Answer:
For number 5 it is the 2nd one some stants has a mass of 1.25 g And the 2nd 1 number 6It is the 1st 1A subject has a melting point of 40
Which of the following correctly
states the difference between
elements and compounds?
Elements and compounds are the
same because they are both made of
atoms,
An element is made of two or more
types of atoms combined, while a
compound is made of one type of
stom,
An element is made of one type of
tcom, while a compound is two or
more types of stoms combined.
Answer:
An element is made of one type of atom, while a compound is two or
more types of atoms combined.
Explanation:
An element is a distinct substance that cannot be split up into simpler substances. Elements are substances that consists of only one kind of atom.
Compounds are substances composed of two or more kinds of atoms/elements joined together in a definite grouping.
There are over a hundred elements known to date. Each one of the elements is symbolized by a capital or a capital letter followed by a small letter derived from English, Latin or Greek Examples are copper, gold, ironThe properties of a compound are distinct and different from those of the individual elements that are combined in its make up. There are several millions of compounds known. They are usually represented by chemical formulae.As we can see, compounds are indeed made up of more than one types of atoms whereas an element is made up of just one single atom.
Use the PhET simulation to identify what happens to the concentrations of a dilute Drink mix mixture or a pure Drink mix solution for the following scenarios. A pure Drink mix solution can be obtained by draining all the mixture, then adding Drink mix to the container as a Solution (radio button in the upper right area of the simulation). Note that the Concentration meter can be placed toward the bottom of the container or in the stream of the Drink mix. Drag the appropriate items to their respective bins.
Hello user, you did not add a picture of an attachment to enable me help you solve this problem. Please check the attachment I added i believe it is the question that needs to be solved.
Explanation:
1. In the first column
INCREASE CONCENTRATION: these are the items that needs to be placed in this bin
a. Add drink mix solid to a diluted mixture of drink mix in pure water
b. Add drink mix solution to a diluted mixture of drink mix in pure water
c. Add drink mix solid to pure drink mix solution
d Evaporate water from a diluted mixture of drink mix in pure water
e Evaporate water from pure drink mix solution
2. The items below are what should be placed in this bin,DECREASE CONCENTRATION:
a. Add water to a diluted mixture of drink mix in pure water
b. Add water to pure drink mix solution
3. These items here should be placed here. DOES NOT AFFECT CONCENTRATION:
a. Add pure drink mix solution to pure drink mix solution
b. Drain the pure drink mix solution
c. Drain the diluted mixture
A gas has a volume of 50mL at a pressure of 2 atm. Increase the volume to 200mL, and the temperature remains constant. What is the new pressure?
Answer:
The answer is 0.5 atmExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we are finding the new pressure we have
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
We have
[tex]P_2 = \frac{50 \times 2}{200} = \frac{100}{200} = \frac{1}{2} \\ [/tex]
We have the final answer as
0.5 atmHope this helps you
In which direction does heat energy move? (2 points)
a
From cold objects to colder objects
b
From colder objects to warmer ones
c
From warmer objects to colder ones
d
From warm objects to warmer objects
Answer: C.
Explanation:
This is called entropy I believe. (it wouldn't let me answer before)
What is an Ionic Bond and what types of elements are likely to form Ionic Bonds?
Answer:
ionic bonds also called electrovalent bonds areee bonds that exist two metals.It is an electrostatic attraction between positive and negative ions in a Crystal lattice.
Explanation:
examples of elements with this bond are
hydrogen chloride
copper oxide
potassium bromate
can you guys match the words to the definitions for my science work on thermal energy please❤️?
Answer:
i dont feel like typin the whole definition so im jus gonna type the number with the word
1- temperature
2- laws of conservation of energy
3- boiling point
4- freezing point
5- joule
6- thermal energy
7- heat
8- solid
9- liquid
10- gas
Answer:
hey guys
Explanation:
hope this helps you to do something good
What element is [Xe]6s24f5d6
Answer:
Holmium
Explanation:
Electronic configuration:
[Xe] 6s² 4f⁵ 5d⁶
To know this element, we must first find the atomic number and then look for its position on the periodic table.
Number of electrons in [Xe] = 54;
So the total number of electrons = 54 + 2 + 5 + 6 = 67
This element has an atomic number of 57. On the periodic table, it is Holmium
Forecasting the weather for a specific area is relatively easy because of all the technology that is available.
A. True
B. False
Answer:
A
Explanation:
PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
Answer: I think G.
Explanation:
Answer:
I believe its student 2 as well. it's most definitely g
If an object is suspended in a fluid, neither sinking nor floating, then:
A) The buoyant force is larger
B) The buoyant force is smaller
C) The Buoyant force is equal to the density
D) The buoyant force is equal to the weight
A student was asked to name an element that reacts like chlorine (Cl). Which element should the student name?
Answer:
Bromine (BR2)
Explanation:
Cl2 + Br2 = ClBr
E. Give evidence to support or dispute: "In nature, the chance of finding one isotope
of an element is the same for all elements." (this objective is completed by
responding to question 2 below)
Answer:
This question appears incomplete
Explanation:
However, the chance of finding one isotope of an element is not the same for all elements because some elements/isotopes are more in abundance than some other elements/isotopes; for example the most abundant element on earth is nitrogen-14, hence the chances of finding nitrogen-14 in nature is higher the chances of finding any isotope of Xenon.
Also, while isotopes occur naturally, some do not. Hence, the chances of finding a naturally occurring isotopes (no matter how rare like Xenon-126) is higher than the chances of finding artificial radioisotopes like technetium-95 and promethium-146 (whose chances are zero because they cannot be found naturally occurring).
