Explanation:
The molar mass of a sulfur molecule (S8)= 256g
Answer:
The Sulfur molecule has eight sulfur atoms thus the molar mass will be eight times the mass of one sulfur atom.
The atomic mass of S: 32.065
Molar mass= 8*32
= 256u
Find the molarity of a 8.9M KOH solution if 76 ml of solution is diluted to 171 ml?
3.96m
20.03M
0.25m
3.96M
Heeeellllppppp meeee pls
Answer:
3.96 M
Explanation:
Step 1: Given data
Concentration of the concentrated solution (C₁): 8.9 MVolume of the concentrated solution (V₁): 76 mLConcentration of the diluted solution (C₂): ?Volume of the diluted solution (V₂): 171 mLStep 2: Calculate the concentration of the diluted solution
We can calculate the concentration of the diluted solution using the dilution rule.
C₁ × V₁ = C₂ × V₂
C₂ = C₁ × V₁/V₂
C₂ = 8.9 M × 76 mL/171 mL = 3.96 M
Calculate P[NO]eq, if P [NOCI]eq = 0.33 atm, P [C12]eq = 0.50 atm, and Kp = 1.9 x 10-2.
2 NOCI(g) = 2 NO(g) + C12(g)
Answer:
0.064 atm. that's the answer
Karl went to the doctor complaining of a sore throat. The doctor performed
a throat culture and determined that antibiotics were not necessary. The
doctor told her to drink tea, take ibuprofen, and rest. Which type of microorganism most likely caused Karl's sore throat?
a) bacteria
b) virus
c) parasite
d) fungi
Answer:
A
Explanation:
bc
What type of reaction is shown below?
A. hydration reaction
B.addition reaction
1. Goose
2.frog
3. Turkey
4.earthworm
Answer:
Goose
Explanation:
following yes on the key,
feather: yes -> swims
Swims: yes -> goose
The reaction 2KClO3(s) --> 2KCl(s) + 3O2(g) is a(n)
Group of answer choices
combustion reaction.
ionic reaction.
synthesis reaction.
decomposition reaction.
Answer:
decomposition reaction.
Explanation:
It is a decomposition reaction as potassium chlorate compound breaks to form potassium chloride and oxygen. This reaction requires heat as source of energy to break down the compound so it is endothermic in nature.
A sound wave has a frequency of 3250 Hz and a
wavelength of 0.1 m. What is its velocity? SHOW
YOUR WORK
help please!!
Answer:
c = 325.0 m/s.
Explanation:
Hello there!
In this case, since the frequency, velocity and wavelength are related via:
[tex]c=\lambda *f[/tex]
Whereas c is the velocity, lambda the wavelength and f the frequency. Thus, we plug in the given data to obtain:
[tex]c=3250s^{-1}*0.1m\\\\c=325.0m/s[/tex]
Best regards!
Which item is necessary to make an electromagnet?
how many atoms are in 4.90 mol of Al2O3
Answer:
12 g of 12C to three significant figures maybe?
Explanation:
tell if correct or not im sorry fi it isnt :c
The chemical equation, 2 Cr + 3 Fe(NO3)2 - 3 Fe + 2 Cr(NO3)3, is an
example of which type of reaction?*
Answer:
Single replacement reaction (aka single displacement reaction)
Explanation:
In a single replacement reaction, one element is substituted for another in a compound to create a new compound and a new element in the products. The general form is:
A + BC --> B + AC
In the case of this question, Cr and Fe "trade places."
How many atoms are in 294 g of copper?
Answer
2.1 x 10 ^23
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Hydrochloric acid is a ———— ?
A. Strong electrolyte
B. Weak electrolyte
C. Non-electrolyte
D.
E. Molecular compound
Answer:
A is the answer
Explanation:
Pls mark BRAINLIEST
The following table lists the speed of sound in various materials. Use this table to answer the question.
Substance Speed (m/s)
Glass 5,200
Aluminum 5,100
Iron 4,500
Copper 3,500
Salt water 1,530
Fresh water 1,500
Mercury 1,400
Hydrogen at 0°C 1,284
Ethyl Alcohol 1,125
Helium at 0°C 965
Air at 100°C 387
Air at 0°C 331
Oxygen at 0°C 316
Sound travels fastest in _____.
solids
liquids
cold gases
warm gases
Sound travels fastest through solids.
it would be cold gasses because of how air at 0 is faster then at 100
Science**
5) Which statement best states the relationship between mass and
gravitational attraction between two objects? *
The less mass an object has, the greater its gravitational force.
1.
In the periodic table, all the elements in the same column have similar
and
properties.
Answer:
same ammount of electrons
Explanation:
hope this helps:)
17.5 mL of 0.1000M NaOH was required to neutralize 25.0 mL of HCl. What was the molarity of the HCl?
Answer: The molarity of [tex]HCl[/tex] is 0.07 M
Explanation:
According to the neutralization law,
[tex]n_1M_1V_1=n_2M_2V_2[/tex]
where,
[tex]n_1[/tex] = basicity [tex]HCl[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]HCl[/tex] solution = ?
[tex]V_1[/tex] = volume of [tex]HCl[/tex] solution = 25.0 ml
[tex]n_2[/tex] = acidity of [tex]NaOH[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]NaOH[/tex] solution = 0.1000 M
[tex]V_1[/tex] = volume of [tex]NaOH[/tex] solution = 17.5 ml
Putting in the values we get:
[tex]1\times M_1\times 25.0=1\times 0.1000\times 17.5[/tex]
[tex]M_1=0.07M[/tex]
Therefore, molarity of [tex]HCl[/tex] is 0.07 M
How should this combustion reaction be balanced?
C5Hg + 02 → C02 + H2O
A. C5Hg + 502 → 5C02 + H2O
B. C5H9 +3.502 → 5CO2 + 8H20
C. C5Hg + 702 → 5CO2 + 4H20
D. C5Hg + 302 → CO2 + 4H20
Answer:
Answer is C. C5H8 + 7O2 -> 5CO2 + 4H2O
15. The equation which gives the
relationship between the cell potential
and the concentrations of the cell
components is called -- (a) Nernst
equation (b) likovicequation (c) Voltaic
equation (d) none of the above
Will give brainliest!!!!
Answer:
446 mmHg
Explanation:
From the question given above, the following data were obtained:
Total pressure (Pₜ) = 871 mmHg
Partial pressure of He (Pₐ) = 281 mmHg
Partial pressure of N₂ (P₆) = 144 mmHg
Partial pressure of O₂ (P꜀) =?
The partial pressure of O₂ can be obtained as follow:
Pₜ = Pₐ + P₆ + P꜀
871 = 281 + 144 + P꜀
871 = 425 + P꜀
Collect like terms
P꜀ = 871 – 425
P꜀ = 446 mmHg
Therefore, the partial pressure of O₂ in the mixture is 446 mmHg
Which rock type(s) could be transformed into sediment?
a: sedimentary rock
b. igneous rock
c. both rock types
d. neither rock types
Answer:
b!
Explanation:
Answer:
c - both rock types
Explanation:
when weathered and eroded they can become sediments!
Aside from direct harm, what secondary issue do invasive species present?
They may be able to eat all kinds of native organisms.
They may not have any predators.
They might damage the habitat that other organisms rely on.
They might introduce other organisms like viruses and bacteria.
Answer:
They may not have any predators.
Explanation:
Calculate the mass of 1 Mole of Copper(ii) sulfate pentahydrate
200 g CuSO₄ · 5H₂O
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableMolesCompoundsOrganic
Prefix rootsReactions
SaltsAnhydride SaltsHydratesStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[Given] 1 mol CuSO₄ · 5H₂O (Copper II sulfate pentahydrate)
Step 2: Identify Conversions
[PT] Molar Mass of Cu - 63.55 g/mol
[PT] Molar Mass of S - 32.07 g/mol
[PT] Molar Mass of O - 16.00 g/mol
[PT] Molar Mass of H - 1.01 g/mol
Molar Mass of CuSO₄ - 63.55 + 32.07 + 4(16.00) = 159.62 g/mol
Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol
Step 3: Convert
There is 5 moles of water added for every one mole of Copper II Sulfate present.
[DA] Set up: [tex]\displaystyle 1 \ mol \ CuSO_4(\frac{159.62 \ g \ CuSO_4}{1 \ mol \ CuSO_4}) + 5 \ mol \ H_2O(\frac{18.02 \ g \ H_2O}{1 \ mol \ H_2O})[/tex][DA] Multiply/Divide [Cancel out units]: [tex]\displaystyle 159.62 \ g \ CuSO_4 + 90.1 \ g \ H_2O[/tex][DA] Add: [tex]\displaystyle 249.72 \ g \ CuSO_4 \cdot 5H_2O[/tex]Step 4: Check
Follow sig fig rules and round. We are given 1 sig fig.
