Please answer this question for me!

Answer:

Iron

Explanation:

The continental crust is less dense than oceanic crust because it contains less amount of iron.

The continental crust is predominantly rich in alumino-silicates.

Explanation:

two moles sodium (45.98 g), one mole sulfur (32.06 g), and four moles oxygen (64.00 g) combine to form one mole of sodium sulfate (142.04 g).

Answer:

pushing rubber mats together to predict the behavior of plate tectonics

Explanation:

pushing rubber mats together to predict the behavior of plate tectonics is an example of direct observation because direct observation involves the process of using your senses and evaluating or observing closely the subject matter in other to gather informations. Through direct observations you can gather informations through activities, behaviors without depending on people's opinions to gather information needed.

Answer:

B2 French I hope I'm right

Answer:

English

Explanation:

I mean u typing in English lol

Answer:

How light is reflected from the surface of the mineral.

Explanation:

To know the the correct answer to the question, we must bear in mind the meaning of luster.

Luster simply means the shining properties of a substance when light ray fall on them.

Thus, considering the question and the options given above, luster simply indicates how light is reflected from the surface of the mineral.

Answer:

d

Explanation:

Answer:

Formation of precipitate?

Explanation: When you do that the thingy dissolves the thingy so the thingy dissolves into nothingness of the nothing...

Answer:

c. H20 (L) ->H20 (S)

Explanation:

its just water freezing lol

pls vote brainliest tho ❤❤

Answer:

- to produce energy without using fossil fuels instead using renewable sources solar and wind power.

- reduce the amount of sulfur dioxide released from coal-burning power plants. One option is to use coal that contains less sulfur.

- install equipment called scrubbers, which remove the sulfur dioxide from gases leaving the smokestack.

- While one car alone does not produce much pollution, all the cars on the road added together create lots of pollution. Therefore, car manufacturers are required to reduce the amount of nitrogen oxides and other pollutants released by new cars. One type of technology used in cars is called a catalytic converter. This piece of equipment has been used for over 20 years to reduce the amount of nitrogen oxides released by cars.

- recycling is one way that is often use less energy than producing a new products from raw materials so the use of energy that obtain mainly from fossil fuel will be reduced and that reduced the emissions of toxic gases.

Decreasing the amount of sulphur dioxide power plants that burn coal emit and Using less sulfuric coal is one option to reduce acid rain.

Acid rain, also known as acid precipitation and acid deposition, is a type of precipitation with a pH of 5.2 or below that results from the release of nitrogen oxides and sulphur dioxide (SO2) from human activities, primarily the burning of fossil fuels. Acid deposition can impair biodiversity and lower the pH for surface waters in acid-sensitive areas.

To reduce acid Rain following steps can be taken: Generate energy using renewable resources like solar and wind energy rather than fossil fuels. Decrease the amount of sulphur dioxide power plants that burn coal emit. Using less sulfuric coal is one option. Install machinery known as scrubbers to take sulphur dioxide out of smokestack gas emissions. New automobiles must emit fewer nitrogen oxides as well as other pollutants, according to regulations for automakers. One method that frequently uses less energy than creating new items from basic materials is recycling.

Therefore, decreasing the amount of sulphur dioxide power plants that burn coal emit and Using less sulfuric coal is one option to reduce acid rain.

To know more about acid rain, here:

https://brainly.com/question/22143130

#SPJ3

Answer:

b I my current pls let me known

Answer:

When light hits CRY2, it changes shape and binds to its natural partner protein, known as CIB1. When light shines on the cells, the CRY2 protein binds to CIB1, which is floating in the cell. CIB1 brings along a gene activator, which initiates transcription, or the copying of DNA into mRNA.

Explanation:

Answer:

conductivity in solid state/ in water

Explanation:

conducitvity in water state would be least helpful when trying to determine the bond type that has the strongest intermolecule force, becuase they (salt and water) both would dissolve in water the same.

The property that will be least helpful in the determination of the bond type that has the strongest intermolecular forces is C. Conductivity in water.

It should be noted that the students wanted to investigate whether ionic or covalent bonds have stronger intermolecular forces.

In order to carry out the investigation, salt, sugar, and molar balls are used. Based on this, the property that is required for the investigation will be flammability, solubility in water, and the melting point.

The conductivity in water isn't required.

Read related link on:

https://brainly.com/question/18426918

Answer: The specific heat is the amount of heat per unit mass that is essential for raising the temperature of heat by one degree Celsius. Equation is the symbolic reaction of a chemical reaction in the form of symbols and formulas, where the reactant is written on the left side and the product is written on the right side.

We encounter a lot of things in our daily life that we love and also hate. What I have faced a lot is my nail tags that happens to me a lot and hurts too. And I love dipping biscuits in tea and that never happens at once because a single biscuit is too big for the cup. Hence, I have to break it and dip. Ugh

a. 0.5 mol

b. 25 cm³

c. (i) 75 cm³

(ii) 50 cm³

Avogadro's hypothesis:  

In the same T,P and V, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  

 [tex]\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}[/tex]

Reaction

2NO(g)+O₂(g)⇒2NO₂(g)

a. mol O₂

[tex]\tt mol~O_2=\dfrac{1}{2}\times 1~mol~NO=0.5[/tex]

b. volume of  O₂

[tex]\tt \dfrac{50}{1}=\dfrac{V_2}{0.5}\rightarrow V_2=25[/tex]

c. (i)total volume

[tex]\tt volume~NO+volume~O_2=50+25=75~cm^3[/tex]

(ii)volume of NO₂

[tex]\tt mol~NO_2=mol~NO=1\rightarrow V~NO=V~NO_2=50~cm^3[/tex]

Explanation:

c dormancy :)))))))))))

Answer:

Boron

Explanation:

First, locate the metalloids on the periodic table. (First picture) The metalloids are in the yellow section. Next, remember that the group your element is in determines its valence electrons. For example, group 17/7A has 7 valence electrons. Look at the group numbers above each column on the periodic table to find out which metalloid is the answer. In this case, we need to look at 13/3A since we know that this metalloid has three valence electrons. Not all  periodic tables will be labeled with the 3A part, so remember that groups 13 and over have the amount of valence electrons after you take out the one in front. For example, group 16 has 6 valence electrons because I removed the one in front of it. Now your options should be limited down to boron because we know that it is in the yellow section in group 13.

Answer:

the answer is boron

Explanation:

got it right on edge

Answer:

A.

Explanation:

Particles in gas move very fast and quickly while particles in liquids are slow and closer together.

Answer:

a element and compounds

Answer:

The answer is D) compounds and pure substances.

Explanation:

Here's why: All three items are examples of compounds and pure substances. They are not pure elements or molecules.

Answer: neritic zone

Answer:neretic zone

Explanation:

Answer:

Less than 22 grams because some mass is lost in the reaction

Explanation:

Took the test on K12

Answer:

It refers to the conventional sense of the elastic current

Explanation:

It is the traditional or the conventional sense of the elastic current as in the earlier days the experimenters and the scientist thought that the current moves out of the positive terminal or pole of the battery and enters through the negative pole or terminal of the battery.

It is because of the direction of the current flow as thought in early days, the sentence refers to the conventional sense.

Answer: 15990 J (or something close to that if its multiple choice)

Explanation: So I did the math with my friend and I just took a test on this and I got it right soooo,

you take 75 (your mass) and multiply it by 4.18 (the heat capacity of a liquid) and then times that answer by 51 which is the temperature from subtracting your initial heat (25.0 C) to your ending heat (76.0 C) and all that together is 15988.5. With the significant figures included, my test answer was somewhere around 15990 J (sorry if it's not specific)

Hope this helps, I'm pretty clueless on these equations lol.

Answer:

Cr04^2-

Explanation:

Answer:

Acceleration

Explanation: Force is how much one thing is being applied so it is not that and inertia is something sitting still so therefore using process of elimination, it is acceleration.

Answer: B. Acceleration

Explanation:

Answer:

241

Explanation:

all the numbers are significant but since you only need three it's only the first three numbers