Answer
b b b b b b b b b b b b b b b
Explanation:
Please help. Very Confused. No links and need explanation please!
Label the highlighted substance with the term that best describes its behavior.
Answer Choices:
Arrhenius Acid Only
Arrhenius Base Only
Bronsted Lowry Acid Only
Bronsted Lowry Base Only
Both Arrhenius Acid and Bronsted Lowry Acid
Both Arrhenius Base and Bronsted Lowry Base
Answer:
Both Arrhenius Base and Bronsted Lowry Base
Both Arrhenius Acid and Bronsted Lowry Acid
Arrhenius Acid Only
Arrhenius Base Only
Bronsted Lowry Acid Only
Bronsted Lowry Base Only
Explanation:
The specific heat capacity of concrete is 0.880 J/g °C
Calculate the heat added to 3 g of concrete if the temperature increased by 0.64 °C
Use the equation q=mcT
If you can please show work thanks
Answer:
this is a required answer. look it once.
How many hydrogen atoms are found in the
hydrate (NH4)3PO4.5H2O?
Answer:
22
Explanation:
3x4+ 5x2
!
Hormones keep our bodies in a state of
balance known as
(a)metabolism
(b)homeostasis
Does anyone have Chem2 Test please, I really need it!
Answer:
whick level are u on
I am not faking an answer but I cann arrange it to u if possible
2NO(g) + 5H2(g) ⟶ 2NH3(g) + 2H2O(g)If 45.4 grams of NO and 12.1 grams of H2 react, what is the largest amount of ammonia that can be formed? The final answer should be reported to one place after the decimal point
Answer:
25.8g of NH3 can be formed
Explanation:
To solve this question we must convert the mass of each reactant to moles using molar mass. With the chemical equation we can find limiting reactant. The moles of limiting reactant are used yo find the moles of ammonia produced and its mass:
Moles NO -30.01g/mol-
45.4g * (1mol / 30.01g) = 1.51 moles
Moles H2 -Molar mass: 2.01g/mol-
12.1g * (1mol / 2.01g) = 6.02 moles
For a complete reaction of 6.02 moles of H2 are needed:
6.02mol H2 * (2mol NO / 5mol H2) = 2.41 moles NO are needed
As there are just 1.51 moles, NO is limiting reactant
Moles NH3:
1.51 moles NO * (2mol NH3 / 2mol NO) = 1.51 moles NH3
Mass NH3 -Molar mass: 17.031g/mol-
1.51 moles NH3 * (17.031g / mol) =
25.8g of NH3 can be formedBelow is a diagram showing the chemical energy (Ech) for the formation of water. Is the reaction exothermic or endothermic?
Answer: exothermic
Explanation: chemical reactions that release energy is called exothermic, and in this case, more energy is being released. (I THINK)
The reaction shown in the picture is exothermic reaction.
What is exothermic reaction?The exothermic reaction leads to the release of energy. This energy is often higher than the combined energy of the reactants.
It can be understood that the net amount of energy required to initiate an exothermic reaction is less than the net amount of energy released by the reaction. When a calorimeter, a device used to measure the heat released by a chemical reaction, the net amount of heat energy that flows through the device is equal to the negative of the total energy change of the system.
In the picture, first reactants had high energy and after the formation of the product the energy decreases.
The nuclear fission of one atom of uranium-235 releases more than 2.5 million times the energy that is produced from the combustion of coal.
The fission of one atom can cause a chain reaction in which the neutron from the fission of one uranium-235 atom can strike another atom, leading to its nuclear fission.
Therefore, The reaction shown in the picture is exothermic reaction.
Learn more about exothermic reaction, here:
https://brainly.com/question/10373907
#SPJ2
What is the energy transformation from wind to usable energy
Answer:
A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion.
Explanation:
Some forms of vitamin D, C₂₈H₄₄O, can be found in red meat. How many total atoms are in 5 molecules of C₂₈H₄₄O
Answer:
3.01 × 10^24 atoms of vitamin D
Explanation:
The number of atoms, molecules or ions present in a substance is given by the Avogadro's number which is 6.02 × 10^23.
Hence;
1 molecule of vitamin D contains 6.02 ×10^23 atoms
5 molecules of vitamin D contains 5 × 6.02 ×10^23/1
= 3.01 × 10^24 atoms of vitamin D
how are the environment of a desert and a tundra different
A: A tundra is at a higher latitude than a desert
B: A tundra is less humid than a desert
C: A tundra is much humid than a desert
D: A tundra receives less precipitation than a desert
<FIRST ANSWER>
The answer is A; tundra is at a higher latitude than a desert
Explanation:
Both a tundra and a desert are very dry, so that eliminates B and C.
And as for D, Tundra receives more rain than a desert does, so that eliminates D.
Write a balanced nuclear equation for the alpha decay of titanium-45.
