Answer:
If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, ... If I contain 3.0 moles of gas in a container with a volume of 60. liters and at a ... Mixtures of helium and oxygen are used in scuba diving tanks to help prevent ... volume of 5.00 Lat 25.0C. Calculate the partial pressure of each gas and the ...
Explanation:
what should we use in soap making process:-
a) potassium hydroxide
b) sodium hydroxide (lye)
Explain why it should be used
Answer:
a) potassium hydroxide
Explanation:
Potassium Hydroxide is a type of lye specifically used to make liquid soap.
Sodium hydroxide(lye) is used to unclog drains.
Hope this helps plz hit the crown :D
The chemical equation S + 02 - S02 is an example of which type of reaction?
Single displacement
Combination
Double displacement
HELP ME PLEASE !!! I.D.K WHAT TO DO :((( Will mark brainliest please !!
Answer:
bri me jose my new account
Explanation:
Iron has a known density of 7.87 g/cm3. What would be the mass of a 2.5
cm3 piece of iron?
The amount of matter in an object is its
OA. Volum
OB. mass
Oc. density
OD. charge
The bond order is equal to the number of the bonding pairs of electrons in an
ionic bond.
OA. True
OB. False
Answer:
False
Explanation:
Just trust up I just did it
I need help on these 3 questions really fast
i’ll give brainliest!!!! QUICK
Answer:
10. The wavelength of the color red is 650 × 10⁻⁹ m
11. The frequency of the color red is approximately 4.6122 × 10¹⁴ Hertz
12. The corresponding energy is approximately 3.058 × 10⁻¹⁹ J
Explanation:
10. Given that the wavelength, λ, of the color red is 650 nm, and one nanometer, nm = 10⁻⁹ m, we have;
The wavelength of the color red = 650 × 10⁻⁹ m
11. The frequency, v, of the color red is obtained from the relation, v = c/λ
Where;
c = The speed of light = 299,792,458 m/s
∴ v = 299,792,458/(650 × 10⁻⁹) ≈ 4.6122 × 10¹⁴ Hertz
12. Given that energy emitted by light, E = h × v, where E = 6.63 × 10⁻³⁴ J/s, we have;
E = 6.63 × 10⁻³⁴ J·s × 4.6122 × 10¹⁴ Hz ≈ 3.058 × 10⁻¹⁹ J
Therefore, the corresponding energy, E ≈ 3.058 × 10⁻¹⁹ J.
how many electrons elements are present in period 2 ?
HELP PLEASE!!! FIRST PERSON TO ANSWER GETS 90 POINTS AND MARKED BRAINLIEST!
Answer:
MgO has a highest melting point
C5Br has lowesst
Explanation:
It takes a lot of energy to overcome the strong electrostatic forces of attraction between oppositely charged ions, so ionic compounds have high melting and boiling points. ... Magnesium oxide is made from ions with two charges (Mg 2+ and O 2-) and so has a much higher melting point of 2852°C.
Step 6: Measuring the Volume of Air Near 40°C
Temperature of gas: 40
COMPLETE
Height of the column of gas: 6.7
cm
Volume of gas (V =)
Temperature of gas: 303K
help me find out how to get the volume !!! pleaseeee
The volume using the cylinder formula : V=πr²h
Further explanationCharles's Law
When the gas pressure is kept constant, the gas volume is proportional to the temperature
[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
This experiment is an illustration of Charles's law, to determine the relationship between temperature and gas volume
If a certain amount of gas is heated, the volume will increase
So in this experiment, the temperature was changed as an independent variable and tube volume as a fixed variable
Because the tube is cylindrical, to find the volume using the cylinder formula
[tex]\tt V=\pi.r^2.h[/tex]
Meanwhile, to find the radius, you can use a caliper to measure the diameter of the tube and the result will be divided by 2
Answer:
1. Temp of gas 40C, Height of the column of gas 6.7
2. Temp of gas 313K, Volume of gas 0.84
Explanation:
Just answered on Edge
Which of the diagrams below shows an atom that is not a form of hydrogen?
Answer:
I believe is the npp i kinda forgot how to do these lol
Diagram with npp type shows an atom that is not a form of hydrogen.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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how can you best classify this molecule. A) carboxylic acid. B) Alcohol C) Ester D) Amine
Answer:
b) Alcohol
Explanation:
it is methanol
The smallest particle an element can be divided into is the A electron B neutron C isotope D atom
Answer:
D atom
Explanation:
What is a reflex? I am in k12 so I need the k12 answer please hurry VERY URGENT will give brainlist to first to answer.
Answer:
A reflex is an involuntary, or automatic, action that your body does in response to something — without you even having to think about it. You don't decide to kick your leg, it just kicks. There are many types of reflexes and every healthy person has them. In fact, we're born with most of them
Explanation:
PLEASE MARK ME AS BRAINLIEST
Answer: An action that is performed.
Explanation: Like a body movement that is fast or slow!
What chemicals can I mix together that will cause a huge explosion that is safe for school? It can't be a vinegar and baking soda explosion because I already have it. Please help!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Adding baking soda to vinegar, the reaction is delayed, but then fizzes the same amount. More vinegar is better.
Explanation:
what is the reaction type of 3ZnS+ 2AlP = 1Zn3P2 + 1Al2S3 ?
Answer: double displacement
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The balanced chemical equation is:
[tex]3ZnS+2AlP\rightarrow Zn_3P_2+Al_2S_3[/tex]
Thus as ions get exchanged , it is double displacement reaction.
To make a balanced equation, 6 H2O + 6 CO2 ---> C6H12O6 + _
Answer:
6O₂
General Formulas and Concepts:
Chemistry/Biology
Photosynthesis Equation: 6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂Explanation:
Most of the equation comes from the Photosynthesis Equation. Plants take in water and carbon dioxide and sunlight (energy) to produce glucose and oxygen. When we balance the equation and predict reaction. we should get 6O₂ as our answer.
WILL GIVE BRAINLIEST FOR THE RIGHT ANSWER!!!!!Which elements can form diatomic molecules joined by a single covalent bond?
A. hydrogen only
B. halogens only
C. halogens and members of the oxygen group
D. hydrogen and the halogens only
Answer:
b
Explanation:
that's the answerer
Susie is in the kitchen making brownies. She melts butter in the microwave, turns on the oven to preheat, and uses the electric mixer all at the same time. Which best explains how Susie can turn off without the other appliances turning off as well?
Answer:
A.
The circuits are wired in series, and when one appliance turns off, the others can still run.
B.
The circuits are wired in parallel, and when one appliance turns off, the others can still run.
C.
The circuits are wired in series, and when one appliance turns off, the others will switch to parallel circuits for power.
D.
The circuits are wired in parallel, and when one appliance turns off, the others will switch to series circuits for power.
Explanation:
The answer is b i just took it
reduces frictions creation of thermal energy
A: lubricant
B: electric heater
C: cell phone
Which forms of energy are released by a burning candle? (2 points) a Light energy and chemical energy b Light energy and heat energy c Heat energy and electrical energy d Mechanical energy and heat energy
Answer:
light and chemical energy
Explanation: mark me brainliest please
can someone help me please.
Answer:
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
Explanation:
ccccccccccccccccccccccccccc
What's the final overall charge for sodium and fluoride ?
Answer:
Sodium fluoride is conceived to be composed of equal numbers of
Na+ and F− ions that are electrostatically bonded together in an extended, non-molecular array. And therefore sodium fluoride is neutral.
Explanation:
A can of soda contains many ingredients, including vanilla, caffeine, sugar, and water. Which ingredient is the solvent? caffeine sugar vanilla water
Answer:
Water
Explanation:
Water is universal solvent it can disolves other things
From the can of soda containing many ingredients, including vanilla, caffeine, sugar, and water, the solvent is water.
What is a solvent?A solvent is a substance that dissolves other substances. This solvent is usually in liquid form.
Water is universal solvent, this implies that water dissolves almost every substance.
Thus, from the can of soda containing many ingredients, including vanilla, caffeine, sugar, and water, the solvent is water.
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What is a Conclusion?
A. What you figure out by doing an experiment
B. the group that does not take part in the Experiment
C. The data that you record during an Experiment
D. What you think is going to happen in an Experiment.
Answer:
A
Explanation:
using process of elimination, B would be, and I forget, but I think it's the controlled variable or one type of variable. C would be analysis or just data I guess. and D would be hypothesis
why is the symbol [Ar] used in the electron configuration of potassium, and what does it represent?
Answer:
To denote a stable inner configuration and it represents argon
Explanation:
The symbol [Ar] used in the electron configuration of potassium represents the inner electronic configuration of the element.
This argon atom is stable octet with completely filled shells. Most noble gases are used to write the electronic configuration of other atoms. The inner atomic orbitals of elements are similar to those of nearby noble gases.
Ar is Argon with a configuration of 1s² 2s² 2p⁶ 3s² 3p⁶So, this configuration is stable and it the inner configuration of potassium excluding the outermost orbitals.Solvent: Will give brainliest
Answer:
Solvent is 1.00 liter of water.
Answer:
It would be the water i think rlly srry if im wrong thats just what i got
Explanation:
because a solvent would be the one dissolving
There was a large population of woodpeckers living in a forest. Some of the woodpeckers had long beaks, some of the woodpeckers had short beaks. During a very rainy year, the bark on most of the trees grew very thick. Only the woodpeckers with the longest, strongest beaks could drill deep enough into the thick bark to find the insects they depend upon for food. Woodpeckers with short beaks could not drill in deep enough to reach the insects. If the rainy weather continues for several years, what do you expect would happen to the woodpecker population because of natural selection?
Answer:
The woodpecker population would start to decrease because of natural selection
Explanation:
How many valence electrons are found in gallium? 3 5 7 8
How many protons would an astatine atom have after emitting
an
alpha particles?
Answer:
Astatine is of interest as a cancer therapy because it is one of several elements that emit an α particle—a combination of two protons and two neutrons—when it decays.
Explanation: