Answer:
AINO3 - 89 g/mol
Explanation:
Molar mass of a compound or molecule is obtained by summing the individual atomic masses of the elements that makes the compound.
In this question, the elements are Al, N and O
The molar mass is given as;
Molar mass = Al + N + 3 (O)
Al = 27
N = 14
O = 16
Molar mass = 27 + 14 + 3(16)
Molar mass = 89 g/mol
I'll give brianliest if correct .
Answer:
the answer is decaying wood
1.
is precipitation that reaches Earth's surface as frozen water
crystals.
(2 points)
Rain
Sleet
Snow
Hail
What is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution?
Answer:
D
Explanation:
all ya got to do is divide the moles from the solution... so 3.0 divided by 0.25. put it in a calculator
hope this helps
The molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution is 12M.
What is Molarity?Molarity of a given solution is known as the total number of moles of solute per litre of the solution. A solution that is 1.00 molar (written 1.00 M) contains 1.00 mole of solute for every liter of solution.
Molarity = (No. of moles of solute ÷ Volume of solution in liters)
The unit of molarity is mol L⁻¹.
Molarity is temperature dependent because as temperature changes, volume of the solution also changes.
Given,
3.0 moles of Saline (NaCl)
Volume of solution = 0.25L
Molarity = (No. of moles of solute ÷ Volume of solution in liters)
Molarity = 3 ÷ 0.25 = 12 M
Therefore, The molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution is 12M.
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What has to be equal on both sides of the chemical reaction in order for it to be balanced?
total number of molecules
sum of the subscripts
total number of atoms
sum of the coefficients
Answer:
total number of atoms
Explanation:
if you have 6 carbon atoms in reactants then you should have 6 carbon atoms in products.
Photosynthesis and cellular respiration have a unique relationship in that the products of one process are the reactants of the other. For example the products of photosynthesis are reactants of cellular respiration.
Select ALL of the molecules that are produced in photosynthesis and then used in cellular respiration.
A) ATP
B) water
C) oxygen
D) glucose
E)carbon dioxide
Answer:
the answer is c) oxygen and D) glucose. Read the question correctly. it says what is *produced* in photosynthesis and *used* in cellular respiration.
Explanation:
photosynthesis produced oxygen and glucose to which cellular respiration uses (glucose and oxygen) to produce carbon dioxide and water. so carbon dioxide and water ARE NOT the answer to this.
also I took the test so yeah
The molecules that are produced in photosynthesis and then used in cellular respiration include the following: oxygen and glucose.
PHOTOSYNTHESIS:
Photosynthesis is the process whereby green plants obtain their own food using energy from sunlight. Photosynthesis generally combines carbon dioxide and water molecules to produce glucose and oxygen as products. 6CO2 + 6H2O → C6H12O6 + 6O2CELLULAR RESPIRATION:
Cellular respiration is the process whereby living organisms obtain energy by breaking down food molecules. Cellular respiration uses the products of photosynthesis, which are glucose and oxygen, to synthesize energy and giving off carbon dioxide and water as products. C6H12O6 + 6O2 → 6CO2 + 6H2OTherefore, molecules that are produced in photosynthesis and then used in cellular respiration include the following: oxygen and glucose.Learn more at: https://brainly.com/question/1388366?referrer=searchResults
Which mutation in a fruit fly could be passed on to its offspring
Why is gold considered matter?
O A. Gold takes up space and has mass.
B. Gold can be used to make different products.
C. Gold is very valuable.
O D. Gold can be heated and cooled.
Answer:
A
Explanation:
Anything which takes up space and has mass is considered matter.
Please mark Brainliest if this was helpful!
Please help! It’s due today. I’ll give brainliest
I need help, please answer
Answer:
it explodes
Explanation:
Answer:
Mrs girl I'm sorry I don't know
I just need the points
how many helium atoms are in a mole of helium?
Answer:1 mole of helium gas contains 6.02 x1023 helium atoms
Explanation:I hope this helps
True or False
All cells are the same on the inside
HELP ME!
2. How would type of substance affect the rate of reaction?
Answer: IN terms of the collision theory, increasing the concentration of a reactant increases in the number of collisions between the reacting species per second and therefore increases the reaction rate.
Explanation: hope u get it right
Algae and other phytoplankton are the major producers of the earth's:
oxygen
carbon dioxide
hydrogen
nitrogen
Answer:
oxygen
Explanation:
pls mark me brainliest right
When heating a liquid in a test tube, which of the following safety precautions should you take?
A.
Wear latex gloves.
B.
Heat the test tube on an open flame if possible.
C.
Put a tight lid on the test tube.
D.
Angle the test tube away from yourself and others.
Answer:
D
Explanation:
so that incase the liquid being heated splashes it doesn't land on anyone's skin
Are humans more similar to trees or bacteria? How do you know?(1 point)
A
Humans are more similar to bacteria because trees cannot move around their environment.
B
Humans are more similar to trees because bacteria are too small to see.
C
Humans are not similar to trees or bacteria. Humans are a special species that is not related to any other species on Earth.
D
Humans are more similar to trees because all plants and animals are part of the same domain.
Answer:
a
Explanation:
Answer:
Option D
Explanation:
A and B both make sense to some level.
For option A,trees can only move while bacteria and humans can both move and locomote so there's that similarity
For option B,humans and plants are not micro organisms but bacteria are so there's that similarity
Option C is just not true
Option D is the right answer thus both humans and animals are eukaryotes
Cyclopropene decomposes to propene when heated to 500 C, calculate rate constant for the first order reaction 0 min 1.48 mmol/L
Answer:
k = 0.0306 min-1
Explanation:
The table is given as;
Time, Concentration
0 1.48
5 1.27
10 0.98
15 0.84
The integrated rate law for a first order reaction is given as;
ln [A] = -kt + ln [Ao]
where;
[A] = Final Concentration
[Ao] = Initial Concentration
k = rate constant
t = time
In the table, taking the first two sets of values;
t = 5
k = ?
[Ao] = 1.48
[A] = 1.27
Inserting into the equation;
ln(1.27) = - k (5) + ln(1.48)
ln(1.27) - ln(1.48) = -5k
-0.1530 = -5k
k = -0.1530 / -5
k = 0.0306 min-1
Which Lewis electron-dot diagram represents an atom of a Group 13 element in the ground state?
Answer:
sodium chloride and lead (II) acetate
potassium sulfate and strontium iodide
chromium (III) nitrate and sodium phosphate
1. 2NaCl + Pb(CH3COO)2 → 2NaCH3COO + PbCl2
2. K2SO4 + SrI2 → KI + SrSO4
3. Cr(NO3)3 + Na3PO4 →CrPO4 + NaNO3
Explanation:
A tall stack of books is sitting on a table. One of the reasons the book stay where they are is because-
Choices:
A: The chair is helping to hold the table up.
B: The table is exerting a balanced force on the books.
C: The books are exerting an unbalanced force on the table.
D: The books keep shifting enough to keep the stack balanced.
Please help me!
Did the argon change state as you heated the atoms?
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. Solids, liquids and gases all expand when heat is added. When heat leaves all substances, the molecules vibrate slower. So yes, it can if the heat is strong enough to change the objects compesistion! :)
Argon is a noble gas. It always exists in the form of gas. The boiling point of argon is very higher and thus we cant change its state, by simply heating.
What is argon ?Argon is 18th element in periodic table. It has 18 electrons and 18 protons. The mass number of argon is around 36 g/mol. Argon is included in the group 18 called the noble gases.
All the noble gases are highly stable and they are not reactive at normal conditions. They cant be easily form compounds or change their state by excitation or photochemical reaction.
Argon has higher melting point and boiling point. It cannot be easily transformed to another state by simply heating. But there occurs electron excitation, where the phase change cannot occurs.
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Maya made this picture to represent a chemical reaction:
Which of the following statements best explains the type of chemical reaction represented by Maya's picture?
1) It is neither a synthesis reaction nor a decomposition reaction because the total mass of the products is less than the total mass of the reactants.
2) It is neither a synthesis reaction nor a decomposition reaction because two reactants form two products.
3) It represents a synthesis reaction because the same atoms are present in the reactants and products.
4) It represents a decomposition reaction because two reactants break apart and form two products.
Answer:
2) It is neither a synthesis reaction nor a decomposition reaction because two reactants form two products.
Explanation:
This is not a synthesis reaction, which takes place when two or more reactants combine to form one product. This is a single replacement reaction, where the cation of an ionic compound "trades places" with another element that becomes the cation in a new ionic compound.
what is the uncertian digit in 0.054 g
Answer:
5.4g
Explanation:
Due tonight! Please help!
Please show your work and don’t spam or delete answers
I will mark Brainliest!
Calculate the concentration in grams per liter of a 450.0 mL solution containing
0.0762 moles of iodine gas (I2)
Answer:
42.98 g/L
Explanation:
4) Calculate the net force *
3 N
10-7= 3
the arrows are opposing each other.
Answer:
The net or resultant force depende on the direction we can easily understood the directions are opposite .Force is vector so if vectors are opposite we difference the two vectors.
10N-7N=3N
A dogs ability to sit and roll over on command is an instinct. True or false
Answer:
100% false
Explanation:
instinct is something they are born knowing how to do and sitting and rolling over is something you have to train them to do:)
During a titration a student found that 20.0cm3 of sodium carbonate solution
neutralised 27.9 cm3 of 0.500 mol/dm3 nitric acid solution.
Calculate the concentration of the sodium carbonate solution in mol/dm3. Give
your answer to 3 significant figures.
Answer: The concentration of [tex]Na_2CO_3[/tex] required is [tex]0.349mol/dm^3[/tex]
Explanation:
According to the neutralization law,
[tex]n_1M_1V_1=n_2M_2V_2[/tex]
where,
[tex]n_1[/tex] = basicity of [tex]HNO_3[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]HNO_3[/tex] solution = [tex]0.500 mol/dm^3[/tex]
[tex]V_1[/tex] = volume of [tex]HNO_3[/tex] solution = [tex]27.9cm^3[/tex]
[tex]n_2[/tex] = acidity of [tex]Na_2CO_3[/tex] = 2
[tex]M_1[/tex] = molarity of [tex]Na_2CO_3[/tex] solution =?
[tex]V_1[/tex] = volume of [tex]Na_2CO_3[/tex] solution = [tex]20.0cm^3[/tex]
Putting in the values we get:
[tex]1\times 0.500\times 27.9=2\times M_2\times 20.0[/tex]
[tex]M_2=0.349mol/dm^3[/tex]
Therefore, concentration of [tex]Na_2CO_3[/tex] required is [tex]0.349mol/dm^3[/tex]
how many Valance electrons does Bismuth have?
please help me. i'm doing a test
Answer:
5 valence electrons
Thus, bismuth would have 5 valence electrons
Explanation:
Hope it helps
Which type of prevailing wind would carry more water vapor (humidity)? (Choose one)
a. A global wind moving over the ocean
b. A global wind moving over land
Answer:
a. A global wind moving over the ocean
Explanation:
The surface water both north as well as
south of the equator do experience
upwelling. There is a rise of the nutrients to the surface . Ocean surface currents occur as a result of global wind as well as the shape of ocean basin and Coriolis effect
6. An acidic solution of potassium dichromate is mixed with an aqueous solution of
hydrogen peroxide.
True or False: if chemicals behave in a similar way they are grouped together on the periodic table
Answer:
Explanation: it is true
Which is an example of a physical change?
gasoline combusting
cake baking
salt dissolving
iron rusting
Answer:
salt dissolving
Explanation:
Hope this helps!