Answer:
a reaction in which oxidation numbers change
Explanation:
here you go happy to help
Someone please help will mark as brainliest
Answer: They heated the water
Explanation:
The hotter the water was the quicker the sugar dissolved
How many liters is equal to 2,000 mL
Answer:
2L
Explanation:
Answer:
2 Liters is equal to 2,000 mL
Explanation:
In one liter, there is 1,000 milliliters. Therefore, 2 liters is equal to 2,000 milliliters.
Hope this helped!
What do you notice about the relationship between the force strength and the size of the velocity change?
Answer:
a mass is constant during -free-weight training,a greater impulse will result in greater velocity.therefore as a generation of force greater than weight of the resistance increases.
CAN SOMEONE PLEASE PLEASE PLEASE HELP ME, What is the mass of a carbon atom with 8 electrons and 9 neutrons?
What made Mendeleev certain that he should leave gaps in his table?
Answer:
Mendeleev left gaps in his periodic table because he knew that these elements existed, but had not yet been discovered. He believed that the elements would be eventually found and would fit perfectly into the gaps. Two such elements are Germanium and Gallium.
Explanation:
Which of the following is a covalent compound?
A BaCl2
(B) CHO
c) LiOH
D KNO3

Answer:
(B) CHO
Explanation:
A covalent bond is a bond type usually formed between non-metals that have little to no electronegativity differences between them.
Bonds between metals and non-metals are usually ionic in nature. All the other given choices are ionic and a combination of covalent bond.
CHO contains non-metals that are electronegative. There will be sharing of electrons between these atomic species and this will lead to a covalent bond.
__NaCI + __F2=__NaF + __CI2
Answer:
2 NaCl 2 + F2 = 2NaF + 2Cl2
CAN SOMEBODY HELP WE SUMMERIZE THIS SMALL ARTICLE, WILL GIVE BRAINLIST!! :D
Homeostasis is a term that is used to both describe the survival of organisms in an ecosystem and to describe the successful survival of cells inside of an organism. Organisms and populations of organisms can maintain homeostasis in an environment when they have a steady level of births and deaths. It is similar to the idea of equilibrium. When discussing the internal workings of an organism, homeostasis describes an environment that supports the survival of cells. All of your body's systems work together maintain homeostasis inside of your body. Homeostasis is achieved by making sure the temperature, pH (acidity), and oxygen levels (and many other factors) are set just right for your cells to survive. Homeostasis levels are different for each species. A stimulus (plural: Stimuli) are things that cause an organism to perform an activity or start a reaction. The reactions or responses are what occur in response to the stimuli like vomiting or having a fever.
Quick summary:
Homeostasis describes an environment that supports the survival of cells. It is achieved by making sure the temperature, pH (acidity), and oxygen levels (and many other factors) are set just right. All of your body's systems work together to maintain homeostasis inside your body.
key sentences:
-Homeostasis is a term that is used to both describe the survival of organisms in an ecosystem and to describe the successful survival of cells inside of an organism.
-Organisms and populations of organisms can maintain homeostasis in an environment when they have a steady level of births and deaths.
-It is similar to the idea of equilibrium.
-All of your body's systems work together maintain homeostasis inside of your body.
-Homeostasis is achieved by making sure the temperature, pH (acidity), and oxygen levels (and many other factors) are set just right for your cells to survive.
Summary paraphrased a bit: (Might not 100% make sense grammatically, but it can be a decent guide)
Homeostasis describes an environment which promotes cell survival. It is done by ensuring that the levels of temperature , pH (acidity), and oxygen (and several other variables) are set just right. To maintain homeostasis within your body, all of your body's systems work together.
what is the simplified definition of osmosis?
Answer:
Movement of water through a living cell
Explanation:
movement of a solvent (such as water) through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane.
- Merriam Webster
Answer:
Movement of a solvent through a semipermeable membrane into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane.
Hope this helps!!
What drives an electrolytic cell?
A. A spontaneous redox reaction
O B. Electrolytic solutions
O C. An external voltage source
D. A salt bridge filled with ions
Answer:
C. An external voltage source
Explanation:
An electrolytic cell converts electrical energy from an external voltage source into chemical energy that drives a reaction.
The external voltage source is usually a battery. This energy form generated from the battery helps to drive chemical reactions.
The process involves the decomposition of an ionic compound by means of current passed into the aqueous or molten form of the compound through conductors known as electrodes.
Answer:
C. external voltage source
Explanation:
Just took the quiz
From the images, what can you infer about the wings of the bat and the butterfly? A. They have a similar structure but perform a different function. B. They have a similar structure and perform a similar function. C. They have a different structure and perform a different function. D. They have a different structure but perform a similar function.
Answer:
D. They have a different structure but perform a similar function.
Explanation:
They are different shaped wings but both used to fly
Answer:
answer is D
Explanation:
D : They have a different structure but perform a similar function.
I mean, its obvious, they both have a different shape and structure but still perform the same functions or actions ( they both fly ).
also, i took the test..
Thank you for taking the time to read, have a great day!