Explanation:
20984Po→20582Pb+42α
4520Ca→4521Sc+0-1e+00ν
Explanation:
The alpha decay of polonum-209, which consists of the emission of an alpha particle, will leave behind the atom of a different element.
Notice that the identity of the element changes after the decay. This means that you're dealing with a nuclear transmutation, a process that converts an atom of a given element into an atom of a different element.
Is 1 mole of Na equal or not equal to Avogadro's number?
Answer:
nooooo it is not equal to it
How does the number of reactants in a decomposition reaction compare with
the number of products?
A. The number of reactants may be greater than or less than the
number of products.
B. The number of reactants is the same as the number of products.
C. The number of reactants is less than the number of products.
D. The number of reactants is greater than the number of products.
The number of reactants is less than the number of products in a decomposition reaction.
What is a Decomposition reaction?This is the type of chemical reaction which involves a reactant being broken down into two or more products.
This means the number of product is always greater than the reactant which is why option C was chosen.
Read more about Decomposition reaction here https://brainly.com/question/1465225
#SPJ1
Identify one natural process that may cause sudden climate changes.
Answer:
Global Warming , Volcanic Eruption
Determine the density of 1 L of carbon tetrahydride gas at 19 C and 870 mmHg.
Answer:To calculate the molar mass, first calculate the number of moles of gas using the ideal gas equation. 1 atm. 750 mmHg. (1.00 L). 760 mmHg. 0.0306 mol. L atm.
Explanation:
What mass of water can be heated from 45°C to 70°C by the addition of 875 Joules?
Please I need this
Answer:
17000 joules.
Explanation:
Explanation:
With knowledge of the specific heat capacity of a substance, its mass, and the temperature change, we can convert this to the energy required for this temperature change using:
ΔH=mCΔT, where
ΔH=change in enthalpy (J)
m= mass of substance being heated (g) i.e. water in this question
C= specific heat capacity (J/g°C)
ΔT= change in temperature (°C)
We know mass=65g and ΔT=76°C−12°C=64°C
The specific heat capacity of water is 4.18J/g°C
Therefore, ΔH=65g⋅4.18Jg°C⋅64°C
=17388.8J
=17000J (2 significant figures)
Please help !!!Is this Lewis dot structure correct? Check whether each atom has an octet and whether the total electrons in the structure match the total valence
electrons of the elements. There MUST be a clear yes/no and some evidence of work in your answer
Answer:
The Lewis dot structure is not correct
Explanation:
Each atom ought to be surrounded by eight electrons or two electrons according to the octet rule. We now need to closely examine the structure to see if it fits into this description.
All the atoms in the molecule have the correct valence except the hydrogen which is directly attached to the oxygen.
The positive charge ought to mean that more than two bonds were formed between hydrogen and oxygen which is clearly not the case here.
Thus, the hydrogen atom attached directly to oxygen does not display the correct valence.
What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of bromine? Hint - consider the mass of both atoms of bromine in your calculation. A.43% B.87% C.13% D.63%
Answer:
B. 87%
Explanation:
First, we calculate the molecular mass of magnesium bromide (MgBr2) as follows;
MgBr2 = 24.3 + 79.9(2)
= 184.1g/mol
Since 1 atom of bromine contains 79.9g, then the mass of two atoms of bromine (Br2) is 79.9 × 2 = 159.8g
Hence, the percentage of bromine (Br2) in MgBr2 is calculated as follows:
% mass of Br2 = mass of Br2/ molecular mass of MgBr2 × 100
% mass of bromine = 159.8/184.1 × 100
% mass of bromine = 0.8680 × 100
% mass of bromine = 86.8%
Approximately, % mass of bromine is 87%
The Ideal Gas Law is as follows: PV = nRT.
Rearrange the equation for each variable.
P =
V=
n =
R=
T =
Answer:
p=nRT/V
v=nRT/P
n=PV/RT
t=PV/nR
In a titration of hydrobromic acid (HBr) against sodium hydroxide (NaOH), 22.20 mL of 0.150 M NaOH is required to neutralize 36.60 mL of HBr. Calculate the molarity of the HBr. M1V1=M2V2
Answer:
[HBr] = 0.0910 M
Explanation:
NaOH → Strong base
HBr → Strong acid.
This is a titration that involves a strong acid and a strong base, so the recaction is about acid base equilibrium.
Formula for titration in the equivalence point is:
mmoles of acid = mmoles of base
M . Volume of acid = M . volume of base
We replace data:
M . 36.60 mL = 0.150 M . 22.20 mL
M = (0.150 M . 22.20 mL) / 36.60 mL
M = 0.0910 mol/L
Pls answer ill give brainliest question in picture
Answer: A & D
Explanation:
The two main forces are temperature and salinity.
If 26.4 g of hydrogen, H2, is produced from 100.0 g of methane, CH4, reacting with excess water as shown, what is the percentage yield? CH4(g) + H2O(g) → CO(g) + 3H2(g)
Answer: Percent yield represents the ratio between what is experimentally obtained and what is theoretically calculated, multiplied by 100%.
% yield
=
actual yield
theoretical yield
⋅
100
%
So, let's say you want to do an experiment in the lab. You want to measure how much water is produced when 12.0 g of glucose (
C
6
H
12
O
6
) is burned with enough oxygen.
C
6
H
12
O
6
+
6
O
2
→
6
C
O
2
+
6
H
2
O
Since you have a
1
:
6
mole ratio between glucose and water, you can determine how much water you would get by
12.0
g glucose
⋅
1 mole glucose
180.0 g
⋅
6 moles of water
1 mole glucose
⋅
18.0 g
1 mole water
=
7.20
g
This represents your theoretical yield. If the percent yield is 100%, the actual yield will be equal to the theoretical yield. However, after you do the experiment you discover that only 6.50 g of water were produced.
Since less than what was calculated was actually produced, it means that the reaction's percent yield must be smaller than 100%. This is confirmed by
% yield
=
6.50 g
7.20 g
⋅
100
%
=
90.3
%
You can backtrack from here and find out how much glucose reacted
65.0 g of water
⋅
1 mole
18.0 g
⋅
1 mole glucose
6 moles water
⋅
180.0 g
1 mole glucose
=
10.8
g
So not all the glucose reacted, which means that oxygen was not sufficient for the reaction - it acted as a limiting reagent.
Explanation:
Drag the tiles to the boxes to form correct pairs.
Match each chemical reaction with the type of reaction that best describes it.
Answer:
The way I just figured it out myself and made another acc to put the answer on :/
Explanation:
Si se sabe que el bronce se forma con 60% de cobre y 40% de estaño¿cual sera la masa de cobre contenida en 200 gramos de bronce
Answer:
Mass of copper in 200 g bronze is 120 g.
Explanation:
If it is known that bronze is formed with 60% copper and 40% tin, what will be the mass of copper contained in 200 grams of bronze?
Percentage of copper in bronze = 60 %
Percentage of tin in bronze = 40 %
Mass of bronze = 200 grams
Mass of copper in bronze = 60 % of 200 g
= 0.6 x 200 = 120 grams
Mass of copper in 200 g bronze is 120 g.
Which of the following would eat a dead rabbit?
A)
carnivore
B)
scavenger
C)
herbivore
D)
omnivore
Answer:
Scavenger
Explanation:
Because scavengers feed on dead of decaying meat
Please help me, It's my last question :)
Imagine you have a 5L balloon that you would like to fit into a 3L container. The current temperature is 298 K. At what temperature would you need to change the system to allow the balloon to fit into the container? Show your work.
[tex]V_{1} = \text{5 L}[/tex]
[tex]T_{1} = \text{298 K}[/tex]
[tex]V_{2} = \text{3 L}[/tex]
Unknown:[tex]T_{2}[/tex]
Solution:[tex]\dfrac{V_{1}}{T_{1}} = \dfrac{V_{2}}{T_{2}}[/tex]
[tex]T_{2} = T_{1} \times \dfrac{V_{2}}{V_{1}}[/tex]
[tex]T_{2} = \text{298 K} \times \dfrac{\text{3 L}}{\text{5 L}}[/tex]
[tex]\boxed{T_{2} = \text{179 K}}[/tex]
[tex]\\[/tex]
#ChemistryIsLife
#ILoveYouShaina
What is the number of carbon atoms in a cycloalkyne with 8 hydrogen atoms
Answer:
4
Explanation:
C4H8
This chemical reaction follows the law of conservation of mass. CaO(s) + CO2(g) - CaCO3(s) How much CaCO, will be formed if 2.2 grams of CaO are used for this reaction? Assume there are enough reactants to complete the reaction. The final answer should be rounded to one place after the decimal point.
4.3 grams 2.2 grams 1.1 grams 3.9 grams
please answer quick!
Answer:
the answer is 1.1grams is the currect ans
According to the law of conservation of mass, 1.1 grams of calcium carbonate are formed if 2.2 grams of CaO are used for this reaction.
What is law of conservation of mass?According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .
Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.
Law needs to be modified in accordance with laws of quantum mechanics under the principle of mass and energy equivalence.This law was proposed by Antoine Lavoisier in the year 1789.If 56 g CaO gives 46.2 g calcium carbonate then 2.2 g CaO will give 2.2×46.2/56=1.1 g.
Learn more about law of conservation of mass, here:
https://brainly.com/question/28711001
#SPJ6
what is the product of the reaction between arsenic and oxygen
a. AsO
b. AsO2
c. As3O2
d.As2O3
Answer:
d
Explanation:
As + O2 -------->as2o3
Someone help me am i right or wrong
Answer:
You right!
Explanation:
Answer: Yes your right