Answer:
CH4
Explanation:
Hydrocarbons are composed of hydrogen and carbon only.
CH4 is a formula for a hydrocarbon. Hence option a is correct.
What is chemical formula?Chemical formula is defined as a technique of expressing the chemical ratios of atoms that make up a certain chemical compound or molecule using chemical element numbers and symbols. The components of a compound's molecules are identified in its chemical formula, as well as the ratio in which the components' atoms mix to form those molecules.
A hydrocarbon is any of a group of organic compounds comprised only of the atoms carbon (C) and hydrogen (H). The structure of the complex is built up of carbon atoms, and hydrogen atoms attach to that framework in a variety of ways. chemical substance Study up on chemical substances.
Thus, CH4 is a formula for a hydrocarbon. Hence option a is correct.
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What is the electron configuration for helium (He)?
A. 1s1
B. 1s2
C. 1s22s1
D. 1s22s2
Answer :
B. 1s2
this is your answer....
The electronic configuration is the system of the electron distribution in the shells of the atom. The electronic configuration for He is 1s² as it is a noble gas. Thus, option B is correct.
What is electronic configuration?The electronic configuration is the depiction of the electrons in the orbital level of the atoms around the nucleus. The electrons are distributed in the four orbitals namely, s, p, d, and f.
The orbitals have different sub-levels and can accommodate a different number of electrons. The electronic configuration of helium atom with atomic number 2 can be written as, 1s².
The s orbital can accommodate only two electrons in them and helium having only two electrons gets completely filled. Helium being the inert gas has the most stable configuration.
Therefore, 1s² is the electronic configuration of He.
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what are two partsof an atom?
Answer:
The two main parts of atom is consist of Nucleus and Electrons where in Nucleus has a positive charge while electrons have negative charge.
to find the mass number you add the protons + the electrons
true or false
Answer:
false. you add the protons and neutrons
Answer:
false..
mass no. =protons + neutrons
Explanation:
mrk as brainliest Pls and follow me..
I'm new here
What is the scientific notation of 65000?
Answer:
the answer is 6.5 x 10^4
Answer:
6.5 x 10^4
Explanation:
what is the maximum number of vacant electrons an element can have (correct answer gets brainliest)
a.6
b. 18
c. 10
d.8
Answer:
I think 10 or 18
Explanation:
Tiny water droplets in the air disperse the white light of the sun into a rainbow. What is the energy of a photon from the red portion of the rainbow if it has a frequency of 4.57 × 10^14s^–1?
The answer is :
3.02 X 10–19 J
A Boron atom has 5 protons, 6 neutrons, 2 electrons, and a mass of 11. Select 2 that apply.
a
+ 2 charge
b
+ 3 charge
c
electrons were lost
d
electrons were gained
e
zero charge
Answer:
B and C
Explanation:
How many atoms of sodium are in 3.80 mol of sodium, Na?
Answer:
2.29 × 10²⁴ atoms Na
Explanation:
Step 1: Define
Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.
Step 2: Stoichiometry
[tex]3.80 \hspace{3} mol \hspace{3} Na(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} Na}{1 \hspace{3} mol \hspace{3} Na} )[/tex] = 2.2876 × 10²⁴ atoms Na
Step 3: Simplify
We have 3 sig figs.
2.2876 × 10²⁴ atoms Na ≈ 2.29 × 10²⁴ atoms Na
How do solute concentrations affect the rate of osmosis within the cell?
Answer:
Image result for How do solute concentrations affect the rate of osmosis within the cell?
Concentration gradient - The movement of osmosis is affected by the concentration gradient; the lower the concentration of the solute within a solvent, the faster osmosis will occur in that solvent.
I think this is it^^^
Explanation:
Find molar mass of gold
Answer:
196.96657 g/m
Explanation:
The molar mass of gold is 196.96657 g/m
(I don't know if there is a picture or not to this but that is the molar mass of gold.)
which of these is a chemical property of a material?
I need help with this question
Answer:
Calcium Sulfide. The Lewis Structure shows it as CaS
Explanation:
Calcium is considered a metal on the periodic table, while sulfur is a non-metal. Calcium has a 2+ ionic charge while sulfur has a 2- ionic charge. Since you want a charge of 0, the Calcium ionic charge of 2+ and the sulfur ionic charge of 2- cancel out, since 2+(-2)= 0
PLEASE HELP ILL GIVE BRIANLIST ANSWER
Describe how evaporation and condensation work together to create earth's water cycle
Answer: when water is evaporated from the earth whether that be from bodies of water or plants, when it goes up higher, the temperature drops, causing the water droplets to condense, which means form water. This creates clouds and when the clouds get too big and full, precipitation (rain) happens and the rain falls to the earth. This cycle is then repeated.
Explanation:
PLEASE HELP!! What is the chemical equation for soot?
Answer:
C3H
Explanation:
Initially these primary suit particles have roughly the composition and each is actually made up of several thousand carbon Adams the empirical formula suggest cycle is highly unders and unsaturated made structural element
Answer:
C3H)n
Explanation:
HelpMe please !!!!!!!! Hey
Answer:neutralization
Explanation:The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water.
