CHEMISTRY HIGH SCHOOL

What hormone promotes active tubular secretion of potassium ions into, along with sodium absorption from, filtrate in the distal convoluted tubule (dct) and collecting ducts?

Answers

Answer 1
Answer: The hormone that promotes active tubular secretion of potassium ions into, along with sodium absorption from filtrate in the distal convoluted tubule and collecting duct is Aldosterone. This hormone is produced by the adrenal gland and acts mainly in the functional unit of the kidney to aid in the conservation of sodium, secretion of potassium, water retention and to stabilize blood pressure. It indirectly regulates blood levels of electrolytes and helps to maintain the blood pH.

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Who discovered the electron?

The element mercury was first discovered on the Sun.
a. True
b. False

Answers

This statement is FALSE. Mercury was not first discovered in the sun. In fact, mercury or quicksilver was discovered by ancient Indians and Chinese even before 2000 BC. Its ores that are called cinnabar are used in traditional Chinese medicines. However, the effectiveness is not yet justified because of the toxicity of the element. Mercury is also used with thermometers both in clinical and lab uses. Nowadays, the use of it in thermometers is gradually disappearing because of its harmful properties.  

The unit of measure "mL" describes what property of a substance

Answers

It describes the property of a liquid.
i think its volume.......              

The smallest group of particles in a crystal that retains the shape of the crystal is called theA.cube
B.unit cell
C.cage
D.crystal lattice

Answers

Answer:

The correct answer is B.unit cell

Explanation:

An unit cell is an arrangement of particles (atoms, ions or molecules) in a crystal structure. The repetition of the unit cell reproduces the complete crystalline structure of the solid. Depending on how are located the particles, there are different unit cells, for exaple: simple cubic, body-centered cubic, face-centered cubic.

The answer is B. Unit cell.
Hoped I Helped!

What element was used to make the first atomic bomb

Answers

The element was uranium, it was made during World War II ( the first atomic bomb was dropped on Japan, Hiroshima )
For more information, a H-bomb ( Hydrogen bomb ) is more explosive ( the sun is made mostly by Hydrogen ) and North Korea declared that they just have one. 

A student is trying to classify an unidentified, solid gray material as a metal or a non metal. which question will best help the student classify the material?F. Is the material malleable or ductile?
G. Does the material feel hard to the touch?
H. Will the material float in water?
J. Does the material feel rough or smooth?

Answers

Answer:

i think the answer is f as metals are malleable and ductile

Answer:

F

Explanation: Most metals carry the trait that they are malleable and ductile.

How many molecules are in 2.6 grams H4C

Answers

Molar mass of H4C = 1 * 4 + 12 = 16 g/mol

Number of moles:

n = m / mm

n = 2.6 / 16

n = 0.1625 moles

Number of molecules:

number of moles * 6.02x10²³

0.1625 * 6.02x10²³

= 9.78x10²² molecules

hope this helps!
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