Answer:
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ИЛИ НАПИШИ
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K2SO4 (aq) + NaOH (aq)
Answer:
K₂SO₄(aq) + 2NaOH(aq) → Na₂SO₄(aq) + 2KOH(aq)
Explanation:
The type of reaction is Double Displacement (Metathesis)
I’m kinda stuck with this part of the paper
Answer:
oK so pay pattention to the fractions
Explanation:
What volume will 2.0 moles of nitrogen occupy at 0.947 atm and 20.0 °C?
Answer:
V = 50.77 L
Explanation:
Given that,
No. of moles, n = 2
Pressure, P = 0.947 atm
Temperature, T = 20°C = 293 K
We need to find the volume occupies by Nitrogen gas. Using gas law,
[tex]PV=nRT\\\\V=\dfrac{nRT}{P}[/tex]
Where
R is gas constant
Put all the values,
[tex]V=\dfrac{2\times 0.08205\times 293}{0.947}\\\\V=50.77\ L[/tex]
So, the volume occupied by the gas is equal to 50.77 L.
Find A in degrees. Round to the
nearest tenth.
С
a = 7
b
b = 4
a
C = 8
B
A
С
A = [?]
Answer:
61 degrees
Explanation:
Why were scientists unsure about the last common ancestor between apes and humans?
Answer:
Scientists were unsure about the last common ancestor between apes and humans because fossils are so scarce, researchers do not know what the last common ancestors of living apes and humans looked like or where they originated.
Explanation:
is the compound Fed3 ionic or covalent
The complete question is: Is the compound [tex]FeCl_{3}[/tex] ionic or covalent ?
Answer: Compound [tex]FeCl_{3}[/tex] is an ionic in nature.
Explanation:
When a metal atom combines with a non-metal atom then transfer of electrons take place from metal towards the non-metal. As a result, an ionic bond is formed between the atom and compound formed is called an ionic compound.
For example, [tex]FeCl_{3}[/tex] compound contains Fe atom which is a metal and Cl atom which is a non-metal. Hence, electrons will be transferred from Fe atom to the Cl atom forming an ionic bond.
Hence, [tex]FeCl_{3}[/tex] is an ionic compound.
Thus, we can conclude that [tex]FeCl_{3}[/tex] is an ionic compound.
How many moles of NH3 can be made from 0.93 moles N2?
0.62 mol NH3
1.86 mol NH3
0.93 mol NH3
0.47 mol NH3
How many hydrogens are in 4H207?
Li2O + MgCl2 → 2 LiCl + MgO
What type of reaction is going on in this equation.
Answer:
water
Explanation:
help pls it's about cells
If the student added larger drops to the pan, the
what?of the waves would increase.
Answer:
this makes no sense you arent gonna get help
Explanation:
Answer:
Amplitude
Explanation:
Im taking this test rn lol
Which of the following is the weakest type of intermolecular
force?
o Hydrogen bonding
o Induced dipole
London dispersion
o Dipole-dipole
Answer:
London Dispersion
When an object is pushed by a force and moves in the direction of the force, work is done on the object. The amount of work equals the force times the distance (W = Fd). A small particle is pushed by a force of 2.6 × 10-4 newtons over a distance of 3.7 × 10-3 meters. How much work was done on the particle? Express the answer to the correct number of significant figures and in proper scientific notation. The force did × 10 newton-meters of work on the particle.
Explanation:
[tex]workdone = force \times distance \\ W = (2.6 \times {10}^{ - 4} ) \times (3.7 \times {10}^{ - 3} ) \\ W = 9.62 \times {10}^{ - 7} \: joules[/tex]
The formula W = Fd, where W is the amount of work done, F is the force, and d is the distance, is used to determine how much work is done on a particle when it is pushed by a force. The force and distance in this issue are 2.6 10-4 newtons and 3.7 10-3 metres, respectively.
What is the way to calculate the work done ?We add the force and distance together to determine the work done: 9.62 10-7 newton-meters are equal to W = 2.6 10-4 newtons x 3.7 10-3 metres. The response must be presented using the appropriate scientific notation and significant numbers.
The solution should include three significant figures, just like the numbers in the problem, which have three. Therefore, 9.62 10-7 newton-meters is the correct answer.
This response uses appropriate scientific language.notation because the exponent is a negative power of 10 and the coefficient ranges from 1 to 10. In conclusion, the particle underwent work from the force of 9.62 10-7 newton-meters. This response uses the appropriate scientific notation and the correct number of significant digits.
Learn more about force at:
https://brainly.com/question/13191643
#SPJ3
Which of the clouds shown would indicate a possible future rain storm?
A) A
B) B
C) C
D) D
is 8Ag2S → 16Ag + 1S8 a single replacement
help me with my bell work
Answer:
1) It gets slower the farther out they are.
2) The farther out you are from the sun the less gravitational pull you have, which makes it go slower as it orbits.
3) Gravity ;) :)
Explanation:
Hope this helps! Plz mark as brainliest! :)
1.) The four inner planets have slower orbits and the four outer planets have faster orbits.
2.) The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves.
3.) Gravity
At the same conditions of temperature and pressure, 5.0 dm^3 of a gas of molecular formula C_2 H_2, has a mass of 15 g, while 1.0 dm^3 of gas D has a mass of 1.4 g. What is the molar mass of gas D?
Underscore means subscript but I can't get the equation thingy to work. So it's meant to be C(subscript 2)H(subscript 2)
Answer:
12 g/mol
Explanation:
From Avogadro's law;
V1/n1 = V2/n2
V1 = 5.0 dm^3
n1 = 15 g/26 g/mol = 0.6 moles
V2 = 1.0 dm^3
n2 = ?
V1n2 = V2n1
n2 = V2n1/V1
n2 = 1 * 0.6/5
n2 = 0.12 moles
Molar mass= mass of gas D/number of moles of gas D
Molar mass= 1.4 g/0.12 moles
Molar mass= 12 g/mol
how is melting similar to freezing
Answer:
no similarities but if that's so it's temperature
1. A cupcake show makes and delivers specialized cupcakes. It will cost someone $30 for
10 cupcakes and $67.50 for 25 cupcakes. This total includes the cost per cupcake and
delivery fee. How much does each cupcake cost? (enter your answer with just the number,
no $ sign)
Answer:
2.5
Explanation:
The given costs for the purchase and delivery of the cupcakes are;
The cost of 10 cupcakes and the delivery fee = $30
The cost of 25 cupcakes and the delivery fee = $67.50
Let 'c' represent the fixed cost of delivery of the cup cakes, and let 'x' represent the cost of each cup cake, we have;
30 = 10·x + c...(1)
67.50 = 25·x + c...(2)
Subtracting equation (1) from equation (2) gives;
67.50 - 30 = 37.50 = 25·x - 10·x + c - c = 15·x
∴ x = 37.50/15 = 2.5
The cost of each cupcake, x = 2.5
(∴ The delivery fee = 30 - 10 × 2.5 = 5)
The cost of each cupcake is 2.5.
Which of the following examples best illustrates an effect of pollution on an ecosystem?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Cutting down a forest for lumber removes available habitat for local animals, forcing them to move or compete for remaining resources.
(Choice B)
B
The number of wolves in an area declines due to urbanization and hunting, allowing elk and deer populations to grow rapidly.
(Choice C)
C
Nitrogen and phosphorus runoff from agricultural fields creates harmful algal blooms and dead zones in the ocean.
Which physical property causes cork to float on top of water?
Cat added a sample of sodium hydroxide to water and
determined the pH to be 12. What is the pOH of the solution?
pOH =
Answer: 2
Bc when you subtract 12 from 14 you get 2
The pH of a solution is 2.55. What is the [H3O+]?
Answer:
[H₃O⁺] ≈ 0.00282 M
General Formulas and Concepts:
Acid/Base Equilibria
Bronsted Acid/Bronsted Base
pH Formula: pH = -log[H₃O⁺]
[H₃O⁺] Formula: [tex]\displaystyle [H_3O^+] = 10^{-pH}[/tex]
Explanation:
Step 1: Define
pH = 2.55 (Acidic)
Step 2: Solve
Substitute in pH [Molar Concentration Formula]: [tex]\displaystyle [H_3O^+] = 10^{-2.55}[/tex]Evaluate exponent: [tex]\displaystyle [H_3O^+] = 0.002818[/tex]Step 3: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.002818 M ≈ 0.00282 M
Convert particles to moles: 8.3 x 10^20 atoms Cu
Answer:
[tex]\boxed {\boxed {\sf 0.0014 \ mol \ Cu}}[/tex]
Explanation:
We are asked to convert particles to moles.
1. Avogadro's Number1 mole of any substance contains the same number of particles (atoms, molecules, formula units). This is Avogadro's Number or 6.022*10²³.
In this problem, the particles are atoms of copper. So, 1 mole of copper contains 6.022*10²³ atoms of copper
2. Convert Atoms to MolesUse Avogadro's Number to make a ratio.
[tex]\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} \ atoms \ Cu}[/tex]
We are trying to convert 8.3*10²⁰ atoms of copper to moles, so we multiply that value by the ratio.
[tex]8.3*10^{20} \ atoms \ Cu*\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} \ atoms \ Cu}[/tex]
The units of "atoms Cu" will cancel.
[tex]8.3*10^{20}\frac{ 1 \ mol \ Cu}{ 6.022*10^{23} }[/tex]
Condense the expression into 1 fraction.
[tex]\frac{8.3 *10^{20}}{ 6.022*10^{23} } \ mol \ Cu[/tex]
[tex]0.001378279641 \ mol \ Cu[/tex]
3. RoundThe original measurement of atoms has 2 significant figures, so our answer must have the same. For the number we calculated that is the ten-thousandths place.
0.001378279641The 7 in the hundredth thousandth place tells us to round the 3 up to a 4.
[tex]0.0014 \ mol \ Cu[/tex]
8.3*10²⁰ atoms of copper are equal to 0.0014 moles of copper.
Which molecule is a stereoisomer of trans-2-pentene?
Answer:
cis-2-pentene
Explanation : The stereoisomers are the compound which differs only in the spatial arrangement of the atoms across the stereogenic centers.
There are mainly two forms of stereoisomers cis and trans. Cis-isomers are those where the two bulky or functional groups are arranged on the same side across the stereogenic center; whereas, in trans-isomers the two bulky groups or functional groups are arranged in the opposite sides of stereogenic center.
pls I need this fast.
Write and overall equation for the acid-base reaction that would be required to produce each of the following salt : NaCI
Explanation:
HCl(aq)+ NaOH(aq)→NaCl(aq)+H2O(l) ..
A 2.50 L balloon is filled with water at 2.27 atm. If the balloon is squeezed into a 0.80 L beaker and does NOT burst, what is the pressure of water in the balloon?
Answer:
[tex]P_2=7.09atm[/tex]
Explanation:
Hello!
In this case, given the change in volume and pressure of the gas, it is possible for us to recall the Boyle's law as way to understand the inversely proportional relationship between pressure and volume:
[tex]P_1V_1=P_2V_2[/tex]
Thus, when solving for the final pressure, P2, given the initial pressure and volume and the final volume, we obtain:
[tex]P_2=\frac{P_1V_1}{V_2}\\\\P_2=\frac{2.27atm*2.50L}{0.80L}\\\\P_2=7.09atm[/tex]
Best regards!
Answer:
7.1 atm
Using Boyle’s law, P1 V1=P2 V2.
A surfact that DOES NOT allow water to pass through.
Answer:
impermeable
Explanation:
Answer:
aquifer?
Explanation:
What is the molarity of a 0.4 liter solution containing 1.6 moles of NaCl?
Answer:
4 M
Explanation:
Molarity refers to the molar concentration of a substance (solution). It can be calculated by using the formula below:
Molarity (M) = number of moles (n) ÷ volume (V)
According to the information provided in this question;
V = 0.4 liter
n = 1.6 moles
Molarity = n/V
Molarity = 1.6/0.4
Molarity = 4 M
PLEASE HELPP MEEE ASAPPPPP
Answer:
2. Solute
3. Suspension
4. Colloid
5. Compound
Explanation: