All categories

3 years ago

All igneous rocks have the same mineral compositions.

Chemistry

2 answers:

lawyer [7]3 years ago

7 0

here is some facts

Limestone is a sedimentary rock, whereas marble is metamorphic. These two rock types can be distinguished by their textures. ... 2- Gabbro and basalt are two igneous rocks having the same chemical composition, and the same minerals (plagioclase feldspar + pyroxene), but are of different origins.

Aleonysh [2.5K]3 years ago

4 0

Answer:

Explanation:

Igneous rocks are formed by crystallization or solidification of lava or magma. According to the mineralogical content Igneous rocks are Felsic (High silicon), Mafic (less silicon) and ultramafic (lowest silicon). Felsic includes Granite(intrusive) and Rhyolite(extrusive), Mafic includes Gabbro (intrusive) and Basalt(extrusive), Ultramafic includes Peridotite (Intrusive) and Komatite (extrusive). Only Gabbro and Basalt are having same mineral composition.

You might be interested in

Solutions of mercury (I) nitrate and potassium bromide are mixed

Afina-wow [57]

With that informatio you can:

1) Write the chemical equation
2) Balance the chemical equation
3) State the molar ratios
4) Predict if precipitation occurs.

I will do all four, for you:

1) Chemical equation:

mercury(I) nitrate potassium bromide mercury(I) bromide potassium nitrate
Hg2(NO3)2 + KBr → Hg2Br2 + KNO3

2) Balanced chemical equation

Hg2(NO3)2 + 2KBr → Hg2Br2 + 2KNO3

3) Molar ratios or proportions:

1 mol Hg2(NO3)2 : 2 mol KBr : 1 mol Hg2Br2 : 2 mol KNO3

4) Prediction of precipitation.

You can use the solubility rules or a table of solubilities. I found in a table of solutiblities that mercury(I) bromide is insoluble and potassium bromide is soluble, Then you can predict that the precipitation of mercury(I) bromide will occur.

7 0

3 years ago

Saponification is a chemical reaction _____. A. due to the presence of a strong organic acid. B. that results in an alcohol and

dezoksy [38]

Answer:

that results in an alcohol and a carboxylic acid.

Explanation:

Saponification is a chemical reaction process of alkaline hydrolysis of esters(R'COOR group) by which soap is obtained.

For Example, when a base such as sodium hydroxide [NaOH] is used to hydrolyze an ester, the products are a carboxylate salt and an alcohol. Because soaps are prepared by the alkaline hydrolysis of fats and oils.

In a saponification reaction, alkaline hydrolysis of fats and oils with sodium hydroxide yields propane-1,2,3-triol and the corresponding sodium salts of the component fatty acids.

i.e Fat or oil + caustic alkali ⇒ Soap + propane-1,2,3-triol

As a specific example, ethyl acetate and NaOH react to form sodium acetate and ethanol:

The reaction goes to completion in the image below:

8 0

3 years ago

What Percent of the moon is always in daylight?

wolverine [178]

Answer: 50%

Explanation:

The best we get from the moon is a full moon, which is just half of the moon shining from the earth while the other half is in complete darkness.

7 0

3 years ago

Determine whether HCl can dissolve each metal sample. If it can, write a balanced chemical reaction showing how the metal dissol

miss Akunina [59]

Answer:

Aluminium can dissolve in HCl

6HCl + 2Al ---> 2AlCl₃ + 3H₂

Minimum volume of HCl required is 76.9 mL.

Explanation:

When a metal dissolves in an acid, a chemical reaction takes place. The chemical reaction occuring is the displacement of the hydrogen ions present in the acid by the metallic ions formed when the metal dissolves in the acid. The displaced hydrogen ion accepts electrons frommthe metal and is evolved as hydrogen gas.

The ability of a metal to be dissolve in an acid with the resultant evolution of hydrogen gas is determined by the position of the metal in the electrochemical series. Metals which are above hydrogen in the electrochemical series are able to displace hydrogen from dilute acids and as such, dissolve in the acid. However, metals which are lower than hydrogen in the electrochemical series are not able to displace hydrogen from dilute acids and as such are not soluble in the acids.

Of the three metals, aluminium, Al, copper, Cu, and silver, Ag, only aluminium is higher than hydrogen in the electrochemical series and as such can dissolve in the 3.25 M HCl.

The equation of the reaction is given below:

6HCl + 2Al ---> 2AlCl₃ + 3H₂

Molar mass of Al = 27 g; Mass of Al reacting = 2.25 g

Number of moles = mass/molar mass

Number of moles of Al present in 2.25 g = 2.25/27 = 0.083 moles

From the equation of reaction, 6 moles of HCL are required to react with 2 moles of Al.

Number of moles of HCl required to react with 0.083 moles of Al = 0.083 × 6/2 = 0.25 moles of HCl

From the formula, molarity = number of moles / volume; volume = number of moles / molarity

Molarity of HCl = 3.25 M; number of molesnof HCl = 0.25 moles

Volume = 0.25 / 3.25 = 0.0769 L or 76.9 mL

Therefore, minimum volume of HCl required is 76.9 mL.

3 0

3 years ago

What areas did japan invade in 1931 and 1937

Yanka [14]

Answer:

china

Explanation:

3 0

3 years ago