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2 years ago

Cyanite (Al2SiO5), quartz (SiO2), and leucite (KAlSi2O6) may be grouped together because they all contain ?

1 answer:

6 0

The answer is silicon and oxygen. They may be grouped under the largest class of mineral known as silicates. They contain oxygen and silicon which are the two most abundant elements in the earth's crust and it is estimated that they comprise more than 90 percent of the earth's hard outer layer.

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Convert 49 lbs into grams

lukranit [14]

<h2>Answer:</h2><h3>22226.026 g</h3><h2>Explanation:</h2>

To get an approximate result, multiply the mass value by 454.

3 0

3 years ago

At a temperature of -33.0 degrees C, a sample of confined gas exerts a pressure of 53.3 kPa. If volume remains constant, at what

Rasek [7]

Answer: 598.9K = 325.9°C

Explanation:

P1= 53.3kPa T1= -33+273=240K

P2=133kPa , T2= ?

Applying P1/T1 = P2/T2

Substitute and Simplify

53.3/240 = 133/T2

T2= 598.9K = 325.9°C

4 0

2 years ago

Why is a solution not a pure substance?

Kaylis [27]

A solution is not a pure substance as it is a mixture between a solute and a solvent.

Pure substances are substances that are made up of only type of particles and have a fixed structure. In pure substances the matter cannot be separated into other kinds of matter by any physical means.

A homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to the liquid state of matter, but solutions of gases and solids are possible.

A solution cannot be a pure substance because it is made up of a homogenous mixture of solute and a solvent. Homogenous means the matter cannot be separated out and therefore a solution cannot be a pure substance.

To know more about pure substances

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5 0

1 year ago

What is an example of kinetic energy at work,1 a ball lodge in the tree, 1 a frisbee flaying in the air, 3 a car in the garage

AfilCa [17]

Answer:

a frisbee flaying in the air

Explanation:

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

$K.E = \frac{1}{2}MV^{2}$

Where;

K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.

Hence, an example of kinetic energy at work is a frisbee flaying in the air because it would possess energy due to its motion in the air.

8 0

2 years ago

A molecule of composition is replicated in a solution containing unlabeled (not radioactive) GTP, CTP, and TTP plus adenine nucl

Lapatulllka [165]

Answer:

Please find the complete question in the attached file.

Explanation:

It would only be radioactive if the DNA molecule that employed the poly-T rand as templates. Its other molecule of the daughter would not have been radioactive as it did not need dATP for its replication. While each strand of the second molecule includes t, simultaneous reproduction dATP from both daughter molecules is needed so that each of those is radioactive.

8 0

2 years ago