Answers
Answer:
i can't read it.. maybe upload a visible picture?
Related Questions
In the reaction shown, how many moles of HCl are needed to react with 2.4 moles of Al?
2 Al + 6 HCI - 2 AlCl3 + 3 H2
оа
7.2
Ob
6.4
Ос
0.8
d
1.3
е
4.8
Answers
Answer:
7.2 moles
Explanation:
Since the equation is balanced, we can use a mole ratio. 6 moles of HCl : 2 moles of Al. Thus, to convert, we simply multiply by 3.
Answer:
7.2 moles of HCl
Explanation:
The balanced reaction equation of the reaction is;
2 Al + 6 HCI ---------> 2 AlCl3 + 3 H2
We can see from the reaction equation that;
6 moles of HCl reacts with 2 moles of Al
Hence;
x moles of HCl reacts with 2.4 moles of Al
x = 6 * 2.4/2
x = 7.2 moles of HCl
If you try to place the compound on the pan over the flame, what could possibly happen? Explain your answer. [2 marks] anyone please help me!!:(
Answers
Answer:
it will probably flame up or explode or maybe start boiling
Need done fast please! 41 points
Heat energy provided during phase change is used to:
increase kinetic energy
break intermolecular bonds
break intramolecular bond
decrease kinetic energy
Answers
Answer:
I'm not exactly sure but I think it's the first one if I'm wrong tell me so I know and I don't know how I can get points back but if I can figure it out I will tell me if I'm wrong
What elements and molecules are used in the process of photosynthesis.
Answers
Answer: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Explanation:
Answer:
carbon dioxide + sun = sugar and o2
Explanation:
During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
hope that helps have a great day
Which statement best describes the polarity of the molecule Sil4?
Answers
Answer:
I dont a picture
Explanation:
but the answer is 24
What drives the flow of energy in cycling of matter in the atmosphere
Answers
3. Convert 273.0 g of lead into moles.
Answers
Answer:
1.3175675675675604
Explanation:
does this need to be rounded?
PLEASE HELP!!!!!!!! I DO NOT UNDERSTAND
Answers
Answer:
A, B, C
Explanation:
Explanation
A structure that contains a watery fluid which protects the embryo/fetus is 7 7 point
known as? *
chorion
amnion sac
uterus
cervix
Answers
Answer:
and unborn baby
Explanation:
an unborn baby
how many chemical bonds are in glucose?
Answers
Answer:
4 covalent bonds
Explanation:
Which of the following is the conjugate base of HPO42-?
Answers
Answer:
A. PO4^3-
Explanation:
took the quiz on a pex
The conjugate base of HPO₄²⁻ is PO₄³⁻. Therefore, option (A) is correct.
What is the Bronsted-Lowry concept?The Bronsted-Lowry concept can be explained as an acid-base reaction where base and acid react with each other and by an exchange of proton acid, forms its conjugate base and the base generates its conjugate acid.
The Bronsted-Lowry theory is an extended version of Arrhenius's theory of acid-base. According to this concept, acid can be defined as a substance that donates a hydrogen ion or a proton and produces its conjugate base and the base can be defined as a substance that accepts a proton and creates its conjugate acid.
Bronsted-Lowry acid in the dissociation form can be represented as:
Acid ⇄ Conjugate base + H⁺
The conjugate base of Bronsted-Lowry acid HPO₄²⁻ can be represented as follows:
HPO₄²⁻ ⇄ PO₄³⁻ + H⁺
Therefore, PO₄³⁻ is the conjugate base of the Bronsted-Lowry acid HPO₄²⁻.
Learn more about the Bronsted-Lowry concept, here:
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something that is made of all the same atoms or groups of atoms
Answers
Answer:
Substance-I just did this
Explanation:
Something that is made of all the same atoms or groups of atoms is called element. Atoms from at least one or maybe more elements.
What is element?A substance that's unable to be converted into another substance is known as an element. Each of the approximately 100 elements has a unique form of atom. Atoms from at least one or maybe more elements are present in everything in the cosmos.
All known elements are listed in the periodic table, with those with related properties being grouped together. The majority of elements are lustrous metals that are excellent conductors of electricity. Iron, gold, and aluminum are metals that are solid at ambient temperature.
Therefore, something that is made of all the same atoms or groups of atoms is called element.
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help me with this pleasee
Answers
Which element is more metallic among beriliyum or calcium? Give reason
Answers
I hope this helps!
2. Have you ever seen a natural event that surprised
you? Why was it surprising?
Answers
Answer:
I have seen many lightning storms before. However, one of the most surprising ones was when I was at my house. It was around midnight when I awoke from the sound of lightning in the distance. I was also half awake so this could be another reason this was the most surprising, but lightning struck near my area. i could see the light through my curtains and the sound was loud enough to awake everyone in my house, even the deep sleepers. I practically jumped out of bed.
A clownfish uses a sea anemone as a safe place to live. While living there, the clownfish lures in food for the anemone. This is an example of what type of relationship?
Answers
Obtaining crude oil for refining is an example of
A. Constructive occupation
B. Extractive occupation
C. Manufacturing occupation
D. Tertiary occupation
E. Service occupation
Answers
Answer:
B: extractive occupation
During the daytime, we can see things because the sun is giving off
heat energy
light energy
sound energy
electrical energy
Answers
Answer:
light energy
.................
Answer:
light energy
Explanation:
heat does not effect how we see
the sun does not have sound
electrical energy does not effect how we see
WDYT a mixture is? Please help
Answers
Answer:
A mixture is when two substances are physically combined and can be taken apart.
Explanation:
my words
A mixture of Oxygen and Hydrogen occupies a pressure of 101.3kPa. The pressure of Hydrogen is 56kpa. Calculate the pressure of oxygen.
Answers
Answer:
45.3 KPa
Explanation:
From the question given above, the following data were obtained:
Total pressure (Pₜ) = 101.3 KPa
Pressure of Hydrogen (Pₕ) = 56 KPa
Pressure of Oxygen (Pₒ) =?
The pressure of oxygen in the mixture can be obtained as follow:
Pₜ = Pₕ + Pₒ
101.3 = 56 + Pₒ
Collect like terms
101.3 – 56 = Pₒ
Pₒ = 45.3 KPa
Thus, the pressure of oxygen in the mixture is 45.3 KPa
1.0 mole of KCl(aq) is added to which solution to produce a precipitate?
A)
Lit
B)
Ca2+
Agt
D)
Zn2+
Answers
Answer:
Ag+
Explanation:
If you imagine as if the problem were double replacement, you would pair the Cl with one of the following ions provided in the choices. As seen on Table F, Ag+ paired with Cl- produces an insoluble compound, hence the precipitate. All the other ions shown in the multiple choice section, when paired with Cl- will produce a soluble compound, as a result NOT a precipitate.
7. A sample of helium gas occupies a volume of 24.6 L at 2.20 atm. What would its volume be at 3.50 atm?
Answer: 15.5L
Please show your work
Answers
so, here's your answer, 15.5L (appr)
1 poin
2) Iron is found in the Earth as iron
oxide (Fe203). Iron oxide is reduced
to produce iron. Balance the equation
for the reaction: ...Fe2O3 + ..... →
.....Fe + .....CO2
Your answer
Answers
duehrneidudbeneisubebekeidbdbbe
HELPP ILL GUVE YOU LOTS OF POINTS EVERYTHING U WANT I REALLY NEED HELP
Answers
Answer:
but what is your question? it's just like the moon going around earth while earth along with all the other planets revolve around the sun
Explanation:
which process helps guarantee that a species continues to involve over hundreds of years?
A. growth
B. nutrition
C. reproduction
Answers
Answer:
C. reproduction
Explanation:
I just got confessed to
but i only like the person 89% out of 100...
what should I do ?
Answers
Answer:
:)haha
Explanation:
Answer:
:D
Explanation:
For the autoionization of water at 25°C, H2O(l) <---> H+ (aq) + OH-(aq)
Kw is 1.0 X 10^-14. What is (Delta Gº) for the process?
Answers
Answer:
ΔG° = 80 Kj/mole
Explanation:
ΔG° = -R·T·ln(Kw)
R = 0.008314 Kj/mol·K
T = 25°C = 298K
Kw = 1 x 10⁻¹⁴
ΔG° = -R·T·ln(Kw) -(0.08314Kj/mol·K)(298K)ln(1 x 10⁻¹⁴)
= -(0.008314)(298)(-32.2)Kj/mole
= 79.78Kj/mole ≈ 80Kj/mole (1 sig.-fig.)
The change in free energy for the autoionization of water at 25°C is -79.9 KJ
Using the formula;
ΔG = -RTlnK
ΔG = change in free energy = ?
R = gas constant = 8.314 J/K/mol
T = temperature = 298 K
K = equilibrium constant = 1.0 X 10^-14
Substituting into the given formula as;
ΔG = - (8.314 J/K/mol × 298 K × ln(1.0 X 10^-14))
ΔG = -7.99 × 10^4 J/mol or -79.9 KJ/mol
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When an atom loses an electron, the resulting charge on the atom is ____
Answers
Answer:
Positive
Explanation:
The atom will gain a positive charge by losing an electron
Answer:
cation
Explanation:
When Na2O is mixed with Mn(NO3)4 it forms NaNO3 and MnO2. We start with 25.0 g
of sodium oxide and 56.1 g of manganese (IV) nitrate.
How many grams of sodium nitrate can be produced?
Answers
Which properties describe the elements in group 18?