Answers
Related Questions
Which of the chemicals in the following chemical reaction is the base?
CH3OH + HF --> CH3COH2+ + F-
A.)CH3COH2+
B.)F-
C.)HF
D.)CH3OH
Answers
D) CH3OH
Base is chemical which have hydroxide ion. so CH3OH is base
A chemical reaction happens in three steps.
Step 1: A→B+C (fast)
Step 2: C→D+E (slow)
Step 3:D+A→F (fast)
What is the rate-determining step?
Steps 1 and 3
Steps 1 and 2
Steps 2 and 3
Step 3 only
Step 1 only
Step 2 only
Answers
✓ What kind of carbon storages would be the most affected by humans?
Answers
Answer: Burning fuels?
Explanation: I’m not very sure actually
How many grams of Fe2O3 are formed when 51.3 grams of iron, Fe, react completely with oxygen, O2? 4 Fe + 3 O2 --> 2 Fe2O3
Answers
The Fe is our limiting reactant here. First, convert the mass of Fe given to moles of Fe by dividing mass by the molar mass:
(51.3 g Fe)/(55.845 g/mol) = 0.9186 mol Fe.
According to the balanced equation, 2 moles of Fe2O3 are produced for every 4 moles of Fe that are consumed. In other words, half as many moles of Fe2O3 will be produced as there are Fe that react:
(0.9186 mol Fe)(2 mol Fe2O3/4 mol Fe) = 0.4593 mol Fe2O3.
Finally, convert the moles of Fe2O3 back to grams by multiplying by the molar mass of Fe2O3:
(0.4593 mol Fe2O3)(159.6882 g/mol) = 73.3 g Fe2O3.
So, 73.3 grams of Fe2O3 are formed.
A bag of Flavored Snacks contains 120 Calories per serving. How many Joules (J) are in one serving?
Answers
Answer:
502.08 J
Explanation:
1 cal is equal to 4.184 J so we simply do 120*4.184 to find the joules
the temperature above which Sodium Bicarbonate decompose
s to to give sodium carbonate
Answers
Answer:
176 degrees Fahrenheit
Explanation:
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Can someone pls help me?
Answers
Answer:
A) day and night
Explanation:
please mark brainliest, i need it for a new rank<33
Answer:
You answer is A
Explanation:
Without the earth rotating on its axis, we wouldn't have day or night because we will be stuck facing the sun or the moon forever.
11. Is this compound an acid or a base: H20?
both
base
neutral
acid
Answers
Answer:
Neutral
Explanation:
It has a pH of 7, so it is considered neutral, and neither an acid nor a base. This means it is a neutral!
Question
11. Is this compound an acid or a base: H20?
Answer: IT IS A BASE
A substance that accepts and H+ from water is considered a base. Both NH3 and H2O are amphoteric (they have H atoms that can be donated as H+ ions and thus act as acids and lone-pair electrons that can accept an H+ and thus act as bases). Thus, either NH3 or H2O can act as an acid or a base.
PLZ GIVE BRAINLIEST +THANKS :)
What is the volume, in liters, of 0.250 moles of carbon monoxide at STP?
WRITE THE FORMULAS FOR THE COMPOUNDS, NOT JUST THE NAMES. INCLUDE UNITS!
Answers
What is the method of harvesting trees where mature trees are left intact that
provide shelter to younger seedling trees called ?? It's for a crossword puzzle and the answer should be two words and together there should be 19 letters
Answers
how long will it take you to get to class 300 meters away if you go 0.5 m/s?
Answers
Answer:
600 seconds, or 10 minutes
Explanation:
300m/ 0.5m = 600s
Which of the following defines a strong acids/bases
a
They do not dissociate
b
They can deadlift a lot
c
They partially dissociate into ions in solution
d
They completely dissociate into ions in solution
Answers
Answer:
d .yes it is dissociate ions (hydrogen or hydroxide)completely
Explanation:
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In a metal crystal, describe the difference between “core electrons” and “valence electrons”
Answers
Answer:
Valence electrons occupy the outermost shell or highest energy level of an atom while core electrons are those occupying the innermost shell or lowest energy levels. This difference greatly influences the role of the two types of electrons in a chemical reaction.
Thermal energy always moves from ___ to ___
Answers
Answer:
hot to cold
Explanation:
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Answer:
higher to lower temp
Explanation:
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Ralph's friend invited him to attend a hard rock concert. Ralph did not want to go because he assumed other people who attended would be aggressive and unruly. Ralph's attitude is BEST described as an example of
prejudice
ambiguity
nonconformity
discrimination
impression formation
Answers
Answer:
Prejudice
Explanation:
Answer: your answer would be prejudice.
The properties of a substance are not affected by chemical reactions.
O True
O False
Answers
Answer:
False
Explanation:
Why do you think plants making their own tood is important for answering the Driving Question How Do Get the Energy to Do Things ?
Answers
Answer:
The basic food for all organisms is produced by green plants. In the process of food production, oxygen is released. This oxygen, which we obtain from the air we breathe, is essential to life. The only source of food and oxygen are plants; no animal alone can supply these.
Explanation:
True or False: Stoichiometry includes using ratios from balanced chemical equations to determine the amounts of reactants used or products made in a reaction.
Answers
Answer:
True
Explanation:
Stoichiometry is simply the ability to make predictions about any chemical reaction. Now, to make a correct prediction of the outcome of a chemical reaction, the equation definitely has to be balanced because for example mass, in every chemical equation, mass is conversed.
