Letter b is the answer
How many grams are in 1.5 moles of C5H12
Answer:
72.14878 grams
Explanation:
A rigid cylinder with a movable piston contains a sample of hydrogen gas. At 350.
K, this sample has a pressure of 210. kPa and a volume of 9.50 L. What is the
volume of this sample at STP? (Round your answer to correct number of sig figs)
Answer: The volume of this sample at STP is 15.4 L
Explanation:
The combined gas equation is,
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 210 kPa
[tex]P_2[/tex] = final pressure of gas = 101.3 kPa ( at STP)
[tex]V_1[/tex] = initial volume of gas = 9.50 L
[tex]V_2[/tex] = final volume of gas = ? ( at STP)
[tex]T_1[/tex] = initial temperature of gas = 350 K
[tex]T_2[/tex] = final temperature of gas = 273 K ( at STP)
Now put all the given values in the above equation, we get:
[tex]\frac{210\times 9.50}{350}=\frac{101.3\times V_2}{273}[/tex]
[tex]V_2=15.4[/tex]
The volume of this sample at STP is 15.4 L
Help would be much appreciated! i'll mark brainliest
Answer:
group 2
Explanation:
True or false: Parasites help their host by providing nutrients to them
Answer:
true
Explanation:
Answer:
False..
Explanation: parasites do not provide you with anything good. The parasite obtains nutrition directly from the body of the host
If lithium and iodide form an ionic bond, which will be the anion
Answer:
lithium iodide is formed by sharing of electrons where is Potassium iodide is formed by opposite charges and electrostatic force between them.
Explanation:
PLEASE HELP ME ASAP
Why is prerequisite knowledge important to high school students?
It helps you remember what you learned before.
It makes basic knowledge easier to learn.
It prepares you to learn at increasingly complex levels.
It helps you identify the behaviors new assignments require.
Answer:
Answer B
It makes basic knowledge easier to learn.
Explanation:
Assessing students’ prior knowledge allows an instructor to focus and adapt their teaching plan. For students, it helps them to construct connections between old and new knowledge.
Alligators are the large predators that eat many smaller animals in a swamp how might removing the alligators from a swamp habitat create a decrease vegetation
Pls answer as quick as possible pls.
Assertion: Elements and compounds are pure substances.
Reason: Properties of compounds are different from those of its constituent elements.i) Both A and R are true and R is the correct explanation of the assertion.
ii) Both A and R are true but R is not the correct explanation of the assertion.
iii)A is true but R is false.
iv)A is false but R is true.
Answer:
The answer is number 3
Explanation:
hope it helps
why does an aluminum horseshoe bend but not break when a blacksmith pounds it into shape with a hammer?
Answer:
it's because aluminium is a ductile material
1. If Susan reproduced asexually what would be the outcome if she had offspring? What would they look like?
Answer:
They would look exactly like her, when you produce asexually your offspring is a clone of you. The offspring is genetically identical to the parent.
Explanation:
Write the electron configuration for Gold
Answer:
[Xe] 4f145d106s1
Explanation:
Immunotherapy attacks cancer cells by boosting:
a. The rate of cell division
b. The number of benign tumors
c. The frequency of body scans
d. The body's own defenses
Answer:
I think its the
d. The body's own defenses
Question 4
Calculate the mass of 7.1 x 1024 formula units of magnesium hydroxide, Mg(OH),
Answer: 69 g answer: I looked it up and it said .org, please give me brainliest!
Pls answer this question for points 15 and mark brainless pls easy I don’t know pls
Answer:
nitrate
Explanation:
nitric acid produces nitrate salt
which eletric configuration represents an atom of lithium in an excited state?
Answer:
2-0-1, 1-1-1, 0-1-2, but they must all equal 3 electrons in total
Explanation:
Which sphere is dependent on all the other spheres in order to exist?
hydrosphere
lithosphere
atmosphere
biosphere
Answer:
biosphere
Explanation:
Living things need water (hydrosphere), chemicals from the atmosphere, and nutrients gained by eating things in the biosphere.
Which is a difference between animal populations in primary succession and secondary succession?
A.
Animals can be present during the start of secondary succession, but they are never present during the start of primary succession.
B.
There is more animal biodiversity after the process of secondary succession has been completed.
C.
There is more animal biodiversity after the process of primary succession has been completed.
D.
Animals can be present during the start of primary succession, but they are never present during the start of secondary
Answer:
this may help
Explanation:
in primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.
Animals can be present during the start of secondary succession, but they are never present during the start of primary succession is a difference between animal populations in primary succession and secondary succession. Therefore, option A is correct.
What is primary succession ?When a new piece of land is produced or is first exposed, primary succession occurs. This may occur, for ex., when lava solidifies and forms new rocks or when a glacier recedes and reveals bare rocks. In the initial succession.
Primary succession takes place in a habitat that has never supported life. In a region that was formerly populated but had a disturbance, such a wildfire, secondary succession happens. In this case, dirt would still exist.
In primary succession, living organisms first occupy newly exposed or newly created rock. In secondary succession, a previously inhabited region is disrupted, then recolonized as a result of the disturbance.
Thus, option A is correct.
To learn more about the primary succession, follow the link;
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what is the most visible product of plate tectonic?
A.Mt.Apo
B.The Himalayas
C.Mt.Everest
Answer:
The Himalayas
Explanation:
Select the correct answer from each drop-down menu.
A _ Is scientific knowledge established through direct observation and remalns constant. Sclentific knowledge can change
when scientists _
Answer:
A (Hypothesis) is scientific knowledge published through direct observation and remains constant scientific knowledge can change when scientists (generate hypothesis)
This chart shows descriptions of the atoms for four different substances.
Which substance is a solid?
Object 1
Object 2
Object 3
Object 4
what is represented on the periodic table by number 4
Answer:
there is nothing there?
Explanation:
A group of organs work together to perform a certain function is called?
Answer:
it's called an organ system
Answer:
organ system
Explanation:
I Honestly dont know if its correct but worth a shot
4. After virtual school you decide to make a milkshake. You know that the best
milkshake is made with 500 ml of milk and 120 g of chocolate ice cream.
Chocolate ice cream weighs 0.6 g/ml. How many liters of ice cream should you
add?
120 ml
2401
O 0.21
4.0 di
Answer:
The answer actually isn't all that complicated. 120 grams is equivalent to 120 milliliters, and 120 milliliters is equal to 0.21 liters, since you divide 120 by 1000.
Someone answer the limited regent...
Answer:
20 g Ag
General Formulas and Concepts:
Chemistry - Stoichiometry
Using Dimensional AnalysisChemistry - Atomic Structure
Reading a Periodic TableExplanation:
Step 1: Define
[RxN] Cu (s) + AgNO₃ (aq) → CuNO₃ (aq) + Ag (s)
[Given] 10 g Cu
Step 2: Identify Conversions
[RxN] 1 mol Cu = 1 mol Ag
Molar Mass of Cu - 63.55 g/mol
Molar Mass of Ag - 197.87 g/mol
Step 3: Stoichiometry
[tex]10 \ g \ Cu(\frac{1 \ mol \ Cu}{63.55 \ g \ Cu})(\frac{1 \ mol \ Ag}{1 \ mol \ Cu} )(\frac{197.87 \ g \ Ag}{1 \ mol \ Ag} )[/tex] = 16.974 g Ag
Step 4: Check
We are given 1 sig fig. Follow sig fig rules and round.
16.974 g Ag ≈ 20 g Ag
In some types of decay, elements undergo transmutation. Which two
statements correctly describe this process?
A. The number of nucleons is the same before and after.
B. The parent element is different from the daughter element.
C. The number of atoms is conserved, but the number of nucleons
is not.
D. The atomic masses of the parent and daughter elements are the
same.
The statements which describes elements undergoing transmutation are the number of nucleons is the same before and after and the parent element is different from the daughter element.
What is an element?It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
Learn more about element,here:
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What does water's polarity cause?
Place these unknown pH test papers in order from most acidic to most alkaline.
Four pH indicator strips.
Answer:
In order of the colors of the pH test papers from most acidic solutions to most alkaline solutions, the colors of the pH test papers would be
Red > Orange/Pink > Purple > Blue
(Red) Most acidic (Blue)Most alkaline
Explanation:
We can use the different colors of pH test papers to determine the acidity or alkalinity of a solution.
Definitions
A pH test paper is a strip of indicator paper which changes colour when placed in acidic or alkaline solutions.
A solution is said to be acidic if it turns the colour of the pH test paper RED
A solution is said to be alkaline/basic if it turns the colour of the pH test paper BLUE
Color changes
If the pH test paper turns red, then the solution is a very strongly acidic solution with pH less than 3 ( ie pH between 1-3)
If the pH test paper turns orange or pink, then the solution is a weak acidic solution with pH greater than 3 ut less than 7
If the pH test paper turns purple, then the solution is a weak alkaline solution with pH greater between 8-11
If the pH test paper turns blue, then the solution is a very strong alkaline solution with pH between 11 - 14
Summary
Therefore, in order of color changes from the most acidic solutions to most alkaline solutions, the colors of the pH test papers would be
Red > Orange/Pink > Purple > Blue
Most acidic Most alkaline
Answer:
d<c<a<b
Explanation:
ANSWER THESE 5 MULTPLE CHOICE QUESTIONS!!!
I'LL GIVE 30 POINTS AND A BRAINIEST:)
Answer:
Q 1 oxygen 2 6
Q2 D
Q3 B
4 Mg
5 B
Explanation:
Help ASAP
Avocados have a pH of 6.27. Avocados are categorized as...
O Base
O An Acid
O Neutral
Answer:
Base
Explanation:
an electrical current only moves through a ____ circuit.
1.broken
2.new
3.closed
4.open
Answer:
Closed
Explanation:
