... You didn't attach anything
What is a property of bases?
A. slippery touch
B. sour taste
C. ability to form hydronium ions
D. all of the above
Answer:
D
Explanation:
Bases have a bitter taste, slippery when touched and they can form hydronium ions. (they can conduct electricity.)
PLEASE HELP!!
How does one determine an empirical formula from a percent composition?
A. Convert mass percents to moles and then use the moles as
subscripts in the formula
B. Convert mass percents to grams and then divide by the smallest
gram value to find subscripts
C. Convert mass percents to moles and then divide by the smallest
mole value to get subscripts
D. Convert mass percents to grams and then divide by the smallest
mass percent value to find subscripts
PLZ HELP ASAP
(for A P E X)
What is cellular respiration?
O A. Using glucose to provide energy for the body
B. Converting sunlight to glucose to provide energy for plants
C. Exchanging O2 for CO2 in the blood within the lungs
D. Building glucose from smaller hydrocarbons
Answer:
Using glucose to provide energy for the body
Explanation:
One light beam has wavelength, and frequency, fl. Another light beam has wavelength, in, and frequency, f2. Write a proportion that shows how the ratio of the wavelengths of these two light beams is related to the ratio Of their frequencies.
The question is missing. Here is the complete question.
One light beam has wavelength, [tex]\lambda_{1}[/tex], and frequency, f₁. Another light beam has wavelength, [tex]\lambda_{2}[/tex], and frequency, f₂. Write a proportion that shows how the ratio of the wavelengths of these two light beams is related to the ratio of the frequencies.
Answer: [tex]\frac{f_{1}}{f_{2}} =\frac{\lambda_{2}}{\lambda_{1}}[/tex]
Explanation: In vacuum, eletromagnetic waves travels at a constant speed called "speed of light", whose symbol is [c] and magnitude is 3x10⁸m/s.
Speed of light, frequency and wavelength are related by the formula:
[tex]c=\lambda.f[/tex]
So, if one light beam has wavelength and frequency, [tex]\lambda_{1}[/tex] and f₁, respectively, the second beam has wavelength [tex]\lambda_{2}[/tex] and frequency f₂ and both travel at speed of light:
[tex]\lambda_{1}f_{1}=\lambda_{2}f_{2}[/tex]
[tex]\frac{f_{1}}{f_{2}}=\frac{\lambda_{2}}{\lambda_{1}}[/tex]
Then, the ratio that shows the relation between frequencies and wavelengths of these light beams is [tex]\frac{f_{1}}{f_{2}}=\frac{\lambda_{2}}{\lambda_{1}}[/tex]
If anyone can help, I will award a lot of points and give out brainliest!!
Answer:
i can help i think depends on the question! :)
first to answer correctly gets brainleist
19. The reaction 2NOBr (g) → 2 NO (g) + Br2 (g) is a second-order reaction with a rate constant of 0.80 M-1s-1 at 11 °C. If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 6.0 seconds is ________. A) 0.0276 M B) 0.0324 M C) 0.0363 M D) 0.0348 M E) 0.0402 M
Answer:
(C)The concentration of NOBr after 6 seconds is 0.0363
Explanation:
The second order equation is given by
[tex]\frac{1}{R} = KT+\frac{1}{Ro}[/tex]
k= rate constant= 0.8[tex]M^-1s^-1[/tex]
T= time = 6s
Ro= initial concentration = 0.044
[tex]\frac{1}{R}[/tex] = 0.8*6+ [tex]\frac{1}{0.044}[/tex]
[tex]\frac{1}{R}[/tex] = 27.53
R= 1/27.53 = 0.0363
♦ O people, evidence has come to you from your Lord, and we have sent down to you a clear light ﴾[An-Nisa: 174].
Answer:
Qura'an is what makes my day, I read it every morning and it makes me relaxed. I love reading the Qura'an. Do dua for me because I hope I am gonna memorize it after I finish reading it with tajweed.
Explanation:
Answer:
:)
Explanation:
Quran is something that makes you feel relax.
Which statement is true about covalent AND ionic bonds?
1. Covalent bonds share their valence electrons, while ionic bonds transfer electrons between atoms
2. Covalent transfer electrons between atoms while ionic bonds shares electrons
3. Both covalent and ionic bonds form new compounds by sharing electrons between atoms
4. Both covalent and ionic bonds form new compounds by transferring electrons between atoms
Answer:
1
Explanation:
ionic is transfer of electrons from metal to non metal while covalent is sharing electrons between two non metals
Answer:
It would have to be the first one
Explanation:
Why is aluminium used to make outer covering of aeroplane?
Aluminium alloys are used because they are light, relatively strong and inexpensive. Aluminum on its own is very soft and weak. However add about .24% copper and it becomes heat treatable and the 2024 alloy also age hardens. This works well for the skin of the aircraft. Rivets made from the 2117 alloy (.17% copper) work harden. This means they become hard as they are installed, resulting in a strong, durable structure. However aluminum alloys do have their limitations, and repeated cabin pressurization cycles can result in fatigue and cracking. These are normally found and repaired during the various aircraft letter checks.
HOPE IT HELPS YOU OUT PLEASE MARK IT AS BRAINLIEST AND FOLLOW ME PROMISE YOU TO FOLLOW BACK ON BRAINLY.IN
What does it mean if an element has no subscript in a chemical formula?
A. There are an uncertain number of atoms of that element in the
molecule.
B. The number of atoms of that element in the molecule can vary.
C. There is one atom of that element in the molecule.
D. There are no atoms of that element in the molecule.
there is one atom of that element in the molecule
A rock that has a mass if 180 grams dropped in a graduated cylinder that was originally filled to 52ml; it now reads 62ml. What is the density of this object
Answer:
18 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
volume = final volume of water - initial volume of water
volume = 62 - 52 = 10 mL
From the question we have
[tex]density = \frac{180}{10} \\ [/tex]
We have the final answer as
18 g/mLHope this helps you
What hold's the nucleus together in an atom?
If a compound begins with a metal, it most likely is a _______ compound
metallic
molecular
covalent
ionic
-and why?
Answer:
Metallic compound
Explanation:
Metallic compound -
A metallic compound refers to the species having at least one metal, is known as a metallic compound.
In general a metallic compound consists of two ions, a positive ion or the cation, is is basically a metal, and,
a negative ion or an anion, which is a non - metal.
Hence, from the given statement of the question,
The correct answer is - metallic compound.
What helps skin repair itself after it is cut?
Question 6 options:
interphase
photosynthesis
mitosis
Answer:
The answer is mitosis.
Explanation:
what is a solution of zinc and copper?? PLS HELP
five letter word
The nucleus of an atom consist of a protons and six neutrons the total number of electrons present in a neutral Atom the element is what??
Answer:
i think your answer is carbon because it has 6 neutrons and electron is also 6
Please help me fast
Answer:
Explanation:
I think 480. It should be able to give off more than it has and some of that energy is transferred.
The salts you tested were held together by ionic bonds. The compounds were made of two types of ions, positive and negative, that were attracted to each other because of their opposite charges. Some ionic bonds take more energy to break. Based on your investigation, which compounds have bonds that require the most energy to break?
A.
an ionic compound that completely dissolves in water, forming many ions
B.
an ionic compound that partially dissolves in water, forming some ions
C.
an ionic compound that does not dissolve in water, and thus does not form any ions
C. an ionic compound that does not dissolve in water, and thus does not form any ions.
Water breaks the ionic bond by hydrogen bonding, as, water itself has a more ionic bond and is polar in nature. Many other solvents such as kerosene and petrol are not capable of breaking the ionic bond. Hence, can not dissolve them, and they all have covalent bonds and which are non-polar in nature.The strength of a single covalent bond requires more energy to break than a single ionic bond. The weakest of the intramolecular bonds or chemical bonds is the ionic bond.Therefore, more energy is required to break the an ionic compound that does not dissolve in water since it will not have the ionic bonds in it.
Learn more:
brainly.com/question/957239
The symbol P represents the element phosphorus. This element’s atomic number is 15. How many protons and electrons are in a P–3 ion?
