Answer:
4.)33.2 g
Explanation:
(1.25E24/6.022E23)×15.99
How many atoms are in 3C2H6
Answer:
Two carbon atoms and six hydrogen atoms = 8 atoms
Explanation:
What is the boiling point of steel?
Answer:
Steel often melts at around 1370 degrees C (2500°F)."
Explanation:
your welcome
Answer:
Steel often melts at around 1370 degrees C (2500°F)."
Explanation:
Since sodium chloride is classified as a compound, a sample of it contains A. atoms that are gases, liquids, and solids. B. matter that cannot be reduced to atoms. C.more than one kind of atom. a solution of atoms and molecules.
Answer:
more than one kind of atom. a solution of atoms and molecules.
Explanation:
Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. Rather, it contains equal numbers of sodium ions with a charge of positive one (Na+) and chloride ions with a charge of negative one (Cl−).
Since sodium chloride is classified as a compound, a sample of it contains more than one kind of atom, a solution of atoms and molecules.
Compounds are generally made up of atoms of different elements. The elements could be two or even more than two.
Compounds are as opposed to elements because the latter contains atoms of the same substance.
Molecules are the smallest unit of a compound that can take part in reactions.
More on compounds can be found here: https://brainly.com/question/15647056
Which of these statements is supported by the results of the Thompson’s experiment?
Answer:
um do u have a pic cuz i dont get it
How do you identify the solute and solvent of SO^2
Answer:
How to identify a solute and solvent?
It is not possible to identify the solute and solvent as different substances in a solution. In a solution of table salt and water, the salt is the solute and the water is the solvent. In the cells of your body, substances such as calcium ions and sugar are solutes, and water is the solvent.
Explanation:
Answer:
Fórmula química: SO2 estado=Gas
Punto de ebullición: -10 °C (14 °F)
Masa molar media: 64,06 g/mol
Punto de fusión: -72 °C (-97,60 °F)
Denominación según IUPAC: Dióxido de azufre
Explanation:
The student performed an experiment to test his hypothesis about sunlight and plant height using two plants. He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. He also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results. Roberto critiqued the work. Which problem did Roberto most likely identify? 1.The sample size is too small. 2.Too many variables are manipulated. 3.It is not possible to keep the conditions the same. 4.Controls should only be used in studies of animals.
Answer:
The sample size is too small
Explanation:
In this case, the sample size refers to the number of plants in the experiment. Only one plant was assigned to each group. This sample size is too small to derive any statistically significant meaning from the outcome of the experiment.
If a larger sample size is used, a more accurate mean value will be obtained. It will also be easy to identify any outliers that could cause the data to be skewed if the sample size were to be smaller. Use of larger sample size decreases the margin of error in the experiment.
What is the major difference between electrons reacting and protons and neutrons reacting?
a
change in mass
b
change in energy
c
change in organization
d
all of the above
How is a nuclear change or reaction fundamentally different from a chemical reaction?
(1) Nuclear reactions involve a change in an atom's nucleus, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei. Hope this helps! :)
What is true of gas?
Answer:
Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy. ... The particles exert more force on the interior volume of the container
Explanation:
Answer:
Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy. ... The particles exert more force on the interior volume of the container.
Explanation:
An atom's nucleus contains three protons and three neutrons. What is the
overall charge of the nucleus?
A. -3
B. +6
C. +3
D.O
Answer:
C- +3
Explanation:
Protons equal one positive charge, neutrons equal one neutral charge.
3 + 0 = 3
An atom's nucleus contains three protons and three neutrons. Then the overall charge of the nucleus is +3. Therefore, option C is correct.
What is neutron ?The neutron, symbol n or n0, is a subatomic particle with a neutral charge and slightly more mass than a proton. Atomic nuclei consist of protons and neutrons.
When alpha particles strike any of a number of light isotopes, such as isotopes of beryllium, carbon, or oxygen, neutrons are created. This means that an alpha-emitter, such as radium, polonium, or americium, can be combined with a low-atomic-weight isotope to create a neutron source.
The neutrons' main job in an atom's nucleus is to contribute to the nuclear glue, or binding energy, that binds the nucleus together. This is understandable as follows: Protons and neutrons make up an atomic nucleus.
Thus, option C is correct.
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What is the mass of Darmstadtium?
Answer:
281 u
Explanation:
Answer:
281 u
Explanation:
an oxygen atom with 9 neutrons in its nucleus (Enter your answer using the format AX.)
When an electron is promoted to a higher energy level what is the new state called
2. Describe the structure of atoms
including the masses, electrical
charges, and locations of the
subatomic particles.
Answer:
Explanation:
An atom is neutral has no charge if it has a charge it becomes an ion
Masses vary It has the same number of protons and neutrons
electron has a negative charge whereas a proton has a positive charge.
How many sig figs are in 2.3400?
Answer:
5 fig Hope this helps!
I hate asking for things, but may I have brainliest I'm trying to rank up.
Explanation:
Sig Figs
5
Decimals
4
Scientific Notation
2.3400 × 100
Words
two point three four
Which statement about the electron-cloud model is true? It is the currently accepted atomic model. It can easily be replaced by existing models. It specifies the location and momentum of an electron. It does not explain the formation of emission lines.
Answer:
A
Explanation:
just did the test
The electron cloud model is the modern model of the atom that contrasts the exact position of the electron. It is the currently accepted atomic model. Thus, option A is correct.
What is the electron-cloud model?The electron-cloud model is currently accepted and used model that states about the moving electron cloud around the nucleus in an atom. It contrasts with the previous models.
The electron cloud gives the probable position of the electron rather than a fixed position. It was given by Erwin Schrodinger that showed electrons no longer move in a fixed orbital around the atom.
