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lana [24]
3 years ago
14

A process with a negative change in enthalpy and a negative change in entropy will generally be: _________________

Chemistry
1 answer:
Mrac [35]3 years ago
4 0

Answer:

b

Explanation:

spontaneous above a certain temperature

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*SCIENCE*
ICE Princess25 [194]

C.  

Their radiation facilitates nuclear fusion in young stars.


7 0
3 years ago
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A radioactive nuclide that is used for geological dating has an atomic number of 19 and mass number 40. Which is the symbol of t
Alina [70]
The mass number goes on top, and the atomic number goes on bottom. 
Therefore, the answer is C:
40
     K
19

7 0
4 years ago
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A nugget of gold is placed in a graduated cylinder that contains 80 mL of water. The water level rises to 225 mL after the nugge
Marina CMI [18]

Answer:

<h2>145 mL</h2>

Explanation:

The volume of the nugget can be found by using the formula

volume of object = final volume of water - initial volume of water

From the question

final volume of water = 225 mL

initial volume = 80 mL

We have

volume = 225 - 80 = 145 mL

We have the final answer as

<h3>145 mL</h3>

Hope this helps you

8 0
3 years ago
HELP WITH THIS EASY SCIENCE WORK
Trava [24]

Answer:(1)The urinary system's function is to filter blood and create urine as a waste by-product.

(2) two kidneys we have.

(3)The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances.

(4)Two ureters. These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys.

(5)A hollow, muscular, balloon-shaped organ that expands as it fills with urine.

(6)The urethra is the vessel responsible for transporting urine from the bladder to an external opening in the perineum.

(7)Urine is formed in the kidneys through a filtration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, the urine is passed from the bladder through the urethra to the outside of the body.

Explanation:

8 0
3 years ago
(a) starting with solid sucrose, c12h22o11, describe how you would prepare 250 ml of a 0.250 m sucrose solution. (b) de- scribe
Anna007 [38]

a. We first calculate the moles of sucrose needed

moles sucrose = 0.250 M * 0.25 L

moles sucrose = 0.0625 mol

 

The molar mass of sucrose 342.3 g/mol, so the mass of sucrose needed is:

mass sucrose = 0.0625 mol * 342.3 g/mol

mass sucrose = 21.4 grams

 

So simply dissolved about 21.4 grams of sucrose in 250 mL solution.

 

b. We use the formula:

M1 V1 = M2 V2

1.50 M * V1 = 0.100 M * 0.350 L

V1 = 0.0233 L = 23.3 mL

 

So simply take 23.3 mL of solution from 1.50 M then dilute it with water until 350 mL to make 0.100 M.

5 0
4 years ago
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