0.143 moles is the volume of 104 g of ethine under normal conditions
What is the momentum of a car with a mass of 1,300 kg traveling north at a speed of 28 m/s?
Answer:
p = 36400 kg·m/s
Explanation:
p=mv
p= Momentum
m= mass (1300 kg)
v= 28
1300 × 28
= 36400 kg·m/s
The Momentum of the car is 36400 kg-m/s.
What is Momentum ?Momentum is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction. m is an object's mass and v is its velocity
Given that,
Mass of the car, m = 1300 kgSpeed of the car, v = 28 m/s (towards north)(m is an object's mass and v is its velocity)
To find :
The momentum of car, p
Solve :
Let p is the momentum of an object. It can be calculated by the product of mass and its velocity. The formula to find it is given by :
p = m x v
= 1300 x 28
= 36400 kg-m/s.
Therefore, the momentum of the car is 36400 kg-m/s.
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Which of the following statements is FALSE?
The microscopic size of cells enable them to function properly.
Most organisms on Earth are multi-celled.
Some cells can be shaped like a ball.
Growing children’s cells are constantly dividing.
Answer:
The answer is functioning properly ok dude?
Explanation:
Answer: "The microscopic size of cells enable them to function properly.
Most organisms on Earth are multi-celled." is false
Explanation:
In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. Survival of the eukaryotes depends upon interactions between many cell types, and it is essential that a balanced distribution of types be maintained. This is achieved by the highly regulated process of cell proliferation. The growth and division of different cell populations are regulated in different ways, but the basic mechanisms are similar throughout multicellular organisms.
HELPP PLEASEEEEEEEEEEEEE
Answer:
Potential energy I believe
Explanation:
how many atoms are in each compound ?
Which of these levels of ecological organization includes the other three?
A. community
B.ecosystem
C.organism
D.population
describe nucleus of atom
Answer:
the nucleus is made up of protons and neutrons
Which of the following is NOT an atom that hydrogen bonds?
Select one:
a. Oxygen
b. Nitrogen
c. Fluorine
d. Sodium
Answer:
The answer is D sodium
Explanation:
True or false; When Something Heats up, it moves faster, and when something cools down, It moves slower.
Answer:
This is true
Explanation:
Even at the atomic level when an element is heated up, the atoms continue to move faster and continue colliding.
The opposite happens with the cooling of elements.
Microscope Structure and Function Worksheet
Pdf
Pls match the letters according to the numbers
Pls answer for 25points
Pls do them correctly
The melting point of oxygen is -218°C and its boiling point is -183°C. What is the state of oxygen at -200°C?Immersive Reader
it is in a liquid state
Explanation:
Plants cells also gain energy through cellular respiration.
True or false?
Answer:
true
Explanation:
Karla is reading about a type of single-celled microorganism that can live inside the human body. This type of organism can either be harmful or harmless to people, depending on the type. One harmless type lives in the intestines and helps the body digest food. One harmful type can cause strep throat. Which type of organism is Karla most likely reading about?
A bacteria
B fungi
C parasites
D viruses
please help
Answer:
its bacteria
Explanation:
Single-celled organisms can directly take in nutrients from their outside ... Figure 1. The digestive systems of representative animals. Images from ... There are two types of animal body plans as well as two locations fordigestion to occur
Answer:
A bacteria
Explanation:
i did it LOL
Think about a synthetic material that you use every day. How
could that material be improved to better fit its function?
explanation: Synthetic fiber or synthetic fibre (in British English; see spelling differences) are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms. They are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber-forming materials through spinnerets, forming a fiber. These are called synthetic or artificial fibers. Synthetic fibers are created by a process known as polymerization, which involves combining monomers to make a long chain or polymer. The word polymer comes from a Greek prefix "poly" which means "many" and suffix "mer" which means "single units". (Note: each single unit of a polymer is called a monomer). There are two types of polymerization: linear polymerization and cross-linked polymerization.
Determine the number of moles in a 100.0g sample of water.
Answer:
5.55 moles is the answer ....
Explanation:
if 18g H2O is equal to 1 mole then 100 g H2O is how much?
100/18 which is 5.55
Answer:
5.551
Explanation:
100.0g x 1mol H20/18.015g H20 = 5.551 moles of H20
The 18.015g is from the periodic table. H = 1.008x2 = 2.016g H2
0= 15.999
15.999 + 2.016= 18.015
The density of water H20 is bout 1 g/ml. If u have a bottled water that is 500 ml how many grams is this
Answer:
500 grams
Explanation:
500 milliliters x 1 gram per millileter = 500 grams.
what is the equation for hydrogen peroxide
Answer:
H2O2
Explanation:
2 hydrogen, 2 oxygen wikipedia it
Answer:
hey!
Your answer is that the equation for Hydrogen Peroxide is [tex]H_{2}[/tex][tex]O_{2}[/tex]
Explanation:
Its formed when [tex]H_{2}[/tex]O and [tex]O_{2}[/tex] react chemically together!
HOPE THIS HELPED!
Someone help me please!!!
A. 6 moles
B. 9 moles
C. 3 moles
D. 20 moles
I think please check me, in case I am wrong
What is the freezing point of a solution of 498mL of water (solute) dissolved in 2.50 L of ethanol (solvent), C2H5OH? The density of C2H5OH is 0.789g/cm3. (Remember that water has a density of 1.0 g/cm3.)
Answer:
Freezing T° of solution is -142.4°C
Explanation:
This excersise is about colligative properties, in this case freezing point depression,
ΔT = Kf . m . i
Where ΔT = Freezing T° of solvent - Freezing T° of solution
Kf = Cryoscopic constant
m = mol/kg (molality)
i = Number of ions dissolved.
Water is not ionic, so i = 1
Let's find out m.
We determine mass of water, by density
498ml . 1 g/mL = 498 g
We convert the mass of water to moles → 498 g . 1mol/18g = 27.6 moles
We determine mass of solvent by density
2500 mL . 0.789 g/mL = 1972.5 g
Notice, we had to convert L to mL to cancel units.
1 cm³ = 1 mL
We convert the mass from g to kg → 1972.5 g . 1kg /1000g = 1.97kg
We determine m = mol/kg → 27.6mol / 1.97kg = 13.9 m
Kf for ethanol is: 1.99 °C/m
Freezing T° for ethanol is: -114.6°C
We replace at formula: - 114.6°C - Freezing T° solution = 1.99 °C/m . 13.9 m . 1
- 114.6°C - Freezing T° solution = 27.8 °C
- Freezing T° solution = 27.8°C + 114.6°C
Freezing T° Solution = - 142.4 °C
In eukaryotic cells, RNA is transcribed from DNA in the _____
ribosomes
nuclear membrane
cytosol
nucleus
Answer:
The answer is Nucleolus
which statement best explains why chlorine is added to drinking water? A. Chlorine cures infections caused by bacteria or other microorganisms B. Chlorine protects people teeth against cavities C. Chlorine prepares the body to fight future infections D. Chlorine kills most pathogens in water
Answer:
to protect peoples teeth against cavities
Explanation:
i just know
Answer: its D
Explanation: A.P.E.X.
Which of the following ideas is NOT accepted as true according to today’s atomic theory?
a. Atoms are the basic unit of matter
b. Electrons move in circular
paths around the nucleus
c. Protons, electrons, and neutrons are smaller than the atom
d.The nucleus has charged and uncharged particles
Answer:
D
Explanation:
Which of the following compounds
does not contain a polar Covalent bond
A) CH2 CH₂ CH₂OH
B) ozone
C)CH₂ CH (NH₂) CH₂ CH2
D) CH4 CH₂ CH₂ Ch
H2 li
Answer:
the correct answer is letter B
A quanta of electromagnetic energy is called *
Answer: A quantum of electromagnetic energy is called a photon. Also, do you mean a quantum because I don't think a quanta is a thing
Explanation:
What is the formula for copper(I) phosphate(v)
Answer:
Cu3PO4
Explanation:
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, Cu[tex]_3[/tex]PO[tex]_4[/tex] is the formula for copper(I) phosphate(v).
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. Cu[tex]_3[/tex]PO[tex]_4[/tex] is the formula for copper(I) phosphate(v). Cu[tex]_3[/tex]PO[tex]_4[/tex] is an ionic compound with cation Cu⁺¹ and anion as PO₄³⁻.
Therefore, Cu[tex]_3[/tex]PO[tex]_4[/tex] is the formula for copper(I) phosphate(v).
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hey guys i dont want to beg for help but i just am stuck in this q please help
I try this before but for me is letter C
Answer:
C
Explanation:
i took the test
Metal x combines with fluorine to form XF2. what compound does it form with the sulfate ion?
A. XSO4
B. X2SO4
C.X(SO4)2
Explanation:
The answer is A b/c
the polyatomic SO4² have 2 valance electron,also
the metal X also have 2 valance electron so,They cancel each other
45 grams of ammonia, NH3, in 0.75 L of solution.
After the shuttle disaster, an unknown compound residue was removed from a piece of the debris. Upon analysis, it was found to contain 2.61 g of carbon, 6.09 g of nitrogen, and 1.31 g of hydrogen. What is its empirical formula?
Answer:
The final empirical formula is [tex]C_2 N_5 H[/tex]
Explanation:
Given
The amount of carbon, nitrogen and hydrogen in a given compound is as follows
C:N:H
[tex]2.61 : 6.09 : 1.31[/tex]
On simplifying the ration values we get
[tex]\frac{2.61}{1.31} : \frac{6.09}{1.31} : \frac{1.31}{1.31}[/tex]
So the final ratio is
[tex]2 : 5 : 1[/tex]
The final empirical formula is [tex]C_2 N_5 H[/tex]
What is the mass of a liquid that has a density of 124 g/mL and takes up a volume of 18 mL. What mass should the liquid have? (round you answer to the nearest hundredth)
1. compare a mixture and a compound , how are they like?
Answer:
Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances.
I hope it's helpful!
Answer:
COMPOUND= A compound is a substance that is formed when two or more elements combine chemically .
MIXTURES= Mixtures consist of two or more substances simply mixed together , but not chemically combined .
