Answer:
Because the number of neutrons is different, the mass number is different. Isotopes are written in two different ways. They can be written using their symbol with the mass number (to the upper left) and atomic number (to the lower left) or the isotope name is written with a dash and the mass number
Explanation:
I don't know the answer but I am sure this will help you out.
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
1. Goose
2.frog
3. Turkey
4.earthworm
Answer:
Goose
Explanation:
following yes on the key,
feather: yes -> swims
Swims: yes -> goose
Look at the electron-dot diagram. What type of bond would two sulfur atoms require to form a molecule?
single covalent bond
double covalent bond
triple covalent bond
quadruple covalent bond
Answer:
Double Covalent
Explanation:
When two of the same element combine it will always be a covalent bond between them and since sulfur has two lone electrons it will make a double bond between the two to have a full octect
can somebody please help me ! :(
Answer:
325
Explanation:
velocity = 3250 Hz x 0.1 m
Answer:
325
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
how many atoms in 2.25 mol of O2
Answer:
1 molecule of oxygen has 2 atoms.
So 2,25 molecules of oxygen have 2 x 2,25 atoms.
2 x 2,25 = 4,5 atoms
There are 4,5 atoms in 2,25 molecules oxygen.
If 0.25 moles of H2O are produced, then how many moles of oxygen gas were consumed?
Answer:
it doesn't the molces stay the same
Explanation:
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
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
give the symbols of the ions formed when sodium reacts with chlorine
Answer:
When a sodium atom transfers an electron to a chlorine atom, forming a sodium cation (Na+) and a chloride anion (Cl-), both ions have complete valence shells, and are energetically more stable.
There are 4.67 * 10 ^ 24 hydrogen gas molecules the react with 21.0 Liters of oxygen gas STP conditions to form water. How many grams of water will form? How many moles of the excess reactant will remain after the reaction is completed?
Answer:
I am almost done
Explanation:
21.0 L
↓
2H₂(g) + O₂(g) → 2H₂O(l)
↑
4.67 × 10²⁴ moles
[This is done so the equation is balanced and the reaction can occur]
[subscripts are the number of atoms, and the coefficients are the number of molecules]
______________
Since there are about 6.02 × 10²³ moles in one mol of a substance.
4.67 × 10²⁴ / 6.02 × 10²³ =
7.7547174437 mol.
Next, we must determine the grams per mole of each substance, this can be done with the periodic table.
Since hydrogen, and oxygen gas are diatomic, they will consist of two atoms each. So the atomic mass will be multiplied by 2 to get the molecular mass. Therefore H₂ will have a molecular mass of 1.00794 × 2 = 2.01588 g/mol.
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
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:
Which of the following hypotheses is incorrect?
A I UV light can damage the eyes, then UV light may be the cause of blindness.
B.
The length of the string has an effect on the time of the oscillation. As the length shortens, the time taken for one oscillation also decreases.
If the diffusion rate through a membrane is related to the molecular size, then smaller the molecule, the faster it will pass through a membrane.
D
Soft drinks are acidic because of the presence of citric acid and phosphoric acid.
Answer:
A
Explanation:
uv light doesn't cause permanent blindness rather causes a condition known as Photokeratitis.
photokeratitis is a painful condition caused by uv light to the eye.
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:
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
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
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!
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
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:)
what are genetic factors?
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!
what voltage is required to move 2a through 20ω
Answer:
10 volts
Explanation:
V= P/I
V = 20/2 = 10 volts
What is 0.00000005 in scientific notation, rounded to two significant figures?
Answer:
5×-10^8
That is the the scintific notation for 0.00000005
Answer=5×-10^8
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
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
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.
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.
I have ten moles of iron atoms in the reactant side of a reaction. Do I have enough information to determine how many moles of iron atoms I will have following the reaction? If so, how many moles of iron atoms will I have at the end of a reaction? If not, what else do I need to know?
Answer: You will have 10 iron moles
Explanation: This is due to the law of conservation of mass. The amount of atoms going in the reactant side of a reaction has to be equal to the amount of atoms in the product side
is it good to use alcl on the icy roads?