Answer:
2K + 2H2O → 2KOH + H2
So Hydrogen is more reactive than pottasium .
According to law of conservation of matter, 2 moles of potassium react with water to produce 1 mole of hydrogen gas.So, 2 moles of potassium produce 1 mole of hydrogen gas.Answer:
A
Explanation:
Hydrogen is more reactive than potassium.
Describe the factors that can be used to predict whether or not a nuclide is stable.
What is epoxy?
....................
Answer:
1. any class of adhesives, plastics, or other materials that are polymers of epoxies.
2. something like glue or resin
Explanation:
that's the dictionary definition of epoxy.
The equations ? It’s for a chemistry class, and he said we need to explain and write down the math problems?
Answer:
I think this is because math and chemistry go together and the math problems are science related.
Explanation:
How are all atoms of silver alike, but different from atoms of other elements?
A. All atoms of silver have the same mass.
B. All atoms of silver have the same atomic number,
C. All atoms of silver have the same number of neutrons.
D. All atoms of silver have the same number of subatomic particles.
B. All atoms of silver have the same atomic number but different numbers of neutrons in the nucleus.
Is the formation of sulfur tetrafluoride monoxide endothermic or exothermic?
endothermic means it absorbs energy while exothermic means it releases energy. remember this.
LAST ATTEMPT! Covalent compound naming !
Answer:sad
Explanation:
haaaaan not
1.
How many moles of NaCl are in 1.5L of 0.25 M solution?
Answer:
0.375 moles
Explanation:
no of moles =vol×molarity
Need Help ASAPPPP!!!!
Answer: For number 8. I think only one if not i'm so sorry also you would need 143. 0914
Explanation:
Answer:
Hello! :p
6.022 × 10^{23} atoms of copper. 143.09 g/molI hope this helps! Thank you so much! :)
[H+]=1×10−13 M pH=
what is this answeer
Answer:
Take the -logarithm of the concentration of hydrogen ions that are in the solution:
pH=−log(1×10−8M)=8.❤
can y’all please help me answer?
Answer:
It really depends on the situation. If you have 1000 elk and 2 wolves, they really would play a better role in killing off elk so that the elk population doesn't get over populated and diseased, causing a major population collapse. But if there were only 10 elk and 50 wolves, the wolves would play a very negative role on the population.
Hope this helps!
Explanation:
What is the empirical formula for a compound that is comprised of 54.0% sodium, 8.50% boron, and 37.5% oxygen by mass
Answer:
Sodium metaborate: sodium+boron+oxygen= NaBO 2.
The formula can be written also as Na 2O·B
Explanation:
is H2O polar or non polar?
Answer:
Explanation:
H2O is a polar molecule
Answer:
polar covalent molecule
Explanation:
the unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that water has two pole a positive and a negative.
Calculate the mass of diphosphorus pentoxide (P,05) that contains a trillion (1.000 x 10^2) phosphorus atoms. Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.
Answer: The answer is 94.25 × 10¯¹² g.
The ___ variable responds to the __ variable and goes on the Y-axis.
1. Dependent, Independent
2. Independent, Dependent
3. Control, Constant
4. Constant, Control
Answer: 1. Dependent, Independent The dependent variable responds to the independent variable and goes on the Y-axis.
Explanation: The independent variable is controlled or manipulated by the experimenter. For example, someone's age might be an independent variable. Other factors (such as what they eat, how much they go to school, how much television they watch) aren't going to change a person's age.The dependent variable is what you are measuring. For example, a test score could be a dependent variable because it could change depending on several factors such as how much you studied, how much sleep you got the night before you took the test, or even how hungry you were when you took it.
How that helps. :)
The dependent variable responds to the independent variable and goes on the Y-axis. Therefore, option A is correct.
What is dependent variable ?In mathematical modeling, statistical modeling, and experimental sciences, there are dependent and independent variables. Dependent variables are so-called because, during an experiment, their values are examined on the assumption or presumption that they are governed by the values of other variables.
the dependent variable on other measurable variables As a result of an experimental manipulation of the independent variable or variables, these variables should change.
What you track in the experiment and what is impacted by it are both considered dependent variables. The independent variable affects the dependent variable's behavior. Because it "depends" on the independent variable, it is known as a dependent variable.
Thus, option A is correct.
To learn more about the dependent variable, follow the link;
https://brainly.com/question/1479694
#SPJ2
What law of motion corresponds with this statement?
"A rifle kicks."
first law
third law
second law
Answer:
3rd lawl
Explanation:
a rifle kick is when you fire a projectile and you feel a force pushing against your hand. Rifles normally have heavier projectiles so there is more force pushing back against you. example, if you were sitting on a spinny chair with wheeles and your friend is sitting on another, and you push each other while on the chair, you will both go backward, but the lighter person will go back more. for every action, there is an equal and opposite reaction
that is the third law, also said as: "When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body."
(QUICK)
What is the percent yield if the actual yield is 1.5g and the theoretical yield is 4.5g?