The position of the electron is determined based on the cloud where they are most likely to be present. The field with high probability is represented as a dense area.
Therefore, option A. electron-cloud model is a modern atomic model.
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Which temperature equation do you use when trying to find Celsius?
please i need help before 9:00 am today.
Answer: First subtract 32 degrees, then multiply the result by 5/9 (0.556 on a calculator). For example, suppose a thermometer reads 68 degrees Fahrenheit. Subtract 32 from 68, leaving 36. Multiply 36 by 5/9, which equals 20 degrees Celsius.
Explanation:
HEY GUYS! ok i have to tell the girls something pleease do not ask me "why on a homwork app?" but i have been doing online school since march 13 and i started dating this guy september 24 and i am finally going to meet him on monday for the first time because he just moved here!!! HOW DO I ACT WHEN I FIST SEE HIM!!!
100 point for best answer!
Answer:
Act exactly how he sees you... like what ever your personaltiy is, act that way but multilpy it...
Explanation:
Be kind and say hello
Answer:
Don't act weird, Act like a normal person and act like you are really going to have a great relationship!
Explanation:
I have had like 4 boyfriends, We broke up cause I acted weird and I was appeartly a bad girlfriend. So yeah, But there are plenty of fishes in the sea for ya:) Mark me brainlest please!! Hope he is nice to ya, even tho your just friends. Have a great day!!
An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of
Answer: It has a charge of -2 because it has 2 more electrons than protons meaning it has a negative charge of 2 which is -2. Neutrons don't effect charge.
( +1 +1 -1 -1 -1 -1) = -2
Each proton has a charge of +1 and each electron has -1.
2(1) - 4(1) = -2
Answer:
2×-1.6×10^-19 C= -3.2×10^-19 C
Explanation:
charge on one proton is 1.6×10^-19 C
lets call this +q
therefore charge on on electron is -q
neutron does not have any charge, it is a neutral particle
Therefore the net charge will be
2q-4q= -2q
(q = 1.6×10^-19 C)
How is burning wood a good illustration of the law of conservation of mass?
List four metric prefixes and list what they stand for ( what they mean )
What is 25.3 X 12.65 before rounding?
Answer:
320.045
Explanation:
what is an organelle-
A. A leaf cell that is responsible for performing photosynthesis
B. A structure inside the cell that performs a specific function
C. A group of cells that performs a task
D.A type of unicellular organism that can carry out life functions
Answer:
B
Explanation:
it's on the internet and I just know because I did this before too
WILL GIVE BRAINLIEST!!
When salt is added to the solution, it dissolves into its component ions. How did this seem to affect the compound formed on the egg shell?
Answer:
because the salt will melt the egg shell because of whats in the salt
i tried i didnt really know the answer LOL
Explanation:
What was the atomic theory about?
A) the existence of isotopes
B) the properties of the nucleus
C) the structure of the atom
D) the existence of electrons
Answer:
C
Explanation:
According to John Dalton's Atomic theory, it was about the structure of the atoms: "Each chemical element is composed of extremely small particles that are indivisible and cannot be seen by the naked eye, called atoms"
Answer:
C, the structure of the arom
Explanation:
It says it on google
The atomic number tells you the number of ________ in one atom of an element.
Answer: Protons
Explanation:
Answer:
The atomic number tells you the number of mass in one atom of an element.
How many grams of Ag are there in 0.901 moles of Ag?
Answer:
The answer is 0.0092705727916105. We assume you are converting between moles Ag and gram.
Explanation:
Answer:
97.2 g Ag
Explanation:
Molar mass of Ag = 107.86 g/mol
0.901 moles Ag x (107.86 g Ag/ 1 mol Ag) = 97.2 g Ag
Moles cancel and you are left with grams of Ag. Multiply 0.901 by 107.86 to find grams of Silver.
Arrow A is pointing to the:
It points at the suture , bone.
A graph of potential energy versus internuclear distance for two Cl atoms is given below. On the same graph, carefully sketch a curve that corresponds to potential energy versus internuclear distance for two Br atoms.
Answer:
Explanation:
The sketch of the curve for two Br atoms can be seen in the image attached below. From the image below, we can deduce the following:
On the periodic table, the Bromine (Br) atom is the fourth member in the halogen family group. The atomic size increases from top to bottom down the group, thus Br atom posses a larger atomic size than Cl atom. As a result of that, the bond length formation between the two Br atoms will be larger compared to that of the two Cl atoms.
Which of the following best describes the function of the nucleus?
The nucleus controls the cell and contains DNA.
The nucleus transports materials inside the cell.
The nucleus holds the parts of the cell together.
The nucleus stores materials like food and waste.
Answer:
A
Explanation:
the nucleus has all the information about the cell and has the DNA
The function of the nucleus is that the nucleus controls the cell and contains DNA. Hence option A is correct.
What is DNA?DNA stands for deoxyribonucleic acid. DNA is defined as the molecule that contains the genetic material necessary for a creature to develop and function. Adenine (A), cytosine (C), guanine (G), and thymine (T) are the four different types of smaller chemical molecules together known as nucleotide bases that make up the linear molecule DNA .
Nucleus are defined as an organelle with two membranes that houses the genetic material and other instructions needed for cellular functions. A positively charged nucleus and a cloud of negatively charged atoms make form an atom.
Thus, the function of the nucleus is that the nucleus controls the cell and contains DNA. Hence option A is correct.
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Please help.
The scientific method is a __________________
used during a scientific ____________________
to answer a scientific question.
Answer:
1. a series of steps 2. experiment
Explanation: