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Anastaziya [24]
4 years ago
12

Two reasons why ideas of democritus were not useful

Chemistry
1 answer:
soldi70 [24.7K]4 years ago
7 0
1, they were wrong sometimes

2. people don't trust him
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The calvin cycle and the krebs are referred to as cycles of chemical reactions because they
Schach [20]

Answer:

The options are

a. occur inside organelles. b. start over continually. c. are part of the carbon cycle. d. allow energy to flow in ecosystems.

The answer is b. Start over continually

Explanation:

The two cycles involves a continuous process as long as the reactants are present under suitable conditions. The cycle happens all the time due to it being necessary to produce important products all the time for the body system.

A good example involves the existing Carbon dioxide and water reacting together to get converted into substance that could provide energy (ATP and NADH) such as Glucose.

8 0
3 years ago
A flask contains 0.100 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask.
irakobra [83]
Avagadros number is where 1 mol of any substance is made of 6.022 x 10²³ units. These units could be atoms making up an element of molecules making up a compound.
1 mol of Br₂ is made of 6.022 x 10²³ molecules of Br₂
the flask contains 0.100 mol
Therefore if 1 mol has 6.022 x 10²³ molecules of Br₂
then 0.1 mol has - 6.022 x 10²³ molecules/mol x 0.1 mol 
therefore number of molecules - 6.022 x 10²² Br₂ molecules ₂
8 0
4 years ago
Which would be the nobel gas preceding Tin?
Alexxandr [17]

Answer: The noble gas preceding tin is Krypton [Kr].

Explanation: Atomic Number of tin is 50 , Atomic Number of neon is 10, Atomic Number of argon is 18, Atomic Number of krypton is 36 and Atomic Number of xenon is 54.

Atomic number tells us the number of electrons present in the atom.

Thus the electronic configuration of tin according to increasing energy of orbitals is written as [Kr]4d^105s^25p^2.



6 0
3 years ago
Determine the molar solubility of pbso4 in pure water. ksp (pbso4) = 1.82 × 10-8.
OLga [1]
When PbSO₄ is added it dissociates as follows
PbSO₄ --> Pb²⁺ + SO₄²⁻
molar solubility is the number of moles of solute that can be dissolved in 1 L of solution 
if molar solubility of PbSO₄ is X, then molar solubility of Pb²⁺ is X and SO₄²⁻ is X
the formula for ksp is as follows 
ksp - solubility product constant
ksp = [Pb²⁺][SO₄²⁻]
ksp = X * X 
ksp = X²
ksp = 1.82 x 10⁻⁸ 
X² = 1.82 x 10⁻⁸ 
X = 1.35 x 10⁻⁴ M
molar solubility of PbSO₄ is 1.35 x 10⁻⁴ M
answer is b.
3 0
4 years ago
What kind of energy transformations occur when you hit a coconut with a hammer
hram777 [196]

Answer: I dont really know

Explanation:

3 0
3 years ago
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