Answer:
in the chemical trial.
Explanation:
WILL MARK AS BRAINLIEST IF CORRECT
Answer:
B because if it's adding more atoms but becoming more compact then it is getting smaller.
Explanation:
A student needs to make 0.855 L of a sodium bromide solution for an experiment. The concentration of the required solution is 0.350 M. How many grams of sodium bromide will he need to use?
Answer:
Explanation:
Molarity = moles/liters of solution
moles = molarity x Liters of solution
= 0.350 m/L x 0.855 L
= 0.299 mol
mass = moles x molar mass
= 0.299 mol x 102.89 g/ms
= 30.78 grams
solve this conversion of units
1. 42.89 L=_______ gal =
2. 32c=_______ K =
3. 75m=_______ in =
Describe a simple experiment that can be perfomed in tha laboratory to demonstrate the formation of iron3chloride from iron fillings
Answer:
laboratory use the organic substances dissolve in water methanol or ethanol then Sinha to rise iron chloride solution is added a transient permanent coloration usually purple green or blue indicate the presence of a funnel or an hall
Explanation:
A star is mainly made of hydrogen gas, but most classes of stars include other elements such as helium, calcium, and other heavier elements and molecules.
Group of answer choices
True
False
Standard temperature and pressure (STP) mean
Answer:
Standard Temperature and Pressure (STP) is the temperature of 0° C (273 K) and pressure of 1 atm (101.325 kilopascals). (Oxford Science Dictionary)
One mole of any gas has a volume of 22.4 dm³ at this temperature and pressure.
Which of the following describes kinetic energy?
Answer:
An object in motion.
Explanation:
"In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. "
How to calculate the frequency of a wave?
Answer:
count each wave crest
Explanation:
hope this helps
physical properties of alkaline metals
Answer:
shiny.
silvery-white.
somewhat reactive metals at standard temperature and pressure.
readily lose their two outermost electrons to form cations with a 2+ charge.
low densities.
low melting points.
low boiling points.
Explanation:
All living organisms do cellular respiration and give off carbon dioxide. TRUE OR FALSE
Answer:
false
Explanation:
All living things use cellular respiration to turn organic molecules into energy. Cellular respiration is the chemical process of breaking down food molecules in order to create energy in the form of adenosine triphosphate (ATP). ... This is called aerobic respiration.
Cellular respiration takes place in all living organism despite the level of organism and produces carbon dioxide and water.
What is cellular respiration?Cellular respiration is the process of breaking food or glucose by the action of biological catalysts to form carbon dioxide and water. This process goes through several stages including some electron transport chains
There are both aerobic and anaerobic respiration. Aerobic respiration takes place in the presence of oxygen whereas anaerobic respiration needs no oxygen.
Every living organism consume food and digest and from the food the cell makes energy by cellular respiration. Hence, the fact that all living organism do cellular respiration is true.
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who discovered periodic changes in properties of elements
Answer:
The person is Dmitri Mendeleev
Which option explains how some parts of a plant can be white?
Some parts of a plant can be white because they do not contain chlorophyll.
Chlorophyll is a term to refer to a characteristic compound of most plants that has the function of:
Bring the green color to vegetablesTake charge of the photosynthesis process.Some plants do not have as much chlorophyll in their systems. However, this does not affect their reproduction and growth because they have developed other feeding methods through their roots.
These plants that contain low amounts of chlorophyll have pale and white colorations because chlorophyll is what gives the plants their intense green color.
Note: This question is incomplete because options are missing. Nevertheless, I can answer it based on my prior knowledge.
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answer me
short answer
Explanation:
B. 1) Tritium is the isotope of Hydrogen (H).
2) Mass of an Electron is 9.10938356 × 10-³¹ Kg.
3) Molecular mass of Carbon dioxide (CO2)
=> Molecular mass of carbon = 12g
Molecular mass of oxygen= 16g
molecular mass of CO2 = [12 + (16 X 2)]g
= (12 + 32)g
= 44 g
4) Dalton has given its Atomic Theory in the year 1803.
5) Nucleus is discovered by
= Ernest Rutherford discovered the nucleus of the atom in 1911.
hope this helps you.
Which low-energy state of condensed matter is characterized by structural rigidity and resistance to changes of shape or volume?
Solid is the low energy state of condensed matter is characterized by structural rigidity
if our body is 60% made out of water why don't we evaporate?
Let's see it you guys can solve this!
Answer:
ok
Explanation:
Water has a high heat capacity, so it will be harder for the fire to evaporate it
please help! will give brainliest!!! match each of the terms on the right with the letters on the right.
Answer:
Metal -c
Explanation:
Help me please!!!!!!!
Answer:
1. 264.369
2. 1772.65
3. 3.25
4.488
5. 0.164525
Explanation: I just added 0's to the ones that didnt have as many decimals which made it easy.
Which two kingdoms are the only prokaryotes
Answer:
There are two kingdoms of prokaryotes. These are the bacteria (or eubacteria ) and the archaebacteria (or the Archaea ).
Explanation:
this ionic compound is named incorrectly.
