Answer:
C
Explanation:
Answer:
The answer is C
Explanation:
The older elephants are surrounding the calf to protect it and make sure it lives to reproduce.
if you have 3 dozen pennies how many ml of water would they displace
The mass of the displaced fluid can be expressed in terms of the density and its volume, m = ρV. The fluid displaced has a weight W = mg, where g is acceleration due to gravity. Therefore, the weight of the displaced fluid can be expressed as W = ρVg.
Which characteristic is common of cnidarians
A- They live only in the oceans
B- They have four legs
C- They live at the surface of the water
D- They have tentacles
Answer:
it's -C......................
Which of the following is a molecular compound?
F) NO2
G) Ca(NO3)2
H) H2SO4
J) NaOH
Answer: H
Explanation:
Sodium chloride is dissolved in water.
Which ions are present in the electrolyte?
Answer:
Na+
Cl-
H+
OH-
Explanation:
NaCl + H2O -----> Na+. Cl- + H+ OH-
Samira has a son who is 24 months old. Her sister Paulina also has a son who is one and a half years old. Whose son is older? Explain how you know.
Answer:
the 24 month old
Explanation:
24 divided by the 12 months in a year is 2 and 2 compared to the 1 and a half is bigger
Solve you will get brainliest and23 points
Please help me in Q3 it’s not understandable to me
Answer:
A- mixture
B- element
C- compound
Explanation:
A mixture is composed of two or more substances. Since it is not entirely homogeneous throughout, then it can not melt or boil at a fixed temperature.
An element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. This describes substance B.
A pure chemical element has a fixed melting and boiling point.
A compound is composed of one or more chemical elements. A compound may be broken down into its components by certain processes.
How many moles of helium are contained in 9.85 x 1023 atoms?
9.85 x 1023 atoms
Answer:
10076.55
Explanation:
What is wrong with writing the electron configuration of a ground state atom as 1s2 2s2 2p6 3s2 3p6 4s2 4d1?
Answer:
4d - orbital makes the given electronic configuration wrong.
Explanation:
The order of electronic configuration is written as;
1s²
2s² 2p⁶
3s² 3p⁶ 3d¹⁰
4s² 4p⁶ 4d¹⁰ 4f¹⁴
5s² 5p⁶ 5d¹⁰ 5f¹⁴
6s² 6p⁶ 6d¹⁰ 6f¹⁴
7s² 7p⁶ 7d¹⁰ 7f¹⁴
In order of energy level from the lowest to the highest, the configuration of the given atom in ground state can be written as;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹, when compared to the given configuration, 4d orbital makes the given configuration wrong, because the next orbital after 4s is 3d.
which statement accurately describe stars
Explain why reactivity increases by linking increase in atomic number, number of shells with the shielding of outer most electron
someone help pls :,)
Answer:D
Explanation:
Cause I literally just did this
Can someone help?
Apparently you couldn’t see the picture in the previous question. Hopefully it will now.
Answer:
ummm sugar is the answer ;-;
Which of the following statements is NOT true about combustion reactions?
Select one:
a. The products are always carbon dioxide and methane.
b. The reactions involve burning of hydrocarbons.
c. Combustion reactions have oxygen and a hydrocarbon as reactants.
d. There are two types of combustion reactions: complete and incomplete.
Answer:
The answer is option C, that is, combustion reactions have oxygen and a hydrocarbon as reactants.
To solve such this we must know the concept of combustion reaction. Therefore, Combustion reactions have oxygen and a hydrocarbon as reactants. The correct option is option C.
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
Combustion reaction is a reaction in which a substance, basically hydrocarbons burns in presence of oxygen to produce carbon dioxide and water. Combustion reaction is a chemical process.
Therefore, combustion reactions have oxygen and a hydrocarbon as reactants. The correct option is option C.
Learn more about the chemical reactions, here:
brainly.com/question/3461108
#SPJ6
What are the standard temperature and pressure conditions enthalpy is usually measured under?
The correct answer is D: 100kPa and 298 K.
The enthalpy of a system is a thermodynamic quantity which can be regarded as the total energy content of the system.
The enthalpy of a system is measured under standard conditions. The standard conditions include;
100kPa298 K1 M (for aqueous solutions)Hence, the standard temperature and pressure conditions enthalpy is usually measured under are 100kPa and 298 K.
https://brainly.com/question/1657608
Use the bond dissociation energies of H2 (435 kJ/mol) and of a typical carbon–carbon bond (347 kJ/mol) to decide which bond is stronger. Explain your reasoning.
Answer:
H2 bond is stronger
Explanation:
In this question, we are trying to make a connection between bond dissociation energy and the strength of a bond.
First of all, we must know that any bond that is quite stable must have a large bond dissociation energy. This means that more energy is supplied in order to cleave the bond.
A high bond dissociation energy actually implies that a bond is of low energy and consequently stable.
Is Fire a gas, liquid, or solid...
Answer:
gas
Explanation:
fire is a gas not liquid or soild
You’ll get marked as brainlist I think because that’s what happened last time (:
Answer:
both are physical, caused by heating
Explanation:
The visible light is a short segment of the electromagnetic spectrum.
Yes or No
Answer:
Yes
Explanation:
The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view.
A 20 kg box of rocks is held out over a cliff at a height of 10 m. How much gravitational potential energy does the box of rocks have?
PLEASE HELP! this is a science test/quiz I’m pretty sure the answers are on the bottom if not please comment so I can tell you them
PLEASE ASAP
HELP!!!!!!!!
Answer:
sec explanation: It is because it goes by order sec, min, day, month, and year etc
Answer:
sec
Explanation:
Zachary adds 9.7 g to 1.114 g.
How many significant figures should his answer have?
help me please!!!!!!!!!
Help me answer these questions
Answer:
3.
a.climate
4.
c.average measurements of temperature and rainfall over many years
What are protons, neutrons, and electrons made of?
Answer:
quarks and gluons
Bonding Story Mini Project
You can choose to show ionic bonding, covalent bonding (polar or nonpolar), or both, but your story must do the following:
1. Explain the type or types of bonding you are showing - this does not need to be explicit, but it needs to be somehow worked into the story.
2. Show at least 2 different bonds forming (e.g. 2 different compounds)
3. Show the valence electrons of the atoms and how they meet the octet rule
Pleassseee Answerrrrr
Light waves can travel through a vacuum (empty space), while sound
waves cannot travel through a vacuum.
True or False
Answer: True
Explanation:
True. Sound does not have the required energy or speed to travel through a vacuum. Light can exist almost anyplace.
What is an octet of electrons? Which elements contain an octet of electrons?
Answer:
> Octet, in chemistry, the eight-electron arrangement in the outer electron shell of the noble-gas atoms. This structure is held responsible for the relative inertness of the noble gases and the chemical behaviour of certain other elements.
> Referring to the octet rule, atoms attempt to get a noble gas electron configuration, which is eight valence electrons. Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Chlorine has seven valence electrons, so if it takes one it will have eight (an octet).
By definition, an electron octet establishes that the atom is stable when it has 8 electrons in its valence shell. Noble gases are electrochemically stable elements, that is, they have 8 electrons in their last shell, containing an electron octet.
The octet rule states that the atoms of the elements bond to each other in an attempt to complete their valence shell with eight electrons. In other words, the atoms will tend to give up or share electrons to complete eight electrons in the valence shell through an ionic, covalent or metallic bond.
In other words, the goal is to have the closest noble gas electron configuration, thus having the last complete electron shell and acquiring stability.
That is, the octet rule defines the property that atoms have of completing their last energy level with eight electrons to achieve stability. The basis of this rule are the noble gases that have 8 electrons in their last shell and are the least reactive elements of the entire periodic table.
In summary, an electron octet establishes that the atom is stable when it has 8 electrons in its valence shell. Noble gases are electrochemically stable elements, that is, they have 8 electrons in their last shell, containing an electron octet.
Learn more:
https://brainly.com/question/13496887?referrer=searchResults6CO2 + 6H2O → C6H12O6 + 602
How many molecules of CO2 are present
Answer:
12 hydrogen + 12 hydrogen = 24 hydrogen
Hydrogen was transferred from sugar and water on the left to water on the right releasing
Explanation:
