Chemistry High School

1. What is the mitochondra in a cell? What is its primary funtion?

Answers

Answer 1

The mitochondria is full of energy. It’s primary function is to generate large quantities of ATP.

Answer 2

Answer:

Its the powerhouse of the cell.

Explanation:

It breaks down food into energy.

I hope this helps. :3

Related Questions

A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to

Answers

To solve this we must be knowing each and every concept related to experiment. Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.

What is experiment?

Any procedure where measurements are taken and tests are run to support or disprove a hypothesis is referred to as a scientific experiment.

A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to leave the room and go to an area with fresh air.

Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.

To learn more about experiment, here:

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How is this model useful?
O It shows how electrons are distributed in the shells of an iron atom.
O It shows how electrons are distributed in the shells of a cobalt atom.
o It shows how orbitals are distributed in the shells of an iron atom.
It shows how orbitals are distributed in the shells of a cobalt atom.

Answers

Answer:

A) It shows how electrons are distributed in the Shells of an Iron atom.

Explanation: Took the test on Edge

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option A.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. The given model shows how electrons are distributed in the shells of an iron atom.

Therefore, the correct option is option A.

To know more about atom, here:

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A 5.32 g mixture contains both lithium fluoride, LiF, and potassium fluoride, KF. If the mixture contains 3.12 g fluorine, what is the mass of the KF in the mixture? mass of KF = _______ g Please only answer if you're going to answer seriously

Answers

Answer:

The mass of KF in the mixture is 2.77 gms.

Explanation:

Given;

Total weight of mixture (LiF+KF)=5.32gms

Let, mass of KF in the mixture = x gms

⟹ mass of LiF in mixture =(5.32-x)gms.

We know that :

Atomic weight of F=19gms.

Atomic weight of Li =7gms.

Atomic weight of K = 39 gms.

moles=mass/(molecular weight)

Thus, moles of KF=x/58

and moles of LiF = (5.97-x)/26LiF=(5.97−x)/26

Thus,

moles of F in KF=moles of KF=x/58 ---(1)

moles of F in LiF =moles of LiF= (5.32-x)/26---(2)

From (1) & (2),

Total moles of Fluorine

=(x/58)+((5.32-x)/26)

Hence,

total weight of Fluorine in sample = moles*Atomic weight

=((x/58)+((5.32-x)/26))*19gms.

=3.12 gms.---(given)

Now, solving the equation for x,

26x +(5.32*58)-58x

=3.12*58*26/19

22x=308.56-247.62

x=60.94/22

=2.77 gms. (Answer)

Thus, the mass of KF in the mixture is 2.77 gms.

round 0.000789 to 2 significant figures

Answers

Answer:

0.00079

Explanation:

Any zero after the decimal isn’t a significant figure

3. SE7.12D The cell organelle responsible for providing energy for cell processes in plant
and animal cells is the -

Answers

It is the mitochondria. Mitochondria are the power house of the cell and provide the cell with energy. Both plant and animal cells have mitochondria.

11. The respiration rate of a goldfish is
measured. The goldfish is then placed in
cold water and the respiration rate is
measured again.

Answers

Answer:

the respiration rate is the independent varaible ,measured is the indpendent variable i think

Explanation:

1. How many miles are in 1,000,000 centimeters?

Answers

Answer:

6 miles.

Explanation:

There is a lot of decimal points after it. But you just need to convert everything. But if you round it to the nearest whole, it would be 6 miles.

Answer:

Ex1,000,000 Centimeters =

6.2137119 Miles

planation:

A coyote and an oak tree both have DNA?

Answers

Answer:

true, they both have different types of DNA.

Answer:

Um yes... they have different DNA's.. ;-;

Explanation:

a 20.0g sample of an element contains 2.16x10^23 atoms identify the element

Answers

Answer:

yes

Explanation:

Which of the following substances is used up during photosynthesis?

Answers

Carbon dioxide,water are used to make a sugar called glucose

Material of density of 762 kg/m3 occupies a container
volume of 99 cm3. What is its mass?
Hint: density = mass/volume

Answers

Answer:

The answer is

0.075 kg

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

density = 762 kg/m³

We must first convert the volume from cm³ to m³

[tex]1 \: {cm}^{3} = 1 \times {10}^{ - 6} {m}^{3} [/tex]

So 99 cm³ will be

[tex]9.9 \times {10 }^{ - 5} \: \: {m}^{3} [/tex]

So the mass of the material is

[tex]mass = 762 \times 9.9 \times {10}^{ - 5} \\ = 0.075438[/tex]

We have the final answer as

0.075 kg

Hope this helps you

Answer:

75438 kg

Explanation:

In which chemical equation is the number of atoms in the reactants the same as the number of atoms in the products? A.Zn + 2HCl → H2 + ZnCl2 B.Li2CO3 → LiO + CO2 C. CO2 + H2O → CH2OH + O2 D. CH4 + O2 → CO2 + 2H2O

Answers

Answer:

Explanation:

The chemical equation in which the number of atoms in the reactants is the same as that of products would be Zn + 2HCl → H2 + ZnCl2. The correct option would be A.

Let us consider all the component atoms in the equation: Zn + 2HCl → H2 + ZnCl2

Zn: 1 atom in the reactant side and 1 atom in product sideH: 2 atoms in reactant side and 2 in product sideCl2: 2 atoms in reactant side and 2 in product side.

In Li2CO3 → LiO + CO2:

2 atoms of Li are in reactant side and only 1 in product side

In CO2 + H2O → CH2OH + O2

2 atoms of H are in reactant side while 3 are in product side

In CH4 + O2 → CO2 + 2H2O

Only 2 atoms of O are in reactant side while 4 are in product side.

Hence, the only equation in which the number of atoms in the reactants is the same as that of products is Zn + 2HCl → H2 + ZnCl2

More on balancing chemical equations can be found here: https://brainly.com/question/21049751

3. The dry air in the Alps helped to prevent damage to the cells in the Iceman's body.
(1 Point)
true
false

is this true or false ?

Answers

Answer:

False

Explanation:

because they do not prevent damage they make damage

Which element is in Group 17 and has more than 50 protons but less than 75 protons?

Answers

Answer:

Iodine

Explanation:

Iodine is in group 17 on the periodic table (first picture attached). The second picture shows you in the top left-hand corner of Iodine's little square, there is the number 53. This is the atomic number, it is also the number of protons and electrons in an element.

Hope this helped :)

If there are three naturally occurring isotopes of the hypothetical element R. The R-64 isotope has a 48.89% abundance and mass of 63.929 amu. The R-65 isotope has a 27.81% abundance and mass of 65.996 amu. The R-67 isotope has a 23.30% abundance and mass of 67.002 amu. Calculate the average atomic mass of the hypothetical element R.

Answers

Answer:

65.21g

Explanation:

[tex](48.89 \div 100) \times 63.929 = 31.25 \\ (27.81 \div 100) \times 65.996 = 18.35 \\ (23.3 \div 100) \times 67.002 = 15.61 \\ 31.25 + 18.35 + 15.61 = 65.21[/tex]

What is 9872002 in scientific notation?

Answers

Answer:

= 9.872002 × 10^6

Explanation:

Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. The resulting decimal number is a.

Count how many places you moved the decimal point. This number is b.

If you moved the decimal to the left b is positive.

If you moved the decimal to the right b is negative.

If you did not need to move the decimal b = 0.

Write your scientific notation number as a x 10^b and read it as "a times 10 to the power of b."

Remove trailing 0's only if they were originally to the left of the decimal point.

9.872002x10 to the power of 6!
hope that helps

2. Magnesium is an alkaline earth metal. With which group of elements is magnesium most reactive?
F. nonmetals
G. noble gases
H. alkali metals
J. transition metals

Answers

Answer:

alkali metals

Explanation:

alkali metals

The alkali metals, found in group 1 of the periodic table (formerly known as group IA), are very reactive metals that do not occur freely in nature. These metals have only one electron in their outer shell. Therefore, they are ready to lose that one electron in ionic bonding with other elements.

plz mark me as brainliest

The previous answer is right in the sense that in general alkali metals are the most reactive but the question is asking which one would MAGNESIUM specifically be the most reactive with. Metals and non metals are very reactive together and form ionic bonds. This is because all elements are trying to have a full outer shell so they will switch electrons. Noble gases will not react because they have a full valence shell. The closer a group is to having a full shell the more reactive they are. This is why halogens (7 valence electrons) and alkali metals (1) are so reactive. Alkaline earth metals have 2 so they will react most easily with the oxygen family because it has 6.

Basically the answer is F

The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these substances will solidify before the temperature reaches 0°C?

Answers

Answer:

Benzene

Explanation:

it's freezing point is 5.5 C which is greater than 0 C

Given a thin sheet of tin foil as shown below, determine the thickness of the foil if the mass is 1.68 g and the density of tin is 7.31 g/cm^3. Show all of your work. Round your final answer to two digits and don't forget units. (4 points) *PLEASE HURRY*

Answers

Given :

Mass of foil , m = 1.68 g .

Density of foil , [tex]\rho=7.31\ g/cm^3[/tex] .

To Find :

The thickness of the foil .

Solution :

Let , length and breadth is l and b respectively .

Also , height be h .

Volume is given by :

[tex]V=l\times b\times h[/tex]

Density is given by :

[tex]\rho=\dfrac{m}{V}\\\\V=\dfrac{m}{\rho}\\\\l\times b\times h=\dfrac{1.68}{7.31}\\\\l\times b\times h=0.23\\\\h=\dfrac{0.23}{lb}[/tex]

Therefore , thickness of the foil is [tex]\dfrac{0.23}{lb}[/tex] .

Hence , this is the required solution .

use the law of conservation of mass to complete this reaction. Na+Cl2

Answers

Answer:

sulfur, selenium, and oxygen.

Explanation:

I got it right on my test

1. 30 kg =___g

Idk how to do this pls help

Answers

Answer:

30000

Explanation:

all you have to do is multiply by 1000

30,000 ! you multiply kilograms by 1000 to get grams, or you would divide the grams by 1000 to get kilograms.

Calculate the following using the correct significant digits: 3.10 x 4.520

Answers

Answer:

Explanation:

2+2=6

Answer:

3.10 × 4.520 = 14.0

Explanation:

Sig Figs

Decimals

Scientific Notation

1.40 × 10'

which heat source would keep the pizza the warmest.

Answers

Answer:

a lot of heat source

Explanation:

1.) How do plants get their energy?

Answers

Answer:

Sun, water, caron dioxide.

Explanation:

They get there energy from those because photosynthesis the sun gives them that energy but the sun goes with water too because the sun and the water help it eat and produce its food and then the carbon is for it to breathe and thats how we have oxygen because the plants take in carbon and then they give out oxygen so thats why we need plants and plants need us.

Can i be brainliest.

the precautions that must be taken when carrying out experiments with hydrogen gas

Answers

Explanation:

Never smoke near a place where hydrogen is generated or being used. Remove all possible sources of flame and sparks. Hydrogen should only be generated and used in a well ventilated out door area. Precautions must be taken to remove all possibilities of fire or explosion.

In Rutherford's experiment, when particles strike the
zinc sulfide screen, they produce flashes of light or
scintillations which can be detected.

A-Gamma
b -Meson
C-Beta
d Alpha

Answers

Answer: D- Alpha

Explanation:

According to Dalton’s atomic theory, atoms:
A.are destroyed in chemical reactions.

B.can be divided.

C.of each element are identical in size, mass, and other properties.

D.of different elements cannot combine

Answers

Answer:

Explanation:

Dalton's atomic theory are: Everything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass.

Dalton's atomic theory opines that atoms of the same element are identical in size, mass, and other properties and are different from atoms of other elements.

In addition, Dalton theorized that atoms can neither be created nor destroyed, and they are the smallest indivisible particle of elements.

He also proposed that atoms of different elements are also able to combine in whole number ratio to form compounds.

More on Dalton's atomic theory can be found here: https://brainly.com/question/13157325?referrer=searchResults

What are intermolecular forces?

Answers

Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.

name physical properties

Answers

Answer:

Some examples of physical properties are:

color (intensive)

density (intensive)

volume (extensive)

mass (extensive)

boiling point (intensive): the temperature at which a substance boils.

melting point (intensive): the temperature at which a substance melts.

Explanation:

Hope this helped! <3

20. Convert: 7.7 mm
km.
a. 7.7 x 10-6
b.7.7 x 10-3
c. 7.7 x 103
d. 7.7 x 106
e. 7.7 x 102

Answers

The answer is 7.7 x10-6

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