Please help, and solve the problem in kJ

Answer:

Global winds are the main belts of wind that move in a particular direction across the earth

Answer:

Global winds are the main belts of wind that move in particular directions across the Earth.

Explanation:

All wind is caused by the uneven heating of Earth's surface, which sets convection currents in motion. Convection currents on a large scale cause global winds; convection currents on a small scale cause local winds.

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Answer:

Radiation

Explanation:

While being beside a campfire, the heat is transmitted by radiation from fire.  

Answer:

Silver bromide.

Explanation:

Answer:

Red cabbage juice contains a natural pH indicator that changes colors depending on the acidity of the solution. The pigment in red cabbage that causes the red color change is called flavin (an anthocyanin). ... At a lower pH, more hydrogen ions are in solution, and therefore the solution is acidic

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Answer: 1.2

Explanation:

Answer:

B. triglyceride

Explanation:

Answer:

triglyceride becauseit is a fatty acid

Answer:

Here is the word equation and balanced equation to this question.

Explanation:

Magnesium + hydrochloric acid ⇒ Magnesium Chloride + Hydrogen gas

Mg + 2HCl⇒ MgCl₂ + H₂

Answer:

1. Mg+Hcl--》Mgcl2 + H2

Answer:

Pb(C2H3O2)2 + KI ----> PbI2 + KC2H3O2

Explanation:

all the numbers are written as subscripts

An example which doesn't depict physical weathering is acid rain falling on limestone.

Physical weathering involves the breakdown of rock into smaller particles through physical processes such as friction between rocks as a result of wind blowing sand onto rocks, freeze-thaw in colder climates etc and it is usually reversible.

Chemical weathering on the other hand involves the  breakdown of rock into smaller particles through chemical processes or reaction  such as acid rain falling on limestone and it is usually irreversible.

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It explains the relationships between molecules of gases, liquids and solids.

gases, energy, temperature, phases.

Answer:

I didn't get you

Explanation:

Please explain

Answer:

Due to electrostatic force

Answer:

The major cause of continuous negative human treatment of our aquatic biomes include pollution and overfishing. It can however be slowed down by less dependence of aquatic animals for food in order to preserve the aquatic biomes.

Advocacy should be done also to sensitize people about the effects of pollution and overfishing in water bodies. Pushing for the enforcement of rules protecting the aquatic biomes from pollution should also be taken note of to improve the conditions of the biome.

Answer:

thermal energy

Explanation:

Answer:

Explanation:

because matter occupies space

Answer:

Matter is anything that has weight and occupies space

So examples of matter are

Desk, water, cloud, and helium.

Explanation:

Answer:

[tex]T_2=261.46\ K[/tex]

Explanation:

It is given that,

Original temperature, [tex]T_1=323^{\circ}C=596.15\ K[/tex]

Original volume, [tex]V_1=2.85\ L[/tex]

We need to find the temperature if the volume of the balloon to be shrink to 1.25 L.

According to Charles law, at constant pressure, [tex]V\propto T[/tex]

It would means, [tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}[/tex]

T₂ = ?

[tex]T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{1.25\times 596.15}{2.85}\\\\T_2=261.46\ K[/tex]

So, the new temperature is 261.46 K.

Answer:

b. 760 g

Explanation:

The mass of the solution = 800 g

5% of NaCl by mass of the solution can be determined as follows;

    5% of 800  =  [tex]\frac{5}{100}[/tex] × 800

                       = 5 × 8

                       = 40 g

The mass of NaCl in the solution is 40 g.

The mass of water = mass of solution - mass of NaCl

                               = 800 - 40

                              = 760 g

Therefore, the mass of water required is 760 g.

Answer:

60

Explanation:

its force x distance

Answer:

The atomic number

Explanation:

Answer:

neutralise

Explanation:

There is a special name given to the reaction between an acid and a base to form salt and water and water only. That name is 'neutralization'. Hence to 'neutralize' an acid connotes the idea of 'cancelling' the effect of an acid.

An acid has a number of deleterious effects on surfaces, the most prominent of which is corrosion of the surface due to oxidation. If a surface is accidentally exposed to an acid, the effect of that acid on the surface can be counteracted by the immediate application of a base to 'neutralize' the acid. Neutralization in this sense is akin to 'cancelling' out the acid.

The examples are endless. Another common example is the neutralization of an acidic soil by a base in order to 'cancel' the acidity of the soil and make the soil fertile for plant growth.

Answer:

here it is

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Answer:

The Lydia Bourouiba is recorded is around more than the 100 sneezes and coughs cases.

Explanation:

Lydia Bouroubia was a mathematical physicist who does experiments on sneezes and coughs. She was a leading expert in coughs and sneezes. Sneezing is a phenomenal activity that occurs in our body to excrete the dust particles and germs.

The disease also spread through it. Lydia thought that her research will help people related to their health. It will help in stopping epidemics in public. It is a type of outbreak of disease at a bigger level in the public.

Answer:

Antigens (more info below)

Explanation:

Antigens determine the blood type and may be either proteins or sugar molecule complexes (polysaccharides). Genes in the blood group antigen group provide instructions for the production of antigen proteins. Blood group antigen proteins serve a variety of functions within the red blood cell membrane.

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Answer:

0.192 N

Explanation:

Answer:

I just did it in ed

Explanation:

Answer:

It can lose it's electrion

Explanation:

Answer:

Evaporated via combustion.

Explanation:

The loss on ignition (LOI) and Ash content are inorganic analytical techniques used to determine the percentage by mass of hydrocarbon in compounds. This process allows volatile matter and possibly impurities found in a material to evaporate, leaving behind the true chemical constituents of the material.

The 10kg lost could be moisture content of the tree, or other volatile matter which has escaped on combustion of the tree.

Answer:

9

Explanation:

Answer:

b

Explanation:

Answer:

1. 2.1 moles of Mg

2. 0.72 mole of Mg(OH)2

Explanation:

1. We'll begin by writing the balanced equation for the reaction. This is given below:

3Mg + 2AlBr3 —> 3MgBr2 + 2Al

From the balanced equation above, 3 moles of Mg reacted to produce 2 moles of Al.

Therefore, Xmol of Mg will react to produce 1.4 moles of Al i.e

Xmol of Mg = (3 x 1.4)/2

Xmol of Mg = 2.1 moles.

Therefore, 2.1 moles of Mg is required to 1.4 moles of Al.

2. We'll begin by calculating the number of mole in 26g of water, H2O.

This is illustrated below:

Molar mass of H2O = (2x1) + 16 = 18g/mol

Mass of H2O = 26g

Number of mole of H2O =?

Mole = Mass /Molar Mass

Number of mole of H2O = 26/18

Number of mole of H2O = 1.44 moles

Next, we shall write the balanced equation for the reaction. This is given below:

2HNO3 + Mg(OH)2 —> Mg(NO3)2 + 2H2O

Finally, we can obtain the number of mole of Mg(OH)2 used in the reaction as follow:

From the balanced equation above,

1 mole of Mg(OH)2 reacted to produce 2 mole of H2O.

Therefore, Xmol of Mg(OH)2 will react to produce 1.44 moles of H2O i.e

Xmol of Mg(OH)2 = (1 x 1.44)/2

Xmol of Mg(OH)2 = 0.72 mole.

Therefore, 0.72 mole of Mg(OH)2 was used in the reaction.