Answers
Answer:
The volume is 8 cm³
Hey How are you?
Explanation:
Related Questions
need points & are good at science?
Answers
Answer:
A
Explanation:
I believe the Correct answer would be A
QUICK!!!! please
Which of the following dilutions would produce 2.0M acid from 3.0M acid
A) 3.0mL acid and 2.0mL water
B) 2.0mL acid and 1.0mL water
C) 2.0mL acid and 3.0mL water
D) 1.0mL acid and 2.0mL water
Answers
Answer:
that's a difficult question
Explanation:
Sorry!!!!!
___________ mL = 2.2 L
Answers
Answer:
2,200 mL I believe it is.
Answer:
2,200 is the answer of your question
Express the percent composition of each
element in C10H8.
Answers
Answer:
Element Symbol Mass percent
Carbon C 93.7088
Hydrogen H 6.2912
blance: Mg + HNO2 → Mg(NO2)2 + H2
Answers
Explanation:
Mg + 2HNO2 → Mg(NO2)2 + H2
Answer:
Mg + 2HNO2 → Mg(NO2)2 + H2
Explanation:
How are seasons different North & South of the equator
Answers
Answer:
seasons experienced by the northern and southern hemisphere always differ by six months when it is summer in the northern hemisphere, it is winter in the southern hemisphere
Explanation:
Answer:
ohhhhhhh she -he was having a point
Bubbles are released when nitric acid is added to a potassium carbonate solution.
What is the net ion
Answers
Hi can I have a shout out please thank you for your reply thank you for the wonderful reply thank me love
The empirical formula of a compound is CH. Its molecular mass is 70.14 g.
What is the factor? |
What is its molecular formula? (Write your formula without any space A2B3)
Answers
Hope this helps you
as the train rushes down the hill the kinetic energy of the train _____ and the gravitational potential stored between the train and earth ________
Answers
GPE: decreases
Which family group on the peirodic table has the most elements
a. metals
b. nonmetals
c. trainsiton elements
d. metalloids
Answers
Answer:
C. Transition metals
Explanation:
Out of the answers transition metals have the most elements on the periodic table.
Suppose you weigh the unknown substance on an electronic balance and find it has a mass of 445 grams. Analyzing the products of decomposition, you find that the masses of the elements in the sample are 232 grams of carbon, 58 grams of hydrogen, and 155 grams of oxygen. Finally, through further experimentation, you determine that the molar mass of the compound is 46.07 grams/mole.
Calculate the amount, in moles, of each component element in your substance. Use the periodic table to help you find the necessary molar masses.
____ moles of carbon
____ moles of hydrogen
____ moles of oxygen
Answers
Answer:
19.32 = moles of carbon
57.54 = moles of hydrogen
9.69 = moles of oxygen
Explanation:
232 g carbon × 1 mol C / 12.011 g C= 19.32 mol C
58 g hydrogen × 1 mol H / 1.008 g H = 57.54 mol H
155 g oxygen × 1 mol O / 15.999 g O = 9.69 mol O
6.0x10^26 molecules of sodium hydroxide
Answers
Answer:
6E26
Explanation:
Whats the correct answer ?
Answers
Pls help me with this question: This diagram represents the process of?
A.selective breeding
B.natural selection
C.metamorphosis
D.germination
Answers
Answer:
A
Explanation:
Selective Breeding
Is your answer because if you look closely to the pic you see the process
Hope this helps:)
Pls mark brainlist
Answer:
A
Explanation:
How many miles will a person run a 400 km race?
Answers
Answer:
248.548
Explanation:
Chemistry question on enthalpy HELP!!!!
Answers
Answer: The enthalpy change for this reaction is, -803 kJ
Explanation:
The balanced chemical reaction is,
[tex]CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)[/tex]
The expression for enthalpy change is,
[tex]\Delta H=\sum [n\times \Delta H_f(product)]-\sum [n\times \Delta H_f(reactant)][/tex]
[tex]\Delta H=[(n_{CO_2}\times \Delta H_{CO_2})+(n_{H_2O}\times \Delta H_{H_2O})]-[(n_{O_2}\times \Delta H_{O_2})+(n_{CH_4}\times \Delta H_{CH_4})][/tex]
where,
n = number of moles
Now put all the given values in this expression, we get
[tex]\Delta H=[(1\times -394)+(2\times -242]-[(2\times 0)+(1\times -75)][/tex]
[tex]\Delta H=-803kJ[/tex]
Therefore, the enthalpy change for combustion of methane is, -803 kJ
FOR 40 points!!!! I need the whole page finish !!!!!! Pleaseeeeee!!!!!!! I will five u brainlist !!!!!!
Answers
temperature is defined as the average kinetic energy of the molecules. what is the temperature reading when all molecules completely stop vibrating?
A.0 degrees F
B. 0 degrees C
C.0 degrees K
D.273 degrees K
Answers
Answer:
Temperature is the average kinetic energy of the molecules. Absolute zero is the temperature where molecular motion stops and is the lowest possible temperature. ... The relationship between Celsius and Kelvin temperature scales is given by K = °C + 273.15.5
so the answer is B
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9.
Which element is most likely to conduct heat and electricity?
A. Na B. Ca C.P D. Ne
Answers
Answer:
A. Na
Explanation:
Sodium is a good conductor of electricity and heat because it has only one electron in its valence shell.
i hope this helps :)
Answer:
C.) P
Explanation:
I believe this is correct, lmk if it's not.
PPPPPPPPLLLLLLLLLSSSSSS HHHHHHEEEEEELLLLPPPPP!!!!!!!!!!!!!!
Answers
Answer:
B
Explanation:
The student is not able to move the box in D --> 55N, 0N. Since the net force is 0, it means that no force is being applied. So you will choose answer B from your options.
Hope this helps, thank you !!
when a coil of wire is connected to a batter, an electric current flows through it. True or False
Answers
Answer:
True i think.
Explanation:
Hold the slides for observation
Answers
Explanation
DUE IN 10 MINUTES PLZZZZ
Part IV: True/False
____ 38. The mass of the nucleus is small compared to the mass of the atom.
____ 39. Alpha particles would be harder to turn than Beta particles.
____ 40. Positive charge was spread all throughout the atom in the Rutherford Model.
____ 41. The Manhattan Project was located in New York for most of its duration.
____ 42. The cathode rays produced by Thomson were identical for all filaments.
____ 43. It is possible to know where an electron is and what path it is on.
____ 44. X-rays are produced when fast moving electrons strike phosphor coatings.
____45. All nuclear changes involve at least two reactants.
Answers
Answer:
true false true false true fake
Answer:
38. False
39. True
40. True
41. True
42. False
43. False
44. True
45. True
Explanation:
Note these are just my guesses they might not all be correct but I will do my best.
Hope this helps you at all! Feel free to correct me if I got any of them wrong :)
4 points
9. Name the scientists that played a major role in the development of cell theory. *
Answers
Hope this helps
Have a great day/night
As you climb through the upper stratosphere, the temperature: increases decreases in constant
Answers
Answer:
It increases.
Explanation:
I hope this helps.
Answer:
Increases
Explanation:
Hope this helps :)
PLEASE HELPPPP!!! IM BEING TIMED
Based on Map 1, which statement describes the main cause of the
weather pattern known as the Arizona monsoon?
A)Much of the southwestern United States is desert.
B)Ocean water to the south of Arizona is warm.
C)Winds at this latitude tend to blow from west to east.
D)Land masses heat up more quickly than oceans.
Answers
Answer:
B)
Explanation:
This should be the correct answer, lmk if it's not
As in the given image, the weather pattern known as Arizona monsoon is caused by the winds at this latitude tend to blow from west to east. Thus, option C is correct.
What is Arizona monsoon?The Arizona Monsoon is a well-defined meteorological phenomenon that affects the southwest region of North America during the summer. It is scientifically referred to as a meteorological "singularity."
Arizona experiences its strongest wind flow during the winter months from the west or northwest, coming from California and Nevada. The winds change to a southerly or southeasterly direction as the summer months approach.
From the Pacific Ocean and the Gulf of Mexico, moisture moves northward. Statewide moisture conditions are drastically altered as a result of this alteration.
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2 X(9) + Y (9) = 2XY (9)
A reversible reaction is represented by the equation above. The amounts of reactants and products at time 1 are shown in the particle diagram on the left. The particle diagram on the right shows the
amounts of reactants and products at time 2. Based on the diagrams, what can be inferred about the relative rates of the forward and reverse reactions between time 1 and time 2?
a. nothing can be inferred because the total number of X and Y atoms is the same
each diagram
b. Nothing can be inferred because the temperature of the system may have been changed
c. The rate of the reverse reaction is greater than the rate of the forward reaction
d. The rate of the forward reaction is greater than the rate of the reverse reaction.
Answers
Answer:
The answer is D. The rate of the forward reaction is greater than the rate of the reverse reaction.
Explanation:
The forward reaction rate was greater than the reverse reaction rate because more product is present at time 2. This is the answer from ap classroom.
The given reaction has been inferred the increased rate of forward reaction than reverse reaction. Thus, option D is correct.
The chemical reaction has been given by the combination of reactants for the formation of product. The reactants combine in the fixed proportion to form the product.
The rate of reaction has been defined as the rate of formation of product or the disappearance of reactants.
Rate of reactionThe forward reaction has been given as the rate of formation of product. The reverse reaction has been given as the rate of dissociation of product.
In the given condition, the number of reactant at time 1 are more than the reactant at time 2. This states that there has been increased formation of the product at time 2.
Thus, the given reaction has been inferred the increased rate of forward reaction than reverse reaction. Thus, option D is correct.
Learn more about reverse reaction, here:
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Hello can someone pls help me with this question! (Please explain why)
QUESTION: How is an increase in surface area achieved?
A. increasing the size of the reactant particles
B. decreasing the size of the reactant particles
Answers
Answer:
letter A.
Explanation:
the rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. this is done by cutting the substance into small pieces, or by grinding it into a powder.if the surface area of a reactant is inceased: more particles are exposed to the other reactant.
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Most chemical reactions have what
Answers
Answer:
The first one
Explanation:
Hope it helps
Answer:
I think it would be: have starting substances that collide with each other
Explanation:
Two or more reactants interact to create different substances called products.
"Is air pollution related to lichen growth?"
What is a likely hypothesis for the question?
A. Air pollution must affect lichen growth.
B. No, air pollution does not affect lichen growth.
C. If air pollution is high, then lichen growth is high.
D. If air pollution is high, then lung disorder cases are high.
Answers
Air pollution must affect lichen growth because lichens have no roots they get all their nutrients from the air. If the air has pollutants that can become toxic for lichens.
What are lichens?A lichen can be described as a composite organism that arises from algae or cyanobacteria living among filaments of fungi species in a mutualistic relationship. Lichens have different properties that come in many colors, sizes, and forms.
A macro lichen can be defined as a lichen that is either bush-like or leafy. Lichens do not have roots therefore they absorb water and nutrients as plants do but like plants, they form their own nutrition by photosynthesis.
If lichens are exposed to air pollutants they are unable to avoid the accumulation of air pollutants. Because lichens possess no roots, their primary source of most nutrients is the air.
Lichen decline can be because of the accumulation of toxic substances as well as altered nutrient supplies that favor one symbiont over the other. Therefore, option (A) is correct.
Learn more about Lichens, here:
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