1. find and describe the mistake
2. correctly name the compound
CaCl² - Calcium Chlorine
CuS - Copper Sulfide
Li³P - Trilithium Phosphide
CuBr - Copper(II) Bromide
NaOH - Sodium Hydrogen Oxide
1. Ionic compounds are named using the cation and the anions in the compounds respectively.
The name of the cation remains thesame as it's element while the anions name changes by adding another suffix to the elements name.
Sometimes, the number of positive charge of a cation is added in front of it's name before adding the anion's name.
2. Correct names of the compounds above
CaCl² - Calcium chloride
CuS - Copper Sulphate
Li³P - Lithium Phosphide
CuBr - Copper (1) Bromine
NaOH - Sodium Hydroxide
Read More:
When naming a compound, which of these is written first?
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The outermost shell of an atom is called Valence shell.why?
Answer:
The number of electrons to be filled in each shell depends on Aufbau's principle and Hund's rule. Valency tells us only the total number of electrons present in the outermost shell of the atom and so it is different from the atomic number. Therefore, the outermost shell of an atom is known as valence shell.
if the electron affinity for an element is a negative number, does it mean that the anion of the element is more stable than the neutral atom?
Answer: No
Explanation: It means that an electron in an atom or ion is lower in energy than a free electron.
No, the anion of the element is more stable than the neutral atom but an electron in an atom or ion is lower in energy than a free electron.
What is kinetic energy?Kinetic energy is defined as the energy of the object that occurs due to the motion of the object. The total work needed by the body to starts accelerating it by the help of given mass which is supplied from the rest position and its mentioned velocity.
The energy body gets due to the process of acceleration by this the body will able to main the kinetic energy of the body without changing the speed of the body. The energy which has been stored in the body or any object by the help of the particular position or the proper arrangement of the parts is known as potential energy.
There will be no effect of the outside environment on the potential energy that present inside the body. The kinetic energy decrease or increase with change into the velocity.
Therefore, No, the anion of the element is more stable than the neutral atom but an electron in an atom or ion is lower in energy than a free electron.
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how many chromium (II) ions would bond with 2 phosphate ions?
Answer:
ummmm I don't know of sorry
Metals have special bonds, between atoms. The valence electrons are mobile and are shared by all metal atoms present.
Metals exhibit ______ due to the mobility of valence electrons.
a)brittleness
b)high conductivity
c)low melting point
d)high solubility in water
Answer:
High conductivity
Explanation:
Metals exhibit high conductivity due to the mobility of valence electrons.
At 1 atmosphere and 20 degrees Celsius, all samples of H20(l) must have the same
A)volume B) mass C) density D) weight
(Explain)
Answer:
nice
Explanation:
one
At 1 atmosphere and 20 degrees Celsius, all samples of H₂0(l) must have the same density.
What is ideal gas equation?Ideal gas equation of gases gives idea about the behavior of gases at different conditions and it will be represented as:
PV = nRT, where
P = pressure
V = volume
n = moles
R = universal gas constant
T = temperature
After rearranging the equation, we get
P/RT = n/V
Quantities which are present on the left side all are constant and the value on the right side describes the density of the water.
Hence they must have same density.
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Please give the answer
Answer:
A. The battery. D. The wind turbine. E. The solar panels
These give us electrical energy
There is a spelling error, I believe that is supposed to say stretched bow.
By stretching back a bow you are storing (Elastic) Potential Energy.
The transformation is (elastic) potential energy into kinetic energy (with some energy lost as sound and heat)
A ball rolls down a ramp. It goes through a
straight tunnel, and then curves to the left.
Based on this information, which statement is
true about the ball's motion?
Is oxygen likely to gain or lose electrons when boding? EXPLAIN.
Answer:
yes covalent bonding is the scientific term for this. This is simply four elements in groups 15 16 and 17 to receive electrons than to lose them oxygen atoms, for example, acquired two electrons to create see you two ions. The electron configuration is similar to that of the noble gas Neon.
Question 1 of 10
What happens inside a closed car on a hot day?
A. The pressure inside the car increases.
B. The molecules of gas slow down.
C. The number of molecules increases.
D. The volume inside the car increases.
Answer:
Explanation:
What happens inside a closed car on a hot day?
A. The pressure inside the car increases.
B. The molecules of gas slow down.
C. The number of molecules increases.
D. The volume inside the car increases.
The sunlight in the closed car increases the temperature, which makes the air molecules move faster, hitting the interior walls and windows more rapidly and thus increasing the pressure.
The answer is A.
That is why you never leave car windows rolled up on a hot day with a young child or pet inside. They can get sick and possibly die from overheating.
Differentiate the particles in terms of location, charge, and relative
Explanation:
location:
charge: 89%
relative:t h e y r e f i n e , a n d so a n d t h e n
t h a n k s f o r t h e p o i n t s
We know that organisms pass traits onto their offspring through reproduction. So how is it
possible that a new trait could ever appear in a population? Wouldn't a trait have to already
exist in the population?
Answer:
There are recessive traits and dominant traits
Explanation:
recessive traits are always hidden
dominant traits are the ones that are present in an organism
some recessive traits can be passed on to offsprings to become dominant
and some dominant traits can be passed on to become recessive traits
that's life
Answer:
because of genetic variation.
Explanation:
because of meiosis and a process called crossing over, there is genetic variation and diversity in the world, with humans and animals.