Answer:
its a
Explanation:
Answer:
c
Explanation:
In your own words, describe the process of convection.
Answer:
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat
Explanation:
<3
Answer:
Convection when heat travels through metal or appliances.
Explanation:
What is a primary difference between bacteria that are
in the kingdom Archaea and other bacteria?
Answer:Both atractive and repulsie
Explanation:
Which of the following is a standardized and convenient unit to use for comparing distances across the Solar System?
A
the distance from the Sun to Earth
B. the distance light travels in one year
C the distance Mercury travels in one year
D. the distance Earth travels around the Sun
Need help fast plzzz!!! Please help.
Answer:
1. 0.5333333m (Calculator Soup Work Calculator)
2.
9. 29.1666666667% efficient
10. 44.5% efficient
Explanation:
will do other answers later
True or False vacuoles direct cell activities by sending instructions to different parts of an animal cell
Answer:
False
Explanation:
The nucleus controls the cells activities
Dylan puts two magnetic toy trains very close to each other on a track. What will happen next, and why?
To slow down the flow of electrons in a circuit is called
Answer: Resistance slows down the flow of charge in a circuit. The unit of resistance is the ohm (Ω) which is defined as a volt per ampere of current.
Explanation:
The correct coefficients needed to balance the following reaction are:
___ PbI2 + ___ ZnS → ___ PbS + ___ZnI2
a) 1, 2, 2, 1
b) 1, 1, 1, 1
c) 1, 1, 2, 2
d) 2, 1, 1, 2
A book that slides off a desk will fall to the floor. What is it the moves the book and all other objects, downward?
Group of answer choices
Friction with other objects
Air pressure pushing from above
The force of gravity
Earth's magnetic fields
Answer:
Answer down below!
Explanation:
It would be the force of gravity, because gravity pulls all things toward the center of the Earth. If the book would have fallen down, the force of gravity was put in place.
Answer: The force of gravity
Explanation:
gravity is a force the brings thins towards the core, aka the ground
Calculate the ratio of H+ ions to OH– ions at a pH = 6. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide. Then divide the H+ concentration by the OH– concentration. Record this calculated ratio in Table A of your Student Guide. Compare your approximated and calculated ratios of H+ ions to OH– ions at a pH = 6. Are they the same? Why or why not? Record your explanation in Table A. What is the concentration of H+ ions at a pH = 6? mol/L What is the concentration of OH– ions at a pH = 6? mol/L What is the ratio of H+ ions to OH– ions at a pH = 6?
Answer:
Answer:
You must know the concept of pH of a solution and its relation to the concentration of H+ and OH- ions. pH is a measure of the substance's acidity or basicity. From the definition of Arrhenius, an acid contains an H+ while a base contains a OH- ion. From this definition, we can say that an acidic substance has a higher concentration of H+ ions. Now, I'll introduce here that pH is the value of the negative logarithm of the concentration of H+. In equation,
pH = -log[H+]
The term pOH is therefore also, pOH = -log[OH-]. Therefore, the relationship that connects the two negative logarithms is:
pH + pOH = 14
The pH scale starts from 1 being the most acidic to 14 being the most basic. The neutral pH is 7. Thus, for a pH of 7, the H+ and the OH- concentrations are equal.
pH = 7 = -log[H+]
[H+] = 1×10⁻⁷ mol/L = [OH-]
Since the concentrations are equal, the ratio is equal to 1.
Why does everyone keep saying I should call Uraraka “red cheeks” instead of “pink cheeks” (=_=)
i dont know man they're weird
What are the characteristics of the three states of matter?
Solid:
Liquid:
Gas:
Do you think this one experiment is enough to change the scientific theory regarding the speed of light?
No. The speed of light does change. You mean speed of light in a vacuum. Measuring that value is elementary, in a 2-way measurement, as you show.
Can you please help me !!
Answer:
Explanation:
A) O2 (non polar covalent)
B) HF (polar covalent)
C) NaCl (because its ionic)
im not 100% sure hope it helps
PLS HELPPPP ME!!!!
What term do we use when the moon's light is going away and the moon seems
to be "shrinking" each day? Hint: Karate Kid: "Wax on wane off.”
HELPP PLSSSSS
huryyyyyy plsssssssssssssssssss
Answer:
B.
Explanation:
bc it goes from having the potential to move to moving sorry if im wrong tho
Vectors are arrows that tell us two things about force...WEIGHT and DIRECTION
True
False
When a logger cuts down a
tree, what type of change is
happening to the tree?
A. Physical change
B. Chemical change
'C. Mixture change
Answer:
A
Explanation:
Answer:
A
Explanation:
The original chemical structure of the tree is not changing, therefore it is not a chemical change, and it is definetely not a mixture change, its a physical change.
what is 15 /2.343*233+2341
if you are reading this you like the person you are sitting beside or just beside or will sit beside next.
Answer:
3832.67
Explanation:
Bread is made with which fungus?
morel
yeast
mold
chytrid
Answer:
yeast
Explanation:
sorry if incorrect
Which of the following pairs of elements is most likely to form an ionic bond?
A.
nitrogen and oxygen
B.
lithium and chlorine
C.
phosphorus and chlorine
D.
selenium and bromine
Answer:
B.
lithium and chlorine
Explanation:
Ionic bonds are typically formed between a metal and nonmetal. Lithium is an alkali metal in group one and chlorine is a halogen from group seven. They will bond to form the salt, lithium chloride.
Which of these can be used as an inert electrode?
copper
platinum
silver
zinc
Answer:
I believe it is platinum
Explanation:
I think it is, haha
Answer:
zinc
Explanation:
kwkejnrkewnrkwe
Compared to Earth, Mercury rotates on its axis very slowly. Based on this information, what can you conclude about Mercury?
O Mercury applies weaker gravitational forces on objects.
O The length of a day on Mercury is much longer than Earth.
O Mercury has no atmosphere.
O The surface of Mercury is rocky.
PI
Hidderi
Answer:
2nd down
Explanation:
''The length of a day on Mercury is much longer than Earth'' is the right answer.
Daylength on Mercury as compared to earthMercury rotates on its axis very slowly due to which daylength on Mercury is much longer than Earth. A day on Mercury is 1407.5 hours long while a day on Earth is 23.934 hours long and its reason is slower rotation of Mercury so we can conclude that ''The length of a day on Mercury is much longer than Earth'' is the correct option.
Learn more about Mercury here: https://brainly.com/question/879
What is the volume of 55 grams of carbon dioxide at STP
A. 2.45 L
B. 28 L
C. 1.25 L
D. 12.5L
Answer:
A. 2.45 L - Answer my answers is right.
What is a unwanted change in the environment caused by substances or from of energy??
Answer:
pollution I think
Explanation:
write out the products that would be created during this neutralization reaction H2SO4 + Cu(OH)2
Answer:
H2SO4+CU(OH)2 = CUSO4+2H2O
The general neutralization reaction between an acid and a base takes the form: acid + base → salt + water.
If you have some acid HA neutralizing some base BOH, the salt would be an ionic compound composed of the conjugate acid of BOH (i.e., B⁺) and the conjugate base of HA (i.e., A⁻).
Applied here, H2SO4 and Cu(OH)2 would react to form a salt CuSO4 (the Cu²⁺ ions coming from the copper(II) hydroxide and the SO4²⁻ ions coming from the sulfuric acid) and H2O.
Thus, the products of this neutralization reaction would be copper(II) sulfate (CuSO₄) and water (H₂O).
The balanced equation for this reaction would accordingly be:
H₂SO₄ + Cu(OH)₂ → CuSO₄ + 2H₂O.
What do you think is the primary reason why the Unionid mussel population declined whenever there is a dramatic increase in the Zebra mussel
Answer:
When the Zebra arrived they ate all the food so the Unionid mussels declined as they died from the lack of food. Causing the Zebra Zebra numbers to increase and Unionid numbers to decline.
What is a endothermic reaction
Answer:
Basically, it's heat transfer!
Good luck!Answer:
An endothermic process is any process with an increase in the enthalpy H of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.
Explanation:
Isotopes are atoms of the same element that have different O principal chemical properties, masses. O numbers of protons, O numbers of electrons.
Answer:
Different atomic mass, number of neutrons
Explanation:
Isotopes refer to atoms of the same element, with same atomic number, number of protons & electrons. However, they have different atomic mass, because of different number of neutrons.
Hydrogen is the first element on
the periodic table. How many
protons does it have?
A. one
B. 118
C. it varies