Ask question

Ask question

All categories

Nookie1986 [14]

3 years ago

14

What is the Democratus

1 answer:

Anna [14]3 years ago

8 0

Answer:

Democritus was an Ancient Greek pre-Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe. Democritus was born in Abdera, Thrace, around 460 BC, although there are disagreements about the exact

Explanation:

You might be interested in

When 2.5 grams react, the will produce how many grams of reactant in a complete chemical reaction?

const2013 [10]

Answer:

2.5g

Explanation:

When the reaction goes into completion, they will produce 2.5g. This is complement the law of conservation of mass.

According to the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but transformed from one form to another".

The mass of reactants and products in a chemical reaction must be the same.
There is no change in mass in moving from reactant to product
So, if we start with 2.5g of reactants, we must end with 2.5g of products.

5 0

3 years ago

An atom of aluminum in the ground state and an atom of gallium in the ground state have the same

Kobotan [32]

(4) total number of valence electrons, because they exist in the same group.

3 0

3 years ago

2. A solution is made by dissolving 3.88 g of NaCl in enough water to make 67.8 mL of solution. What is the concentration of sod

Sauron [17]

Answer:

is 23

Explanation:

i got it rigjt .......

3 0

2 years ago

onsider the reaction, NO2(g) + CO(g) → NO(g) + CO2(g), for which the rate law has been determined to be: Rate = k[NO2]2[CO]. Whi

nlexa [21]

Answer:

The correct answer is option D.

Explanation:

Rate of the reaction is a change in the concentration of any one of the reactant or product per unit time.

$NO_2(g) + CO(g)\rightarrow NO(g) + CO_2(g)$

Rate of the reaction:

$R=-\frac{1}{1}\times \frac{d[NO_2]}{dt}=-\frac{1}{1}\times \frac{d[CO]}{dt}$

Rate of decrease in nitrogen dioxide concentration is equal to the rate of decrease in carbon monoxide.

Given rate expression of the reaction:

$R = k[NO2]^2[CO]$

Rate of the reaction on doubling concentration of nitrogen dioxide and carbon monoxide : R'

$R'=k(2\times [NO_2])^2(2\times [CO])=8\times k[NO2]^2[CO]=8R$

Doubling the concentrations of nitrogen dioxide and carbon monoxide simultaneously will increase the rate of the reaction by a factor of eight.

Hence, none of the given statements are true.

6 0

3 years ago

Read 2 more answers

Nickel + oxygen = nickel oxide. What is the balanced redox reaction?

uranmaximum [27]

Answer:

This is an oxidation-reduction (redox) reaction:

2 Ni0 - 4 e- → 2 NiII

(oxidation)

2 O0 + 4 e- → 2 O-II

(reduction)

Ni is a reducing agent, O2 is an oxidizing agent.

7 0

3 years ago