Answer:
Temperature will revert to room temperature after the substance reacts fully. Heat energy flows between the chemical bonds of the added substance and water to the surroundings (elsewhere in the water, the beaker, a student's hand that touches the beaker).
Explanation:
Hot packs and cold packs eventually return to room temperature because of thermal equilibrium
Temperature is the degree of hotness or coldness of a body. We have to note that bodies often tend to attain thermal equilibrium with the surroundings. Hence heat flows from or to the body as required.
Hence, the need to attain thermal equilibrium with the environment is the reason why hot packs and cold packs eventually return to room temperature.
Learn more about thermal equilibrium: https://brainly.com/question/1301963
how do different stimuli affect the survival behavior of an organism?THIS IS THE SECOND TIME IM ASKING PLZZZZ HELP ME
Answer:
Organisms change their behavior in response to changes in the surrounding environment.
Explanation:
All living things can respond to stimuli in the exterier environment, It is a form of energy—light waves or sound vibrations, From what they sense they will make neccisary changes to their diet and or where they are located.
Such as winter weather which is a type of stimulus will cause some animals to start hibernating.
Which best describes sodium chloride (NaCl)?
Answer: NaCl is an ionic compound
Explanation: Sodium Chloride is formed from Na+ and Cl- ions.
It is soluble in water, it has crystalline structure, it has high melting point and
It is insulator as solid form. Water solution leads current.
Light has both magnetic and electric fields. Scientists call this *
Answer:
I think is electromagnetic radiation (light)
Explanation:
If i get it wrong i am sorry
Please help me with 6 7 8 and don’t send me a link tell me here please
Answer:
6 b physical properties
7b melting point
8 boiling
3Ca + 2AlCl3 --> 3CaCl2 + 2A1
Answer:
single displacement
in order to produce 3 moles of o2 how many moles of NaClO3 are required
Answer:
2 moles NaClO3
Explanation:
2NaClO3 --> 2NaCl + 3O2
moles NaClO3 = 3 moles O2 x (2 moles NaClO3/3 moles O2) = 2 moles
conversion factor: 2 moles NaClO3 = 3 moles O2
In order to produce 3 moles of [tex]O_{2}[/tex], the chemical reaction needs to be balanced. the required number of moles of [tex]NaClO_{3}[/tex] are 2.
What is a balanced chemical reaction?When the reactants undergo a chemical reaction, the number of moles on both the reactant and the product side must be balanced.
The chemical reaction of [tex]NaClO_{3}[/tex] is
2 [tex]NaClO_{3}[/tex]⇄2NaCl + 3 [tex]O_{2}[/tex]
On the left side, 2 moles of [tex]NaClO_{3}[/tex] breaks into 2 moles of NaCL and 3 moles of [tex]O_{2}[/tex]. on the right side. Therefore, both side have an equal number of moles of each element.
Hence, two moles of [tex]NaClO_{3}[/tex] is required to produce 3 moles of [tex]O_{2}[/tex].
Learn more about a balanced chemical reaction.
https://brainly.com/question/22817140
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11. Can you identify an element using the following? (Put yes or no)
A. Number of Protons =
B. Number of Neutrons =
C. Mass Number =
D. Atomic Number =
12. (Yes or No) are the following Isotopes?
A. C - 12 & C - 14
B. CI - 35 & Ca - 40
C. Fe - 56 & Fe - 56
Answer:
11.a
12a
#hopeithelps
#carryinlearning
Explain why Noble Gases (group 18 elements) have little/no electronegativity
Answer: they don't have values there because they aren't on the pauling scale of electronegativity, as they don't form any compounds with other elements. However, argon and neon can technically form compounds with other elements; it is just extremely unlikely.
Explanation:
Nearly all weather occurs in the layer of the atmosphere called the
A. stratosphere B. ionosphere C. mesosphere D. troposphere
Answer:
Troposphere
D.
Explanation:
The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level. We humans, live in the troposphere, and nearly all weather occurs in this lowest layer.
Sweat and releasing thermal energy from blood vessels are ways the skin helps control body temperature. Group of answer choices False True
memeemme eemmememmememmemmeemmeemememmemmemememmee Explanation:
An elements identity is decided by how many_____
it has.
Answer:
Number of protons!!
Explanation:
Answer:
An elements identity is decided by how many PROTONS it has.
which place is a likely location for primary succession
Answer:
Places where primary succession occurs
include newly exposed rock areas, sand dunes, and
lava flows.
Please help! How many grams is 4.5 x 10^27
Answer: The answer is 4.5e+27 grams, I hope I helped!
Explanation: N/A (I threw away my paper ^^")
How is an ion formed
How and why does heat affect matter (pls explain thoroughly)
Answer:
Solids, liquids and gases all expand when heat is added
Explanation:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ...
which kingdom does extreme microbe belong to
Answer:prokaryotes
Explanation:
A compound is found to have a composition of 35.880% Cr, 21.076% P, and 43,545% O
What is the empirical formula of the compound?
Explanation:
Cr=35.880/51=0.73≈0.7
P=21.076/31=0.67≈0.7
O=43.543/16=2.71
Divide each by 0.7 u get
Cr=1 ,P =1, O=4
Empirical formula is CrPO4
Which statement best describes the temperature of the ocean's surface water?
A. Areas with a high salinity have the coldest water.
B. Areas at high latitudes have the coldest water.
C. Areas with a low density have the coldest water.
D. Areas close to the equator have the coldest water.
Answer:
d
Explanation:
How can the speed of solvent molecules be slowed down?
A. by increasing the temperature
B. by increasing the surface area of the solute
C. by increasing the pressure
D. by decreasing the temperature
E. by decreasing the surface area of the solute
A. by increasing the temperature
B. by increasing the surface area of the solute
C. by increasing the pressure
D. by decreasing the temperature
E. by decreasing the surface area of the solute
what would life be like if we couldn’t change reaction rates?
Answer: if a biochemical reaction in our body is too fast or too slow it can endanger our life.
Explanation:in other example ,rate of reaction is obviously very important to the chemical industry. The rate of reaction dictates the rate of production our daily products.
If you solve both then will absolutely mark brainly but,ASAP
Explanation:
1. B gathers information from the enviroment
2.nuerons
hope this helps
A loop of wire moving through a magnetic field will create which of the following?
Magnetic force
An electric current
An electric force
A magnetic domain
A loop of wire moving through a magnetic field will create which of the following?
(A) Electrical Current
I am pretty sure that electromagnetic Induction states that moving a magnet through a loop of wire creates . Electrical Current. I consider this option to be correct because according to lenz's law conductor moves through loop and to be more exact in this case through an electrical current. I hope it help!
PLz help mee I really need the answer
Answer:
sodium ,Na and magnesium,Mg
Is this correct please check!!!
Answer: yes it has to be
Explanation: i have done this answer before and got a 100 but dont remember all the answers
How many moles of tungsten atoms are there in 4.8 x 10²⁵ atoms of tungsten? *
Answer:
The no. of moles of tungsten contains (4.8 x 10²⁵ atoms) = (1.0 mol) (4.8 x 10²⁵ atoms)/ (6.022 x 10²³ atoms) = 79.7 mol.
Explanation:
Mark brainly if you like my answer
Which factors cause weather patterns? Check all that apply.
Answer:
The five factors that determine the weather of any land area are: the amount of solar energy received because of latitude; the area's elevation or proximity to mountains; nearness to large bodies of water and relative temperatures of land and water; the number of such storm systems as cyclones, hurricanes, and ...
How many mol of water (H2O) are produced from 74.4 grams of ammonium sulfate, (NH)2SO,?
(2) H₂O
INHg), so
Answer:
yeah
Explanation:
How many mol of water (H2O) are produced from 74.4 grams of ammonium sulfate, (NH)2SO,?
I need an answer and explanation pls
Answer:
Cl2 + 2NaBr --> 2NaCl + Br2
Explanation:
This is a single displacement reaction where one side of the ionic compound switches with the other.
So, Cl2 + NaBr ---> NaCl + Br2
This isolates the Bromine and puts the Chlorine in it's place.
Then, balance out the equation like so and you should get
Cl2 + 2NaBr --> 2NaCl + Br2
When an atom of calcium (Ca) forms an ion by losing two electrons, what is the ion’s type and charge?
cation, 2+
anion, 2−
cation, 2−
anion, 2+
Answer:
cation +2
Explanation:
A cation is a positively charged ion, while an anion is a negatively charged ion. Contrary to how it sounds, when an atom loses electrons, it's charge becomes more positive. Since the calcium atom lost 2 electrons, it is a positive (+2) ion.
The electrical charge of the calcium ion is +2.
TIMES PLEASE HELP ASAP
Answer:
C
Explanation:
I took this class it's C they are balanced