Answer:
neutralization
Explanation:
i think
The earth has three main chemical layers, these layers formed from a process called
Answer:
The process of forming the iron - rich core, the low density crust which is also rich in silicon, oxygen, aluminum, and the intermediate density mantle rich in silicon, oxygen, and magnesium is called the differentiation. Thus, the answer to this item is letter A.
Explanation:
Two descriptions about physical quantities are given below:
Quantity A: It remains constant.
Quantity B: It depends on gravitational pull.
What quantities are these most likely describing?
a Both Quantity A and Quantity B are mass.
b Both Quantity A and Quantity B are weight.
c Quantity A is weight and Quantity B is mass.
d Quantity A is mass and Quantity B is weight.
Answer:
quantity A is mass and quantity B is wieght
Answer:
D. is correct, like the first person said
Explanation:
Two students made the Lewis dot diagrams of H2O. The diagrams are as shown.
Which student drew the correct Lewis dot diagram?
A. Only Student A
B. Only Student B
C. Both Student A and Student B
D. Neither Student A nor Student B
Answer: only student A
Explanation: i’m
not a teacher just a student cheating helping kids<3
Lewis structure depicts the shared and the nonshared valence electron in the molecule. The diagram made by student A is correct. Thus, option A is correct.
What is Lewis dot structure?Lewis dot structure is the representation of the lone pairs of electrons or the unshared valence electron pair of the atom or the molecule. They also represent the shared bonds between the same or different atoms.
The structure follows the octet rule and represents the shared, lost, or gained electron as the dot above or at the side of the atom. In a water molecule oxygen has 6 electrons in the outer shell and hydrogen has one each.
The hydrogen is in bonds with the oxygen atom that shares the electron between them to complete their octet. Two pairs of electrons on oxygen are non- shared and are represented as lewis dots above the oxygen atom.
Therefore, only student A correctly drew the lewis structure.
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how many grams in a kilogram,how many quarts are in a pint and if how many ml of h20 = 1g
Answer:
1 g + 10 g
Explanation:
Answer:
there are a thousand grams in a kilo
How many molecules are in the following formula?
2(NH4)3PO4
Answer:15 I think
Explanation:
Who was the first person to come up with the idea of the "atom?"
Answer:
Democritus
Explanation:
Democritus first introduced the idea of the atom almost 2500 years ago. Democritus was an important philosopher however if your talking about how the atom is today look at first rudimentary pudding model by JJ Thomson first design then its Neils Bohr whos model we look at today
Bohr shows that electrons stay in discrete energy levels around the nucleus.
A. True
B. False
Answer:
that is definitely false at least i think it is.
Explanation:
Hydrogen is considered a___________________
Answer:
《HOPE IT WILL HELP YOU 》
Explanation:
Alternative fuel under the energy policy act of 1992.
Which of the following is an example of a producer?
O a plant
O a bird
O a deep-sea vent
Answer:
i believe the answer is a plant
Explanation:
they provide food (energy) for those further up the food chain
Answer fast! All transition metals have _______ valence electrons.
Answer:
2 Answers. Most transition metals have 2 valence electrons. Valence electrons are the sum total of all the electrons in the highest energy level (principal quantum number n). Most transition metals have an electron configuration that is ns2(n−1)d , so those ns2 electrons are the valence electrons.
Explanation:
What is the density if the Mass is 138g and the Volume is 100mL?
Answer:
1.38 g/ml
Explanation:
density is equal to mass divided by volume so divide 138 by 100 and your answer would be 1.38
hope it helped
How are beta particles similar to alpha particles?
The beta particles are similar to alpha particles in the way that they both are used in the treatment of cancer.
What are the types of radioactive particles?Alpha particles, beta particles, and gamma rays are the three most frequent forms of radiation.
Two protons and two neutrons are joined together to form the alpha particle, which is positively charged.When a neutron becomes a proton and a high-energy electron, it generates a beta particle. The proton remains in the nucleus, but the electron is released as a beta particle from the atom.Similarity between beta and alpha particle is that they both are used in the treatment of cancer.
Hence both particles are used in the treatment of cancer.
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is there any way the pandemic helps this society?
[tex]22 \times 12[/tex]
Answer:
u meant the answer to this ques
Explanation:
22
×12
------
44
22 ×
----------
264
-----------
or the answer can be 22×12=264
What is one source of CO?
Answer:
Carbon monoxide (CO)—a colorless, odorless, tasteless, and toxic air pollutant—is produced in the incomplete combustion of carbon-containing fuels, such as gasoline, natural gas, oil, coal, and wood. The largest anthropogenic source of CO in the United States is vehicle emissions.
Explanation:
Hope this helps- good Luck! ^w
[URGENT. WILL GIVE BRAINLIEST] explain how distance and the number of protons in the nucleus affects the force of attraction between electrons and protons
Answer: kk mark the other dude brainlist
Explanation:
