Answers
Answer:
1 Valence Electron
2 Proton
3 Neutron
4 Nucleus
Explanation:
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Related Questions
What is a function of the backbone in animals?
A. It protects against predators.
B. It regulates blood glucose.
C. It surround the spinal cord.
D. It limits movement.
Answers
C - It surrounds the spinal cord.
Explanation:
Option A would be incorrect. Having a protective shell on an animal’s back would be one of the ways they would be protected against predators. And having a backbone wouldn’t really make a good shield against predators.
Option B is incorrect. The pancreas regulates blood glucose, not the backbone.
Option D would also be incorrect. It doesn’t limit movement unless it’s bent or positioned abnormally. Or unless it’s broken or malfunctioned.
The only option that is correct is option C. Hope it helps. ^^
Which statement is false? a. A closed system does not interact with its surroundings. b. Matter and energy can be transformed in and out of a system c. Energy can be created or destroyed. d. If energy appears to be gained or lost, it has just changed into a different form
Answers
What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons?
86
28
58
56
Answers
SMOOTHIES: Why does adding lemon juice [to a blueberry smoothie
make it change colour from purple to pink?
Answers
Answer:
Explanation:
Cuz the color is a light yellow and water to make it loose color
The mixing of two different liquids together to form a new mixture is called a solution.
The correct option is acid.
In a solution, there are two components which are known as solute and solvent. In which solute is less in amount and solvent is more in an amount which is water.
According to the question, the smoothie turns the color to pink from purple because lemon act as an acid and changes the ph of the solution.
Hence, the Lemon act as an acid.
For more information, refer to the link:-
https://brainly.com/question/15804584
What cell function produces offspring
Answers
Answer:Sexual reproduction produces offspring with novel combinations of genes
Explanation:
yes
Paragraph 2 discusses two different types of thermochemical reactions. In one type of
reaction, the enthalpy term is located on the reactant side of the equation. Which type of
reaction is this?
Answers
Answer: The reaction is endothermic.
Explanation:
Endothermic reaction : It is a type of chemical reaction where the energy is absorbed from the surrounding. In the endothermic reaction, the reactant have less energy than the energy of products
In endothermic reaction, enthalpy terms is located on the reactant side.
Example: [tex]A+B+energy\rightarrow C+D[/tex]
Exothermic reaction : It is a type of chemical reaction where the energy is released into the surrounding. In the exothermic reaction, the energy of reactants are more than the energy of products
In exothermic reaction, enthalpy terms is located on the product side.
Example: [tex]A+B\rightarrow C+D+energy[/tex]
I am worried about your proposal to install a groundwater heating system in my daughter’s school.
I don’t think that water at a temperature of 30°C has enough energy to heat the school. If the school is too cold, the students won’t be able to focus on learning.
Respond to David Li’s letter. Explain how the groundwater system could heat the air in the school.
Answers
Answer: The temperature would increase assuming it is 30 degree water causing a change in the temperature and assuming it is a seismic groundwater source you are using the earths core to heat the school so it would likely be a stable energy source. There are very few places on the planet where that warm of water is accessible without drilling really deep into the core but if it is there and is a stable fault then the energy would be consistent and stable.
The groundwater system can heat the air in the school by transferring the heat in the ambient atmosphere of school.
Groundwater heating system:
Although the temperature of the ground water is not much but the amount of groundwater is too much.
This large amount water slowly releases heat energy which is transferred in the ambient atmosphere of school.
Therefore, the groundwater system can heat the air in the school by transferring the heat in the ambient atmosphere of school.
To know more about groundwater heating system,
https://brainly.com/question/2029584
What kind of bond will form when Sodium and Nitrogen react?
Answers
Answer: Ionic Bonds
"When it forms the nitride ion, it gains three electrons to form a 3- ion: N3− . In ionic compounds, the charges of constituent ions must balance. This can be achieved by having three sodium ions per nitride ion. Therefore, the formula of sodium nitride is Na3N"
Explanation:
https://socratic.org/questions/what-is-the-formula-for-sodium-nitride#:~:text=When%20it%20forms%20the%20nitride,nitride%20is%20Na3N%20.
What is the percent composition by mass of oxygen in the compound
MgSO4?
20%
46%
53%
27%
Answers
certain conductor with a resistance of 10 Ohms is crossed by an electric current of intensity 100 mA. What is the potential difference at the terminals of that conductor?
Answers
Answer:
1.0 V
Explanation:
Step 1: Given data
Resistance of certain conductor (R): 10 ΩCurrent's intensity (I): 100 mAPotential difference at the terminals of that conductor (V): ?Step 2: Convert "I" to Ampere
We will use the conversion factor 1 A = 1000 mA.
100 mA × 1 A/1000 mA = 0.100 A
Step 3: Calculate the potential difference
We will use Ohm's law.
V = I × R
V = 0.100 A × 10 Ω = 1.0 V
i need help asap :( i’ll give you brainliest
Answers
Answer:
a.0.837 moles of silver phosphate
b. 14.55
c. 2.61
Explanation: it is all about the molar ratio so the numbers of front of the molecular formulas there is a 3 in front of the silver nitrate and the other 2 we are asked abuoit have no number so that is a 1 so you are multiplying or dividing by that ratio whichever way you go
How many primary consumers are pictured in the food web? 1 2 3 4
Answers
Answer:2
Explanation:
The sound made by crickets occurs when the male crickets rubs its two hind legs together. Which type of energy transformation results in the sound made by crickets?
A.sound energy to thermal energy
B.thermal energy to chemical energy
C.mechanical energy to sound energy
D.mechanical energy to chemical energy
Answers
Answer:
You can simply use process of elimination to find your answer. The only option that results in SOUND energy is C. Therefor your answer would be C.
Explanation:
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The rubbing of the hind legs by crickets converts the mechanical energy to sound energy. Thus, option C is correct.
Crickets have been the nocturnal animals that sleep in the daytime and were awake at the night. The crickets have been consisted of the front limbs and hind limbs with a pair of wings that support them to fly.
The crickets make the sound by the rubbing of the legs, thereby creating the vibrational sounds that have been sound energy.
The rubbing of legs has been utilized as the mechanical energy or the energy of doing work. The mechanical energy has been converted to the vibrational energy that contributes to the energy of the sound waves, thereby the sound energy.
Thus, the rubbing of the hind legs by crickets converts the mechanical energy to sound energy. Thus, option C is correct.
For more information about the energy transformation, refer to the link:
https://brainly.com/question/10555430
I WILL GIVE BRAINLIST!!!!!!!!!!!!!!!!!!!!!! PLZZZZZZZZZ HELPPPPPPPPPPPPPP
Explain how proper motion will affect the constellation as seen from the earth.
Answers
A white salt containing an unknown metal has the formula MCl and gives a lilac flame during a flame test. the salt could be
NaCl
B:
MgCl
C:
KCl
D:
LiCl
Answers
Answer:
C
Explanation:
KCl - the flame test for Potassium produces a lilac flame
The metal in the salt has been potassium, and the salt has been KCl. Thus, option C is correct.
The flame test has been performed with the burning of the salt under the flame. The electrons of the elements after gaining the energy have been excited to the higher energy level.
There has been the returning of the electrons to the ground state. In the process. the absorbed energy has been released in the form of visible radiations. The determination of the radiations results in the determination of the metal, as each metal has a unique flame.
The burning of the salt results in the lilac flame. The flame has resembled the burning of potassium. Thus, the metal in the salt has been potassium, and the salt has been KCl. Thus, option C is correct.
For more information about the flame test, refer to the link:
https://brainly.com/question/6357832
2. According to the graph below, what temperature will result in the highest rate of photosynthesis?
100+ Oxygen flow (LH)
80
60
40
20
0
Temperature (°C)
10
20
30
40
50
O A.5°C
O B. 40°C
O C.30°C
OD. 25°C
Answers
Answer:
D 25°c is the highest rate of photosynthesis.
Nitrogen gas (N2) and hydrogen gas (H2) react to produce ammonia (NH3).
If we have 2 mol of N2, how many moles of NH3 will be produced?
1 mol NH3
2 mol NH3
3 mol NH3
4 mol NH3
Answers
Answer:
I believe it would be 2
Explanation:
if there are 2 nitrogen molecules then there would have to be 2 hydrogen molecules but this could be completely wrong
if this happens to be right, ur welcome :3 here's a Jay Jay pic for u cuz why not
Answer:
Anwer is A 0.60
Explanation:
Nitrogen (N) and hydrogen (H) react with each other to produce ammonia (NH3). This reaction is shown in an equation as N2 + 3H2 → 2NH3. What is the ratio of nitrogen atoms to hydrogen atoms in ammonia?
Answers
Answer:
the ratio is 1:3
Explanation:
you must find it
Energy in a chemical reaction can be identified as which of the following?
A.) Heat
B.) Light
C.) ∆H
D.) 2,000Kj
E.) All of the above
Answers
Helpppppppppppppppppp
Answers
the answer is deceleration.
What is the Molarity of 0.250 L of solution containing 4.32 g of magnesium
phosphide (Mg3P2)?
A. 0.128 M
B. 0.312 M
C. 1.13 M
D. 1.97 M
Answers
H2SO3
What does this stand for?
Answers
Answer:
It means Sulfurous Acid
Explanation:
The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a
Answers
Answer:
Physical change
Explanation:
The molecules are being rearranged as the water changes phases from liquid to gas, but this doesn't change the chemical structure of the water.
What chemical burns red?
Answers
Answer:
Strontium chloride
Explanation:
get that W
Answer:
Strontium chloride or strontium nitrate
Explanation:
Small children are occasionally injured when they try to inhale helium from a compressed helium tank. If a small child tries to transfer the contents of a 5.0 L tank of helium at a pressure of 125 atm and a temperature of 20⁰C into its lungs, how many moles of gas would the child inhale?
Answers
Answer:
26.0 moles
Explanation:
Given the formula;
PV =nRT
P= pressure of the gas
V = volume of the gas
n = number of moles of the gas
R = gas constant
T = temperature
n = PV/RT
n = 125 * 5/0.082 * (20 + 273)
n = 625/24.026
n = 26.0 moles
what are the resulting elements and compounds of a chemical reaction called?
i need the answer in 2 minutes.
Answers
Answer:these starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products
Explanation:I hope this helps
What is an atomic number? An atomic mass?
Answers
Answer:
The atomic number is the number of the elements inside the periodic table and the mass is the weight or a number under the elements.
Explanation:
Correct me if I am wrong
Answer:
Atomic number
The number of protons in the nucleus of an atom.
Atomic Mass
The mass of an atom of a chemical element expressed in atomic mass units.
The Milky Way Galaxy is made up of billions of stars. Which of the following best describes the shape of the Milky Way Galaxy
OA. a sphere
OB. a pyramid
C a spiral
OD
a cube
Answers
Answer:
It's spiral for any of my study island people.
Explanation:
Pls help I need help with this ..
Answers
Answer:
iTS FLIPPED
Explanation:
Answer:
i don't know sorry so lets be friends
The statement “Matter cannot be created or destroyed during a chemical change.” is known as