Answer:
33.3% (depending on how many significant figures you need)
Explanation:
Actual yield divided by theoretical yield times 100%
a sample of glucose contains 1.250x10^21 carbon atoms, how many atoms of hydrogen does it contain?
Answer:
Hydrogen = 2.5 * 10^21
Explanation:
Chemical Formula Glucose: C₆H₁₂O₆
One of the ways you could do this is to notice that for every carbon atom there are two Hydrogen atoms. You can state this more formally by using the formula to set up a ratio: 12/6 = hydrogen to Carbon
So if there are 1.250 * 10^21 Carbon atoms in the Glucose sample, then there will be twice as many hydrogen atoms.
H = 2 * 1.25 * 10^21 = 2.5 * 10^21 atoms
You could do this more formally by setting up a proportion.
6 Carbon / 12 Hydrogen = 1.25*10^21 / x Cross Multiply
6*x = 12 * 1.25*10^21 Combine the right
6x = 1.5 * 10^22 Divide by 6
x = 2.5 * 10^21
what is meaning of coordination bond?
Answer:
Coordinate-bond meaning
A type of covalent bond in which both the shared electrons are contributed by one of the two atoms. ... The definition of a coordinate bond is a chemical bond between two atoms when one of the atoms shares a pair of electrons.
Explanation:
Explanation:
is a covalent bond in the sharing of electron pair equally between two atoms in which each atom contribute an electron.
it is form when atomic orbitals of atoms each containing an unpaired electron overlap to share the pair of electrons.
1. Before starting, make a prediction: If substances B and C are both in the gas phase and are at the same energy level, which of the two substances will need to have more energy transferred out in order to change to the liquid phase? Substance B or substance C? Explain your answer.
Answer:
Substance C
Explanation:
Substance C would be the answer because Substance C has a lower attraction level. Because of this, it takes more energy to take out of in order to become a liquid.
The Universal Space Agency wants to know the results of your Sim investigation. Write your report to the lead chemist, explaining why drops of liquid water appeared on the outside of the cold, but not the warm, soda can. Use evidence from your investigation in your explanation.
Answer:
due to warm temperature
Explanation:
Explanation:
There is water present in liquid form instead of liquid nitrogen on the outer side of the can because of the temperature present in the surrounding environment. The temperature around the can is little warm which is favourable for the water but not for the liquid nitrogen. The liquid nitrogen present in liquid state when the temperature of the surrounding is too cold. if it is warm, the liquid nitrogen starts boiling and converts into gaseous state so that's why the warmer temperature is responsible for the presence of water not the liquid nitrogen.
How many atoms are in 25.0 grams of carbon?
mol = 25/12
= 2.083 mol
1 mol = 6.02 × 10^23 atoms
2.083 mol = X
X = 2.083/1 × 6.02 × 10^23
= 1.254 × 10^24 atoms
help pls very simple
How abundant is Polonium in the earth's crust?
Even in pitchblende, polonium is exceedingly rare: 1,000 tons of ore must be treated to yield 40 milligrams of polonium. It has a one-part-in-ten-thousandth-thousandth-thousandth-thousandth-thousandth-thousandth It is found in nature as a byproduct of the radioactive decay of uranium, thorium, and actinium.
Atomic Number: 210
A 38-kilogram child roller skates on a circular track with a radius of 24 m. Her velocity is 6.0 m/s. What centripetal force does she experience?
580 N
0.16 N
57 N
0.38 N
What would happen if hydrogen chloride gas is bubbled through a solution of lead (II) nitrate? Explain
A white precipitate of silver chloride will be formed when Hydrogen chloride gas is passed through silver nitrate.
A white precipitate of silver chloride will be formed when Hydrogen chloride gas is passed through silver nitrate.2HCl+2AgNO³
→2AgCl+2HNO³
The reaction between AgCl and NH4OH will result in the products of Ag(NH3) 2+and Cl - ions .
AgCl+2NH 4OH→Ag(NH3) ²Cl+HH²O
11) What volume will 0.75 mol of Oxygen gas (O2) occupy at 298 K and a pressure of 52.7 kPa?
Answer:
Volume = 35.3L
Explanation:
Use Ideal Gas Law (PV=nRT) and isolate for V (volume) by dividing both sides by P (pressure). You will then get the eqaution listed below and you can solve by using the method I used below.
V = nRT/P
V = (0.75kPa)(8.314)(298K)/(52.7kPa)
V = 1858.179/52.7
V = 35.3L
I want a pharmacist technician to help me with a question please
I'm a pharmacy dispenser which is the same thing. what's your question?
What is the empirical formula for C2H4S2?
Answer:
46
Explanation: ihjk
what is involved fashion of male and female gametes to form a zygote which develops into an embryo
NO LINKS!!!! 50 PTS!!!
What is a title name for Aerobic cellular respiration?
Answer:
try this
Explanation:
I searched it but I don't know