Answers
Answer:
The three parts of the cell theory are as follows: (1) All living things are made up of cells, (2) Cells are the smallest units (or most basic building blocks) of life, and (3) All cells come from preexisting cells through the process of cell division. ... Today, the cell theory is considered the foundation of biology.
Explanation:
hope this help.. brainliest???
Answer:
i wanna give brailiest to the person at the top!
Explanation:
Related Questions
In the following reaction, how many grams of H2O are produced if 2.00 g of N2H4 react? N2H4 + 3 O2 ---> 2NO2 + 2H2O
Answers
Answer:
2
Explanation:
From this equation, 2 grams are produced.
The mass of H₂O produced from the reaction is 2.25 g
We'll begin by calculating the mass of N₂H₄ that reacted and the mass of H₂O produced from the balanced equation.
N₂H₄ + 3O₂ —> 2NO₂ + 2H₂O
Molar mass of N₂H₄ = (2×14) +(4×1) = 32 g/mol
Mass of N₂H₄ from the balanced equation = 1 × 32 = 32 g
Molar mass of H₂O = (2×1) + 16 = 18 g/mol
Mass of H₂O from the balanced equation = 2 × 18 = 36 g
SUMMARY
From the balanced equation above,
32 g of N₂H₄ reacted to produce 36 g of H₂O.
Finally, we shall determine the mass of H₂O produced by the reaction of 2 g of N₂H₄From the balanced equation above,
, 32 g of N₂H₄ reacted to produce 36 g of H₂O.
Therefore,
2 g of N₂H₄ will react to produce = (2 × 36) / 32 = 2.25 g of H₂O
Thus, the mass of H₂O produced from the reaction is 2.25 g
Learn more: https://brainly.com/question/13403073
Atoms that gain
an electrons
have a _____
Charge?
Answers
Answer:
positive
Explanation:
How do the products of chemical reactions compare to their reactants?
Question 5 options:
The products often have completely different properties than the reactants.
The products usually weigh more than the reactants.
The products usually have more atoms than the reactants.
The products are usually more toxic than the reactants.
Answers
Answer: The products usually weigh more than the reactants.
Explanation:
Answer:
A
Explanation:
i just took the k12 test
There is free rotation about the carbons of ethane but not th
of ethane. This is due to the fact that
A. the carbons in ethane are round
Balkenes do not rotate
C. the carbons in ethane are linked by double bonds
D. the carbon in ethane are smaller than those of ethane
Answers
Answer:
C. the carbons in ethene are linked by double bonds
Explanation:
The reason for the lack of free rotation about the carbons of ethene is that they are linked with with double bonds.
In single bonds afforded with the ethane compound, there is free rotation.
The double bonds confer a special restriction on the rotational potential of the bonded atoms round the carbon.
A solid is composed entirely of xenon atoms. What type of solid is it?
a) ionic
b) metallic
c) covalent network
d) atomic
e) molecular
f) amorphous
Answers
Answer:
ionic
Explanation:
xenom atoms are too large to move in the crystals without first associating with two oxygen ion vacancies and one uranium ion vacancy
Based on the figure below, what do the elements of a group (family) have
in common
Answers
Answer:
Explanation:
Send figure below
.Which statement about transition elements is correct?A Their soluble salts usually form coloured aqueous solutions. B They are all in the same group of the Periodic Table. C They are non-metals with high melting points. D They can be mixed together to form compounds
Answers
Answer:
A Their soluble salts usually form coloured aqueous solutions
Convert 62.5 L to mm
3
Answers
Answer:
0.0625
Explanation:
Answer:
62,500
Explanation:
Are ionic compounds not carrying a charge?
Answers
Answer:
yes they carry charges
Jeremiah pushed Anthony with a net force of 12 N. Anthony accelerated across the hall at 0.2 m/s2. What was Anthony’s mass?
Answers
Answer:
6
Explanation:
Work Shown:
Force = Mass*Acceleration
F = ma
12 = m*0.2
12/0.2 = m
60 = m
m = 60 kilograms
what is the electron configuration for lithium
Answers
Answer:
2,1
Explanation:
the electron configuration is 2s1
3 way to make bases
Answers
Match each term with the correct description below.
1. what is a charged atom that has gained one or more electrons?
2. What substance is held together by ionic bonds?
3. What metal and nonmetal transferrers electrons?
4. What particle has electrons that are shared unequally?
5. What forms when atoms share electrons by covalent bonds?
6. What two nonmetals share electrons?
7. What charge atom that has lost one or more electrons?
8. What two or metals "pooling" electrons?
a. metallic bond
b. covalent bond
c. anion
d. ionic bond
e. molecule
f. cation
g. compound
h. polar molecule
Answers
Answer:
1. anion
2. compund
3. ionic bond
4. polar molecule
5. molecule
6. covalent bond
7. cation
8. metallic bond
Explanation:
The half-life of carbon-14 is about ____________ years.