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In a lab, students measured the mass of an unknown metal to be 46.4 g. The metal sample releases 769 J when it is cooled from 101.0°C to 30,00 °C, the
metal is most likely
Lead
. Copper
Mercury
Silver
Answers
Answer:
I'm thinking cooper but not sure
what are items that are ferromagnetic material
Answers
Answer:
I'll give you three examples:
Iron
Cobalt
Nickel
Nuclear equation problem
Please answer asap no explanation needed
(Look at picture)
Answers
Answer:
answer is will be C) ok alright
How many grams of BaCl2 can be made from 6 moles of Ba?
Answers
Answer:
823.98
Explanation:
Since there is only one Ba per atom you simply times 1 by 6 to get the number of mols of Ba per atom, then you times this by the atomic mass of Ba on the periodic table
Describe a method to investigate how the temperature changes when different masses of ammonium nitrate are dissolved in water
Answers
Answer:
Endothermic and Exothermic Reactions
Endothermic and Exothermic ReactionsIn this experiment you are investigating whether dissolving ammonium nitrate in water is an endothermic or exothermic reaction. An endothermic reaction absorbs energy from its surroundings (heat), so the reaction gets colder.
Explanation:
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How many minutes are theretin 24 hours? (60 min = 1 hr)
Answers
Answer:
1440 Minutes
Explanation:
60 x 24
Study the reaction.
NH4+ + NO2– ⟶ N2 + 2H2O
The rate of this reaction is proportional to the concentration of ammonium (NH4+) and the concentration of nitrogen dioxide (NO2–).
What is the rate law of this reaction?
Rate = K[N2][H2O]2
Rate = K[NH4+]2
Rate = K[NH4+][NO2–]
Rate = K[NO2–]2
Answers
Answer:
Rate = K[NH4+][NO2–]
Explanation:
Hello there!
In this case, since rate laws include the concentration of the species contributing to the rate of a chemical reaction; this question asserts this reaction is proportional to the concentration of ammonium (NH4+) and the concentration of nitrogen dioxide (NO2–); therefore, the rate law must contain the concentration of both reactants, for that reason, the answer would be Rate = K[NH4+][NO2–] as it contains the concentration of the aforementioned species.
Regards!
Study the reaction and read the statement.
Xe+3F2→XeF6
The rate constant for this reaction is 0.025, and the reaction is second order in Xe and first order in F2.
What is the rate of the reaction if [Xe] is 0.25 M, and [F2] is 0.4 M?
4.0 × 10–^4
2.5 × 10–^3
1.5 × 10–^3
6.3 × 10–^4
Answers
Answer:
6.3 × 10–^4
Explanation:
Hello there!
In this case, since the rate laws are written in terms of the rate constant and the concentration of the species contributing to the rate of reaction, as this one is second order in Xe and first order in F2, the rate law would be:
[tex]r=k[Xe]^2[F_2][/tex]
Thus, by plugging in the rate constant and concentrations, we obtain:
[tex]r=(0.025\frac{1}{M^2*s} )(0.25M)^2(0.4M)\\\\r=6.3x10^{-4}M/s[/tex]
Best regards!
DESPERATE!!!!! What is the molar mass of an unknown gas that has a density of 2.29 g/L at a pressure of 0.75 atm and a temperature of 88. degrees Celsius?
Answers
Answer:
The molar mass of the gas is 90.4g/mol
Explanation:
To solve this question we have to use the equation:
d = PM / RT
Where d is density of the gas = 2.29g/L
P is pressure = 0.75atm
M is molar mass of the gas = ??
R is gas constant = 0.082atmL/molK
T is absolute temperature = 88°C + 273.15 = 361.15K
Solving for M:
dRT / P = M
2.29L*0.082atmL/molK*361.15K / 0.75atm = M
90.4g/mol = M
The molar mass of the gas is 90.4g/mol
How many moles are in 19.8 grams of Mg?
Answers
Answer:
0.814
Explanation:
A sample of hydrogen gas has a volume of 145 mL when measured at 44
degrees C and 1.47 atm. What volume would the hydrogen sample occupy
at STP?
Answers
Answer:
[tex]186.01\ \text{mL}[/tex]
Explanation:
[tex]P_1[/tex] = Initial pressure = 1.47 atm
[tex]P_2[/tex] = Final pressure = [tex]10^5\ \text{Pa}[/tex]
[tex]T_1[/tex] = Initial temperature = [tex]44^{\circ}\text{C}[/tex]
[tex]T_2[/tex] = Final temperature = [tex]273.15\ \text{K}[/tex]
[tex]V_1[/tex] = Initial volume = 145 mL
[tex]V_2[/tex] = Final volume
We have the relation
[tex]\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow V_2=\dfrac{P_1V_1T_2}{T_1P_2}\\\Rightarrow V_2=\dfrac{1.47\times 101325\times 145\times 273.15}{(44+273.15)\times 10^5}\\\Rightarrow V_2=186.01\ \text{mL}[/tex]
Final volume of the sample is [tex]186.01\ \text{mL}[/tex].
U will be marked as Brainliest if u solve ex 1 only
Answers
Answer:
You can look at the charge of the molecule.
mg has a +1 charge so the oxidation numbrr for Mg = +1.
For Fe2O3 the total charge is 0. This means the charges of the Fe and the O needs to be equal. O has an oxidation number of -2. You got O3 so 3 x -2 = -6. You got Fe2 so -6 / 2 = -3. Oxidation number of O = -2 and for Fe = -3.
The if you go to the rightbof the reaction you got 3 MgO. O had an oxidation number of -2. The total charge of the molecule is 0 zero, so Mg should be +2.
Mg on the left of the equation has a oxidation number of +1, and on the right +2. The number changed, so it's a redox reaction.