What mineral is this? Irregularly shaped, white with nonmetallic luster, the hardness of 2.5, shows cubic cleavage and dissolves easily in water.

Answers

Answer 1

Answer:

Answer:

The material we are talking about would be serpentine.

Explanation:

This material is available in two colours green or white and it has a hardness that amounts to 2.5. This material has a luster that is nonmetallic and more of waxy in nature.

This feature becomes Satiny when Nature of is material is Fibrous. This material is used as an insulating material against electricity as well as heat. The property of this mineral is very close to asbestos and is used when prevention from heat and electricity is required.

Answer 2

Answer:

Answer:

Halite

Explanation:

Halite is the mineral which is called as Rock salt shows cubic cleavage

Halite forms clear transparent crystals with perfect cubic cleavage. Halite is Table salt, the salt is an array of small cubic fragments, the result of halite’s crystal structure and perfect cubic cleavage

Cubic cleavage can be produced by breaking the sample. Halite is one of the few common minerals that, when broken into small fragments, will readily dissolve in water.

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This metal is very reactive, has properties similar to magnesium, and is in the same period as bromine. What element is this?
What did Rutherford contribute to the model of the atom?A. The Proton B. The Neutron C. The Nucleus D. The Electron
Photosynthesis is a vital process for plants, animals and humans, and the environment? Give at least two examples of how plants, animals and humans, and the environment benefit from photosynthesis.
List some ways houses would be built differently if gravity were much stronger or weaker

Given the balanced equation representing reaction:N2 + energy ==> N + N
Which statement describes this reaction?
( I) Bonds are broken, and the reaction is endothermic.
(2) Bonds are broken , and the reaction is exothermic.
(3) Bonds are formed, and the reaction is endothermic.
(4) Bonds are formed, and the reaction is exothermic.

Answers

Answer: Option (1) is the correct answer.

Explanation:

In a $N_(2)$ molecule, the nitrogen atoms are bonded together by triple bond.

Therefore, in order to break this triple bond high heat or energy has to be provided.

Thus, the reaction $N_(2) + energy \rightarrow N + N$ shows that N triple bond N is broken down as energy is absorbed by $N_(2)$ molecule.

Hence, we can conclude that in the given reaction bonds are broken, and the reaction is endothermic.

( I) Bonds are broken, and the reaction is endothermic.
(2) Bonds are broken , and the reaction is exothermic.
(3) Bonds are formed, and the reaction is endothermic.
(4) Bonds are formed, and the reaction is exothermic.

Write a balanced equation for double replacement of KOH+ZnCl2

Answers

Answer :

Double replacement reaction : It is a type of reaction in which a positive cation and a negative anion of the reactants react to give a new compound as a product.

$AB+CD\rightarrow AD+CB$

In this, A and C are the cations and B and D are the anions.

When one mole of potassium hydroxide react with the one mole of zinc chloride to give one mole of zinc hydroxide and 2 moles of potassium chloride.

The balanced chemical reaction is,

$KOH+ZnCl_2\rightarrow Zn(OH)_2+2KCl$

What types of atoms are shown in a skeletal model of an organic molecule?A. Atoms of every element except carbon
B. Atoms of every element except hydrogen
C. Atoms of every element
D. Atoms of every element except carbon and hydrogen

Answers

Answer:

Atoms of every element are shown in a skeletal model of an organic molecule.

Explanation:

Skeletal model of an organic molecule consists of various skeletal atoms that are used in making up of the molecule. Various conventions of hydrogen and carbon atoms are employed in it. The molecules bonding and certain representation of molecular geometry are shown in the structural formula.

Use of skeletal formula is ubiquitous in organic chemistry. Thus, in organic chemistry atoms of every element are shown in the skeletal model of an organic molecule

Study the concentration amount shown on the juice label. Then answer the question. If you had 100 mL of juice, how many milliliters would be fruit juice?A.
25 mL
B.
2.5 mL

C.
75 mL

D.
250 mL

Answers

If the liquid is, say, 50% concentration, that means that, in this case, 50 milliliters would be a fruit juice, while the other 50% would be of other stuff. So look at the concentration marking. It will be a percentage that many milliliters will be of fruit juice--75%=75 milliliters, and so on, because there is an even 100mL of juice.

Under what conditions does the "NET FORCE" acting an object equal the sum of the individual forces?Net Force- Acting on an Object
Is my definition right?

Answers

Answer : When the forces are acting in the same direction of movement of the object it can be said as sum of the two individual forces will be equal to the "NET FORCE" .

Example : If two forces (2 kids pushing in the same direction to move the object big box) act on an object(big box) in the same direction, then the net force is equal to the sum of the two forces.

The net force on an object is equal to the sum of the individual forces
when the individual forces all act in the same direction.

We don't know your definition, so we can't tell whether it's right.

What does energy transformation mean

Answers

Energy transformation or energy conversion is the process of changing one form of energy to another form of energy. In physics, the term energy describes the capacity to produce certain changes within any system, without regard to limitations in transformation imposed.

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Help on question 1b please? (image attached)

Some land plants have evolved specialized vascular tissues that have allowed them to thrive on land. The developement of these structures was necessary becauseLand plants need to extract water from the ground and move it to the other structures of the plant. Land plants need to be tall and the vascular tissues are what provide rigidity to the plant’s cells. Land plants need to photosynthesize and the vascular tissues is where this process occurs. Land plants don’t really need these structures as they can absorb water from the air through their leaves.