Fill in the blank.
Answers
Answer:
5730 years
Explanation: for more on radiocarbon dating.) and hence explain why the amount of carbon-14 in the sample decays by half over any period of 5730 years.
Write a Formula
Compound Name: Strontium Sulfate
Answers
Answer:
it's SrSO4
Explanation:
A candy bar has ____ energy.
A. Kinetic
B. Potential
Answers
Answer:
Potential energy
Explanation:
A candy bar has carbs, sugars, and calories which are potentially going to be used as energy in a body.
Answer:
B. Potential
Explanation:
Because the candy bar is sitting still.
Negative ions have ______ (More or Less) protons than electrons.
Answers
Answer:
Less
Explanation: I took the test.
Answer: negative ions have less protons than electrons.
Explanation:
The three types of symbiosis are ___ and ___
Answers
Answer:
mutualism,commensalism and parasitism
Answer:
mutualism, commensalism, and parasitism
Janet is sliding a box across the floor what does she need to know to calculate the force on a box?
Answers
Answer:
She needs to know the Mass and acceleration
Janet needs to know the mass of the box and acceleration .
What is force?Force is defined as a cause which is capable of changing the motion of an object. It can cause an object which has mass to change it's velocity. It is also simply a push or a pull . It has both magnitude as well as direction.Hence, it is a vector quantity.
It has SI units of Newton and is represented by'F'.Newton's second law states that force which acts on an object is equal to momentum which changes with time. If mass of object is constant, acceleration is directly proportional to net force acting on an object.
The concepts which related to force are thrust and torque .Thrust increases the velocity of an object and torque produces change in rotational speed of an object.
Learn more about force ,here:
https://brainly.com/question/19734564
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Li and S - covalent or ionic bond?
Answers
Answer:
It is an ionic bond.
Explanation:
Ionic bonds occur when a metal and a nonmetal combine, while covalent bonds occur between two nonmetals. Lithium is a metal and sulfur is a nonmetal.
What is the density of an object (g/cm) that has a mass of 2.78 g & a volume of 10.0
cm3?
Answers
Answer:
The answer is 0.28 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{2.78}{10} \\ = 0.278[/tex]
We have the final answer as
0.28 g/cm³Hope this helps you
Answer:
p = 0.278 g/cm3
Explanation:
points)
(06.01 LC)
Based on the kinetic theory, which statement is true? (4 points)
A
Matter consists of only large molecules.
B
Matter is made up of only charged particles.
C
The particles of matter have zero kinetic energy and potential energy.
D
The particles of matter are arranged in different ways for the different state.
Answers
Answer:
D .The particles of matter are arranged in different ways for the different state.
Explanation:
The kinetic molecular theory is used to explain the forces between molecules and the energy the molecules possesses.
One of the key postulate of this theory is that;
The particles of molecules are continual state of motion. They posses kinetic energy. In gas, the particles are random and moves in a straight line motion. Liquids are less random and only slide past one another. Solids have a restricted space and the molecules are free to move about.Therefore, we can see that the particles of matter are arranged in different ways for different state.
Which pair of elements is most likely to form an ionic compound with each other?
sulfur and carbon
barium and chlorine
oxygen and fluorine
calcium and sodium
Answers
Some things that can be made from coal are...
A. All of the above
B. Tar
C. Generating power
D. Plastics
E. Fertilizer
Answers
Answer:A
Explanation:just casuse
State which statement is a physical change or a chemical change:
(a) Sawing wood
(b) Cooking eggs
(c) Melting chocolate
(d) Chewing sweets
(e) Rusting iron
(f) Filing your fingernails
(g) Milk turning sour
(h) Blow-drying your hair
(i) Boiling water
(j) Baking a cake
(k) Burning a match
Answers
Answer:
Physical change: A,C ,D, F, H, I
Chemical Change: B, E, G, J, K
. The model shows Earth in several positions relative to the Sun. In which position is it winter in North America?
Answers
I WILL MARK BRAINLIEST!!!!! !!
(picture included with one question ^^^^^^^)
Answers
Answer:
type D
balance form .b
Explanation:
calculate the number of moles
for 66 gram of CO2
Answers
Answer:
1.55
Explanation:
The number of moles = given mass / molar mass
The given mass is 66 g and the molar mass is 44 g/molar mass
Substituting the values in, we get that:
the number of moles = 66/44
the number of moles = 1.55
hope this helped!
Can someone pls answer quickly?
Answers
answer is atom.Hope it is helpful.
Answer:
Atoms are the smallest particles that made up matter.
n which phase(s) of matter are the atoms closely packed but still able to slide past each other?
gas
liquid
solid and gas
liquid and solid
Answers
Answer:
I belive its liquid if I'm right because liquids are packed together when they take shape but they are still able to move.....brainliest???
Answer:
Liquid
Explanation:
Please don't jugde me if I got it wrong