Organisms that use light energy from the sun to produce food are called autotrophs. Organisms that CANNOT use the sun’s energy to make food are called heterotrophs.
True or False
The Answer :
-True
:) hope i helped
What is produced during the replacement reaction of Cu(NO3) and zn
Answer:
Cu, Zn(NO3)2
Explanation:
Zn is more reactive than Cu, so Cu will be displaced (replaced) in the reaction above.
Answer:
actually it is...
Explanation:
Zn (NO3)2 +Cu
A soccer ball was kicked. It had the mass of 0.42 kg and accelerated at 25m/s². What was the force?
Answer:
The answer is 10.5 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
from the question we have
force = 0.42 × 25
We have the final answer as
10.5 NHope this helps you
I need help finding the formulas of these ionic compounds
Lithium Phosphide
Cesium Nitride
Potassium Iodide
Barium Fluoride
Rubidium Nitride
Barium Oxide
Explanation please if you can <3 I will give brainliest and rate 5 stars.
Animals have to eat other things to get their food, but plants can make it themselves.
A. producers
B. glucose
C. chloroplast
D. consumers
cats or dogs...? I need to know. V.S.
Answer:
I like both but if I have to choose one then it would be dogs
Explanation:
What occurs when water droplets in the atmosphere become heavier than the air surrounding them can hold? A. fog B. clouds C. lightning D. precipitation
Answer:
D. precipitation
Explanation:
When this occurs it causes precipitation, also known as rainfall. This is all part of the water cycle. Heat from the sun heats up the water on land to the point where it evaporates and accumulates and condenses in order to form clouds. Then as mentioned in this question the water droplets in the atmosphere become so heavy that the air cannot hold them and they drop in liquid form back down to the Earth until the process is repeated.
Answer:
D. Precipitation
Explanation:
The answer on Study Island is...
D. Precipitation
The____focuses light the pupil takes in and changes shape too focus.
A.Lens
B.Sclera
C.Eye
D.Retina
SOMEONE HELP ME PLS!!!!
Describe as fully as you can what happens when magnesium reacts with iodine to make magnesium
Answer:
I think the Magnesium loses 2 electrons and forms a Mg2+ ion. Iodine gains 1 electron and forms an I- ion
Please help this is my chemistry work
The densities of various substances are listed in the chart. All of these substances have the same
volume of 2 mL. Which object has the greater mass?
Answer:
The object with the greatest density
Explanation:
The object that will have the greatest mass from the given choices is the one with greatest density.
Density is the mass per unit volume of a substance;
Density = [tex]\frac{mass}{volume}[/tex]
We can see that density is directly proportional to the mass and inversely proportional to the volume.
The more the mass and the lesser the volume, the higher the density.
So, since the volume is the same, and mass is directly proportional to density, the object having the highest density will have the greatest mass.
A student was measuring the ratio of a circle’s circumference and diameter. They found the circumference to be 6.28 cm and the diameter to be 1.8 cm. The actual ratio (circumference divided by diameter) was 3.14. What was their percent error?
Answer:
Percent error = 11%
Explanation:
Given data:
Circumference = 6.28 cm
Diameter = 1.8 cm
Actual ratio of circumference and diameter = 3.14
Percent error = ?
Solution:
Formula:
Percent error = ( measured value - actual value / actual value) ×100
Measured value:
Measured ratio of circumference and diameter = 6.28 cm/1.8 cm
Measured ratio of circumference and diameter = 3.49
Now we will put the values in percent error formula.
Percent error = (3.49 -3.14 / 3.14) ×100
Percent error = (0.35 / 3.14) ×100
Percent error = 0.11×100
Percent error = 11%
How many molecules are in 0.75 moles of water (H2O)
Answer:
The answer is 4.52 × 10²³ molecules
Explanation:
The number of water molecules can be found by using the formula
N = n × Lwhere n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 0.75 × 6.02 × 10²³
We have the final answer as
4.52 × 10²³ moleculesHope this helps you
7. Aluminum, iron, copper, and oxygen are all examples of which of the following?
Answer:
Explanation:
Elements
Students combined baking soda and vinegar to demonstrate a chemical reaction. What indicates a chemical reaction has occurred?
Answer:
How you know a chemical reaction occurs is by odor, energy change, gas bubbles, precipitate formation and color change. Most of which are included in this experiment.
Explanation:
Given these ions, when they combine what is their formula? *
K1+
Se2-
Answer:
KSE+1
Explanation:
HAVE A LLOK AND U WILL SEEE IT
Which of the following pictures correctly show the structure of the H+ ion? Click on the picture to see each choice.
Answer: The answer is the one with the letter P in the red circle.
Explanation:
Answer:
this
Explanation:
because
does anyone know this??
Answer:
9 moles of N2
Explanation:
Well first you balance the equation which would be N2+3 H2>2 NH3. But you need 18 miles of NH3 so you would just replace the 2 moles of NH3 with 18 and balance the rest of the equation from there. And you would get 9 N2 + 27 H2>18 NH3
