

I searched it up on the internet

Can I please have a brainliest

Answer:

bleaching powder is actually a mixture of calcium chloride, calcium hydroxide and calcium hypochlorite. hence it is not a single salt. It is not completely soluble in water as it composed of heavy calcium salts, which are known to be insoluble in water.

Answer:

It does disolve

Explanation:

It depends on how much bleaching powder you're trying to dissolve in water

Answer:

d

Explanation:

Of the given options, Lithium (Li) would most readily react with water.  

• The substances that spontaneously go through a chemical reaction with water, as they are highly reducing in nature are known as water reactive substances.  

• The alkali metals and the alkaline earth metals are the metals that reacts the most with water.  

• In the periodic table, the alkali metals, that is, lithium, sodium, potassium, rubidium, caesium, and francium are the most reactive metals.  

• They all react explosively and vigorously with cold water leading to the displacement of hydrogen.  

• The alkaline earth metals are the second most reactive metals in the periodic table apart from Be, which does not react with water.  

Thus, Li is the alkali metal that reacts readily with water.

To know more about:

https://brainly.com/question/22082130

Answer:

Bromine test is used to test the unsaturation of hydrocarbons.

Explanation:

Answer:

PULLEY

Explanation:

A pulley is an example of a simple type of machine. It is either a wooden or a metallic disc which can rotate about a horizontal axis passing through its centre. It has a grooved rim along which a rope or chain can slide. It is generally mounted in a frame work called a block.

Answer:

Sugar

Explanation:

This is because water and carbon dioxide are required during photosynthesis. Oxygen along with glucose, that is a type of sugar is produced. The oxygen is diffused out in to the air, while the sugars are stored in the leaf thus light energy captured during photosynthesis is stored as 'sugar'

Answer:

because air pressure crushes masses and or grams that have a stronger gravitaional  

pull

Answer:

KCI

Explanation:

Answer:

KCI

Explanation:

the most massive will have the smallest percent of Cl

Answer:

Mostly, the molecule has a planar geometry allows free rotation of bonds. The chemical structure of the compound could be given as below. Urea Formula Molecular Mass. This molecule is generally available in final products of proteins of metabolism of humans and animals. Its main existence can be felt in the urine of humans that is formed

Explanation:

the molecular formula of urea is CH4ON2 if the %by mass of 02 atoms is one mole of urea molecule is 26.66%

Answer: They can be apllied to the senario he can pettition or he can use bigger bags those are just a couple of ideas.

Answer:

1-1) NaHCO3 + CH3COOH --> NaCH3COO + H2O + CO2

1-2) 0.5 mole of CO2

2-1) 2C4H10 + 13O2 --> 8CO2 + 10H2O

2-2) 4 mol CO2

Explanation:

Question 1

NaHCO3 + CH3COOH --> NaCH3COO + H2O + CO2

To balance the equation, count the number of atoms on both sides of the equation

(1 Na, 1+3+1H, 1+1+1C, 3+2Oxygen) --> (1 Na, 1+1+1C, 3+2H, 2+1+2Oxygen)

Combining the pluses will give you the following

(1 Na, 5H, 3C, 5Oxygen) --> (1 Na, 3C, 5H, 5Oxygen)

Both sides are the same, therefore the chemical equation is balanced (originally).

From the equation, we can see that 1 mole of NaHCO3 produces 1 mole of CO2.

So that means 0.5 mole of NaHCO3 would produce 0.5 mole of CO2.

Question 2

C4H10 + O2 --> CO2 + H2O

Again, count the number of atoms on both sides of the equation

(4C, 10H, 2O) --> (1C, 2H, 3O)     This time left does not equal right side

You now need to find factors that can make both sides equal.

C4H10 + O2 --> 4CO2 + H2O    Now the C is balanced, let's recount

(4C, 10H, 2Oxygen) --> (4C, 8+1Oxygen, 2H)      H&O is still not balanced

C4H10 + O2 --> 4CO2 + 5H2O    Now the H is balanced, let's recount

(4C, 10H, 2Oxygen) --> (4C, 8+5Oxygen, 10H)      O is still not balanced

C4H10 + (13/2)O2 --> 4CO2 + 5H2O    Now the O is balanced

(4C, 10H, 13Oxygen) --> (4C, 13Oxygen, 10H)

But because 13/2 is a fraction, we want to eliminate that by multiplying every reactant and product by 2 (the denominator).

2C4H10 + 13O2 --> 8CO2 + 10H2O    Now it's completely balanced!

(8C, 20H, 28Oxygen) --> (8C, 28Oxygen, 20H)     Yayy! It's balanced.

Now, 2 mol C4H10 produces 8 mol CO2.

So 1 mol C4H10 produces 4 mol CO2.

Answer:

All matter contains heat energy. Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases. Heat energy can be transferred from one object to another. The transfer or flow due to the difference in temperature between the two objects is called heat.