249.72 g CuSO₄ · 5H₂O ≈ 200 g CuSO₄ · 5H₂O
what voltage is required to move 2a through 20ω
Answer:
10 volts
Explanation:
V= P/I
V = 20/2 = 10 volts
Which is not synthetic polymer?
a) Teflon
b) PVC
c) Chitin
When drawing the Lewis structure of a molecule, start by determining the total number of available valence based on each element's ____________ Then, use the total number of electrons needed for each element to be stable, generally based on __________ to determine the _____________ by finding the difference between the number of needed and available electrons divided by two. Next, identify the central atom, which is the element with the ______________ other than hydrogen. Finally, arrange the number of bonds around the central atom to fulfill the stable number of electrons for each element.
Answer:
group number
the octet rule
total number of bonds
fewest valence electrons
Explanation:
When drawing the Lewis structure of a molecule, start by determining the total number of available valence based on each element's group number Then, use the total number of electrons needed for each element to be stable, generally based on the octet rule to determine the total number of bonds by finding the difference between the number of needed and available electrons divided by two. Next, identify the central atom, which is the element with the fewest valence electrons other than hydrogen. Finally, arrange the number of bonds around the central atom to fulfill the stable number of electrons for each element.
Dose Anabolic Reaction helps cells multiply and stay good condition
DO NOT JUST USE UP THE POINTS I WILL REPORT YOU
tell me if your from connexus please with your answer
A chemist working for Udensi industries wants to create a new ink for tattoos and cosmetics. Determine the theoretical yield of iron (ll) sulfide if the chemist uses 22.5 grams of iron ? Type of rxn : AD , SR, DR , D Type of calculation : mol to mol ; mol to mass ; mass to mols mass to mass Fe S8--> Fes
Answer:
35.36 g
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
8Fe + S₈ —> 8FeS
Next, we shall determine the mass of Fe that reacted and the mass of FeS produced from the balanced equation. This can be obtained as follow:
Molar mass of Fe = 56 g/mol
Mass of Fe from the balanced equation = 8 × 56 = 448 g
Molar mass of FeS = 56 + 32 = 88 g/mol
Mass of FeS from the balanced equation = 8 × 88 = 704 g
SUMMARY:
From the balanced equation above,
448 g of Fe reacted to produce 704 g of FeS.
Finally, we shall determine the theoretical yield of FeS as follow:
From the balanced equation above,
448 g of Fe reacted to produce 704 g of FeS.
Therefore, 22.5 g of Fe will react to produce = (22.5 × 704)/448 = 35.36 g of FeS.
Thus, the theoretical yield of FeS is 35.36 g
The reaction 2Mg(s) + O2(g) --> 2MgO(s) is a
Group of answer choices
double-replacement reaction.
decomposition reaction.
synthesis reaction.
single-replacement reaction.
Answer:
Double-Replacement Reaction
Explanation:
Mg is Oxidized, and O2 is the cause of the oxidation, hence the Oxidizing agent. That means that O2 is Reduced and Mg is the cause naming it the Reducing agent.
OIL - RIG Oxidation is Loss-Reduction is Gain
What is uranium classified as
Akali Metals, Akaline Metals, Metalloids, Halogen, Noble Gas, Transition Metal, Rare Earth Metal or Non-Metal?
SOMEONE PLEASE HELP I NEED THIS NOW PLEASE JUST THIS ONE QUESTION I DON’T KNOW
Answer:
uranium is classifide as actinide a chemical element atomic number 92 and is a solid at room temperature
Consider the following diagram of a chemical reaction.
A series of four increasingly more complex chemical structures. The first diagram shows that when heat is applied to R single bond O single bond O single bond R, it creates 2 R single bond O with 1 electron dot. The next structure brings in more complex structures and other atoms, such as H and C. This process continues until the final molecule has a long chain of six starting with R O and ending with C with a single electron dot. There are four single side chains, 3 P h and 1 H.
What is the product that is formed in this reaction?
a polymer
a monomer
an alkyl halide
a carboxylic acid
Answer:
The answer is A
Explanation:
on EDG 2021
Answer:A
Explanation: