Answer:
b
Explanation:
Which of the following would be used to measure the distance from London to Paris? square meter feet meter kilometer
Answer:
meters
Explanation:
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.
Please help this is my chemistry work
CAN SOMEONE PLEASE PLEASE PLEASE HELP ME, What is the mass of a carbon atom with 8 electrons and 9 neutrons?
The____focuses light the pupil takes in and changes shape too focus.
A.Lens
B.Sclera
C.Eye
D.Retina
Someone please help will mark as brainliest
Answer: They heated the water
Explanation:
The hotter the water was the quicker the sugar dissolved
SOMEONE HELP ME PLS!!!!
Which of the following compounds, when added to a solution of ammonium nitrate, will result in the formation of a buffer solution?
ammonia
nitric acid
sodium nitrate
ammonium nitrate
Answer:
nitric acid
Explanation:
couse it mix well so that we can create them
Use the periodic table to find the numbers of protons, neutrons, and electrons for atoms of the following
elements.
Answer:
Copper is symbol C because thats what it says according to the periodic table hope this helps :))))))))))))))))))))))))))))))))))))))))
Explanation:
Answer:
Sodium- 12 Neutrons
Explanation:
Sodium has 12 Neutrons
Given these ions, when they combine what is their formula? *
K1+
Se2-
Answer:
KSE+1
Explanation:
HAVE A LLOK AND U WILL SEEE IT
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
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
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:
Animals have to eat other things to get their food, but plants can make it themselves.
A. producers
B. glucose
C. chloroplast
D. consumers
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:
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 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 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.
The gas pressure in an oxygen tank is 3.90 atm at a temperature of 298 K. If the pressure decreases to 3.20 atm, what is the temperature of the gas in kelvin
Answer:
T₂ = 244.5 K
Explanation:
Given data:
Initial pressure = 3.90 atm
Initial temperature = 298 K
Final pressure = 3.20 atm
Final temperature = ?
Solution:
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
Now we will put the values in formula:
3.90 atm / 298 K = 3.20 atm/T₂
T₂ = 3.20 atm × 298 K / 3.90 atm
T₂ = 953.6atm. K /3.90 atm
T₂ = 244.5 K
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!
A lightning strike from the air may have started the fire by igniting dry vegetation. This example demonstrates interaction between which two of the Earth's spheres?
Hydrosphere and geosphere
Biosphere and hydrosphere
Cryosphere and hydrosphere
Atmosphere and biosphere
PLIS ANSERW AS FAST AS YOU CAN.
Answer:
Atmosphere and Biosphere
Explanation:
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
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
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
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.
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
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 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:
How many molecules of oxygen gas are in 3.0 mols of Oxygen gas?
Answer:
3×6.022×1023 oxygen molicules
Hope it helps
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