Explanation:

Answer:

The Answer is (C)

Explanation:

Reasons are when anything cools or condenses it tends to be more solid, and solids don't move.

Loss of energy and decreased freedom of particle motion describes the changes that take place when a gas condenses. The correct option is option C.

The phases of matter, such as liquid, solid, and gas, are its states, yet even in distinct phases, matter can still be in the same condition. Liquid mixes, for instance, can have several phases, including an oil phase as well as an aqueous phase.

On a phase diagram, equilibrium states may also be referred to as phases. Because the characteristics that define the phase include the structure of matter as well as elements like temperature and pressure, when the word "phase" is employed in this context, it is frequently used synonymously with a state of matter. Loss of energy and decreased freedom of particle motion describes the changes that take place when a gas condenses.

Therefore, the correct option is option C.

To know more about phase, here:

https://brainly.com/question/13183722

#SPJ6

Answer:

42.875cm³ ; 422.73 cm³

Explanation:

Given that:

Volume of a cube (V) = a³

a = 3.5cm

V of a cube = (3.5cm)^3

Volume of a cube = 3.5cm * 3.5cm * 3.5cm

Volume of a cube = 42.875cm³

Volume of a Sphere, V = 4πR²

V = 4 * π * 5.8²

V = 4 * π * 33.64

V = 422.73270

V = 422.73 cm³

Answer:

A calculator has an endifiite shape because all of its atoms are touching each other

Answer:

See explanation

Explanation:

While it is true that there are only about 90 naturally occurring elements, these elements are capable of combining with each other to form millions of substances.

Most of the substances that we see around us today result from a combination of one or more of these naturally occurring elements.

Let us look at three examples;

The carbohydrate in food is composed of carbon, hydrogen and oxygen

The stainless steel materials we use are composed of iron, carbon and other trace elements

Glass is made up of silicon, oxygen and other elements

Only 90 naturally occurring elements capable of combining with each other to form millions of substances.

Compounds:

When two or more elements combine in a certain ratio to form a molecule.

For example-

Water is made up of two hydrogen and one Oxygen ration is 2:1.

If hydrogen and Oxygen combine inn 2:2, they for Hydrogen peroxide.

Water gives life and Hydrogen peroxide can kill a person.

Other examples are,

Therefore, only 90 naturally occurring elements capable of combining with each other to form millions of substances.

To know more about Compounds,

https://brainly.com/question/13119094

Answer:

William Shakespeare (bapt. 26 April 1564 – 23 April 1616)[a] was an English playwright, poet, and actor, widely regarded as the greatest writer in the English language and the world's greatest dramatist.[2][3][4] He is often called England's national poet and the "Bard of Avon" (or simply "the Bard").[5][b] His extant works, including collaborations, consist of some 39 plays,[c] 154 sonnets, two long narrative poems, and a few other verses, some of uncertain authorship. His plays have been translated into every major living language and are performed more often than those of any other playwright.[7] They also continue to be studied and reinterpreted.

Shakespeare was born and raised in Stratford-upon-Avon, Warwickshire. At the age of 18, he married Anne Hathaway, with whom he had three children: Susanna and twins Hamnet and Judith. Sometime between 1585 and 1592, he began a successful career in London as an actor, writer, and part-owner of a playing company called the Lord Chamberlain's Men, later known as the

Answer:

A

Explanation:

Answer:

wind is just high and low pressure of air, when a high pressure comes and crashes into a low pressure air pocket than it can form a wind storm.

Explanation:

The Uneven heating of the Earth's surface. Earth's rotation and unequal heating of the Earth's surface. air pressure towards regions of lower air pressure. ... air moving from areas of high pressure to areas of low pressure.

This is what will most likely cause a sudden wind to start blowing.

Answer:

It help cause we compost food scraps and other organic wastes. We also reuse and recycle materials to organize for government and industry to develop community recycling materials.

It depend on your opinion as a student.

Explanation:

Hope it helps

Organizing a community to collect waste  and implementing ecological solid waste management greatly helps to reduce pollution and landfilling also creates ideas for recycling.

In order to build and sustain an efficient waste management programme, community-based waste management are partnerships between non-governmental organizations, governmental organizations, and the affected communities.

Community based waste management helps to direct participation and accountability of community members monitoring the collection and reduction of trash waste separation at the homestead level

Similarly they are using priceless and reusable goods on-site , recycling organic trash as well as public collection service collects and transports garbage to a treatment facility.

Find more on waste management:

https://brainly.com/question/14665452

#SPJ2

Answer:

Happy Face excellent song

Explanation:

and gravity takes the book and pulls it to the ground

Answer:

sorry I don't understand this subject sorry

Explanation:

Answer:

2FeO + C ---> 2Fe +CO2

Explanation:

Answer:

C

Explanation:

Temperature, humidity, and pressure are all the same through an air mass.