All categories

3 years ago

19. Contrast mitochondria and chloroplasts. (4 points)

Chemistry

1 answer:

anyanavicka [17]3 years ago

3 0

Answer:

mitochondria are present in the cells of all types of aerobic organisms like plants and animals, whereas Chloroplast is present in green plants and some algae, protists like Euglena. Mitochondria is the colourless, bean shape organelles. Chloroplasts are green colour and disc shape organelles.

Explanation:

You might be interested in

Which of the following statements is false concerning the formula of a compound?

aalyn [17]

Answer:

B. The number of atoms in a molecular formula is always greater than the number of atoms in an empirical formula.

Explanation:

It is not always true that the number of atoms in a molecular formula is always greater than the number of atoms in an empirical formula.

The chemical formulae of a compound are of two main types;

The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio.
The molecular formula shows the actual ratio of the atoms in a compound.

Sometimes the number of atoms in the molecular and empirical formula can be the same.

Also, the number of atoms in the molecular formula is always greater than that of the empirical formula when they are not the same.

3 0

3 years ago

Which of the following compounds will not produce O2 gas when it decomposes? (2 points)

Umnica [9.8K]

LiOH is the right answer.

6 0

3 years ago

Select the answer that CANNOT be used to fill in the blank in the following sentence:

Mashcka [7]

Answer:

3. move more quickly

Explanation:

...................

6 0

3 years ago

Tetrachloromethane, CCl4 is produced from the substitution reaction between methane and chlorine gas. If the rate of formation o

Korolek [52]

The rate of disappearance of chlorine gas : 0.2 mol/dm³

<h3>Further explanation</h3>

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.

For reaction :

$\tt aA+bB\rightarrow cC+dD$

The rate reaction :

$\tt -\dfrac{1}{a}\dfrac{d[-A]}{dt}= -\dfrac{1}{b}\dfrac{d[-B]}{dt}=\dfrac{1}{c}\dfrac{d[C]}{dt}=\dfrac{1}{d}\dfrac{d[D]}{dt}$

Reaction for formation CCl₄ :

<em />

From equation, rate of reaction = rate of formation CCl₄ = 0.05 mol/dm³

Rate of formation of CCl₄ = reaction rate x coefficient of CCCl₄

0.05 mol/dm³ = reaction rate x 1⇒reaction rate = 0.05 mol/dm³

The rate of disappearance of chlorine gas (Cl₂) :

Rate of disappearance of Cl₂ = reaction rate x coefficient of Cl₂

Rate of disappearance of Cl₂ = 0.05 x 4 = 0.2 mol/dm³

4 0

3 years ago

Which is not a property of a pure substance

NeX [460]

Pure substances are substances<span> that are made of only one type of atom or molecule....</span>

3 0

3 years ago