Marbles are solid in nature, they can be used to form objects of any kind, this makes them suitable for Sam's claim, the marbles can be used to model a typical structure of a solid, even though it is can only be a prototype.

<h3>There are two main categories of solids:</h3>

Crystalline
Amorphous.

Crystalline solids are well ordered at the atomic level, and amorphous solids are disordered.

<h3>Types of crystalline solids</h3>

There are four types of crystalline solids: ionic solids, molecular solids, network covalent solids, and metallic solids

The constituents of a solid can be arranged in two general ways: they can form a regular repeating three-dimensional structure called a crystal lattice

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7 0

3 years ago

A hospital needs 40 L of a 10% solution of

Anuta_ua [19.1K]

Answer:

Step-by-step explanation:

i didnt exactly answer this but i found someone who did

(pasted) i still hope it helps

Let x and (40L-x) represent the 20% and 4% solutions respectively

Mixing the 20% and 1% to form 40L of 15% solution

.20x + .04(40L-x) = .15*40L

.16x = .11*40L

x = .11*40L/.16

x = 27.5L, the amount of the 20% solution.

12.5L,the amount of the 4% solution (40L - 27.5L)

CHECKING our Answer

.20*27.5L + .04*12.5L = 5.5L + .5L = 6L = .15*40L

Which tells us incidentally there is 6L of disinfectant in the final solution.

7 0

3 years ago

A prestigious investment bank designed a new security that pays a quarterly dividend of $3.70 in perpetuity. The first dividend

Andru [333]

Answer:

the price of the security will be $448.485

Step-by-step explanation:

Annual rate of interest = 3.3%

then Interest rate per quarter (r) will be = 0.033/4

= 0.00825

= 0.825%

now it is given that

Cash flows in the first quarter, C1 = $3.70

Then Present value of perpetuity = C1 /r

= $3.70/ 0.825%

= $448.485

Therefore, the price of the security will be $448.485

5 0

3 years ago