15 protons and 3 electrons
12 protons and 15 electrons
15 protons and 18 electrons
18 protons and 15 electrons
The number of proton will be 15 and number of electron will be 18.
What is proton?
In the nuclei of atoms, the proton is just a basic electrically charged particle with neutrons. The p symbol is used to represent it.
What is electron?
The electron is just a subatomic particle with a negative electric charge. It will find easily in the surrounding nucleus. They are assumed to be elementary particles.
Calculation of number of proton and number of neutron shown below:
It is given that the atomic number of phosphorus is 15 . After adding three more electrons in the outermost orbital of the phosphorus atom , new atomic number will be 18.
The atomic mass of the phosphorus = 31.
The number of proton = number of electron = atomic number
So, the number of proton = 15
Due to gaining 3 electrons , the number of electrons will be 15+3 = 18
Therefore, the number of proton will be 15 and number of electron will be 18.
To know more about proton and electron.
https://brainly.com/question/13131235.
#SPJ2
Which of the following is a physical or chemical characteristic of a mineral?
Which of the following has potential energy? (A child swinging on a play set a book on a table a ball rolling down a hill a car driving down the road)
Answer:
book on a table
Explanation:
potential energy is stored energy
also mark brainliest
Answer:
A child Swinging on a play
Explanation:
Because The potential Energy is about doing something The Defference about Kinetic Energy are A Things That not move before you moved it
Identify the phase change described by the following equations.
a. C18H38(s) → C18H38(l) _______________________
b. CO2(g) → CO2(s) _______________________
c. NH3(l) → NH3(g) _______________________
Answer:
it is b
Explanation:
Becuase CO2(g) is the right answer bc i said so ok if u think im wrong ask your mom of if u say im dum im not im a teacher ok bye
What effect does the pH of water have on radish seed germination?
What is the name of a compound having the formula Al2O3? (5 points)
1) Aluminum peroxide
2) Aluminum ozone
3) Aluminum oxygen
4) Aluminum oxide
Answer:
4) Aluminum Oxide
Explanation:
Answer:
Aluminum Oxide
Explanation:
:)
Which period on the periodic table do we start to encounter P subshells?
Answer:
There are 4 subshells, s, p, d, and f. Each subshell can hold a different number of electrons. The n number determines how many of the subshells make up the shell. For example, the 1st shell is made up of 1 subshell, s.
Explanation:
hope this helps...
Answer:
i wasn't getting what your question is so this is it
PLEASE HELP!!! WILL GIVE BRAINLIESTTTT
A piece of wood has a mass of 2.85 g; when placed in 20.0 mL of water, the water volume increased to 23.4 mL. What is the density of this piece of wood?
_______ Answer _______Units
Answer:
d = 0.84 g/cm³
Explanation:
Given data:
Mass of wood = 2.85 g
Volume of water = 20.0 mL
Volume of water + wood = 23.4 mL
Density of wood = ?
Solution:
Volume of wood = (Volume of water + wood ) - Volume of water
Volume of wood = 23.4 mL - 20.0 mL
Volume of wood = 3.4 mL
1 mL = 1 cm³
Density of wood:
d = m/v
d = 2.85 g / 3.4cm³
d = 0.84 g/cm³
Can someone please help me answer these 2 questions
Answer:
Days of the week are arranged in rows from left to right
Mondays in a Month are arranged in columns from top to bottom
Explanation:
Normal red blood cells slide easily through narrow blood vessels. In sickle cell disease, many red blood cells change to a crescent shape like a slender moon. Crescent-shaped blood cells cause blockages in blood vessels. These blockages decrease the transport of oxygen. People with sickle cell disease often have sharp pains due to the lack of oxygen in parts of the body.
Sickle cell disease is caused by an abnormal type of red blood cell gene inherited by the parents. What is the name for different forms of the same gene?
A. recessive genes
B. dominant genes
C. traits
D. alleles
Answer:
alleles
Explanation:
A pickle contains 450mg of salt.
A.) Claim
B.) Reasoning
C.) Evidence
The answer is C.) Evidence