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3 years ago

Which of the following statements about cell organelles is NOT true?

Chemistry

1 answer:

larisa [96]3 years ago

5 0

B , because some organelles located in plant cells are not present in the animal cell

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Calculate the mass of

mixas84 [53]

The mass of CO = 112 g

<h3>Further explanation </h3>

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³ particles

Moles can also be determined from the amount of substance mass and its molar mass

number of atoms in 88 g CO₂ :

$\tt mass~O=\dfrac{2.16}{44}\times 88\\\\mol~O=\dfrac{mass~O}{Ar~O}=\dfrac{2.16.88}{44.16}=4\\\\number~of~atoms=4\times 6.02\times 10^{23}$

number of atoms in CO :

$\tt mass~O=\dfrac{16}{28}\times mass~CO$

$\tt mol~O=\dfrac{mass~O}{Ar~O}=\dfrac{16.mass~CO}{28.16}=\dfrac{mass~CO}{28}$

$\tt number~of~atoms=\dfrac{mass~CO}{28}\times 6.02\times 10^{23}$

number of atoms in CO₂ = number of atoms in CO :

$\tt 4\times 6.02\times 10^{23}=\dfrac{mass~CO}{28}\times 6.02\times 10^{23}\\\\4=\dfrac{mass~CO}{28}\\\\mass~CO=112~g$

6 0

3 years ago

What are the charge and mass of the three subatomic particles

Mama L [17]

HEY DEAR..

CHARGE AND MASS OF THE THREE SUBATOMIC PARTICLES.

<h3>1》Electron</h3>

(-) charge

1/1840 times of mass of hydrogen.

<h3>2》proton</h3>

(+) charge

mass is 1.607×10^-27

<h3>3》Nutron</h3>

it has no charge.

it mass is equal to the mass of proton.

HOPE ITS HELPFULL

8 0

3 years ago

How many molecules are in 3.40L of H2O vapor at STP?*

DochEvi [55]

Answer:

9.14 x 10^22 molecules

Explanation:

8 0

2 years ago

Which of the following are chemicals? clothing food fuels all of the above

Mamont248 [21]

Answer:

i guess fuels are chemicals

6 0

3 years ago

A Geiger counter is used to measure

Fantom [35]

It detects ionizing radiation such as alpha particles, beta particles and gamma raysusing the ionization effect produced in a Geiger–Müller tube; which gives its name to the instrument.

7 0

3 years ago