How is this correct.how is this not wrong.Did you get it right.If you did explained please.
How can changing the shape of an object lower its overall density?
I need help on this, the question in here:
Answer:
The wheel size does not affect the speed of the skateboard.
Explanation:
This is true because Nikki's average time goes up while Lisa's goes down, so it depends on how hard they are pushing the skateboard with their foot.
30 points!!! please help chem question
Answer: below -45
Explanation:
Which state of matter is found in stars and does not contain electrons within its atoms
Answer:
Interstellar medium (ISM)Explanation:
In astronomy, the interstellar medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays.
I tried, I hope it helps :)
CHOOSE ALL THE ANSWERS THAT APPLY. Which of the following equations are balanced?
O 2Fe + Cu(NO 3) 2 → 2Cu + Fe(NO 3) 2
O 2K + 2H 2O → H 2 + 2KOH
O Li + Cl 2 → LiCl
O 2H 2 + O 2 → 2H 2O
O 2S + 3O 2 → 2SO 3
Answer:
#2, 4, & 5
Explanation:
In number 1 there are unequal Cu's
In number 3 there are unequal Cl's
Answer:
B,D,E
Explanation:
How is a sand bar formed?
Answer:
Matter is classified into two broad categories, namely, pure substances and mixtures. Mixtures can be separated into pure substances by physical methods. Pure substances are further divided into categories as elements and compounds. ... A pure substance can be either an element or a compound.
Explanation:
A type of emergency apparatus that can be used where oxygen may be limited or where the air might be poisoned is based on the following reaction in which CO2 produced by your own respiration reacts and O2 gas is produced. Calculate the mass of KO2 needed to produce 25 g of oxygen gas.
4 KO2(s) + 2 CO2(g) 2 K2CO3(s) + 3 O2 (g)
Answer:
so I don't know how to answer that
If the number of equally likely sample outcomes of a single ASAP! stage of an experiment is 4, what is the total number of elements in the sample
space if the experiment has 3 stages?
OA. 16
OB. 12
OC. 64
OD. 81
Answer:
C. 64
Explanation:
Given:
The number of equally likely sample outcomes of a single stage = 4
Unknown:
Total number of elements if there are three stages= ?
Solution;
Probability is the likelihood of an event to occur.
In this problem;
For a single stage, the likely outcome is 4
So therefore;
For the 3 stages 4 x 4 x 4 = 64
Therefore, the total number of elements in the sample space of an experiment with 3 stages is 64
Modeling Nuclear changes
Answer:
can someone please do this and put the answers below !!!!
Explanation:
Enter the cycle number, n, in the x column and the number of radioactive atoms in the y column. When you finish, resize the window.
Answer:
at first click done,
A: exponential
then, i just put 0.5, and somewhat close.
Explanation:
edge 2021!!!
what is an isotope
Balance the equation Al 2 O 3 + Cl 2 + C ----> AlCl 3 + CO
Answer:
Al2O3 + 3Cl2 + 3 C → 2 AlCl3 + 3 CO
Explanation:
3. Which of the following is the correct notation for an isotope with 3 protons and 5 neutrons?
A. 5/3Li
B. 3/5B
C. 8/3 Li
D. 8/5 B
Answer:
option c
Explanation:
neutros equal to mass num - atomic num
An atom can be defined by its properties:
Atomic number (Z): It is equal to the number of protons present in a neutral atom.Mass number (A): It is equal to the sum of the number of protons and the number of neutrons.An isotope is represented by the general notation of [tex]_Z^A\textrm{Y}[/tex], where X is the symbol of an element.
Mass number = Numer of protons + Number of neutrons
Put the value in the above formula.
[tex]\Rightarrow \text{Mass number}=3+5[/tex]
[tex]\Rightarrow \text{Mass number}=8[/tex]
The isotopic representation of the chemical specie is [tex]_3^8\textrm{Li}[/tex]. So, the correct option is C.
Learn more about isotopic representation: https://brainly.com/question/18210355
CALCULATE SCIENTIFIC NOTATION (Add and Subtract)
1) 9 × 103 + 2.3 × 104
2) 15 × 102 + 5.2 × 105
3) 10 × 104 + 2.8 × 106
4) 7.0 × 103 + 8.6 × 104
5) 3.0 × 104 + 14.5 × 105
6) 8 x 104 – 2.7 x 102
7) 5.0 x 103 – 8.9 x 104
8) 7.0 x 103 – 8.20 x 102
Answer:
1. 1166.2
2. 2076
3. 1336. 8
4. 733.04
5. 1834.5
6. 556.6
7. - 410.6
8. 836.4
Explanation:
1.9 x 103 =928
The volume of a sphere is given by the equation =4/33, where is the radius. Calculate the volume of a sphere with a radius of 345 pm in cubic meters.
Answer:
its 45 because of 49 og the
What type of energy transfer is taking place when someone plays a violin?
A. Potential energy to kinetic energy
B. Elastic energy to electromagnetic energy
C. Kinetic energy to sound energy
D. Sound energy to heat energy
Answer:
C.
Explanation:
The movement of the bow is Kinetic Energy.
Answer: C. Kinetic energy to sound energy
Explanation: The vibration of the string is kinetic energy that transforms into sound energy.
Which is the correct order of scientists?
Group of answer choices
Bohr, Dalton, Rutherford, Thomson
Rutherford, Thomson, Dalton, Bohr
Dalton, Thomson, Rutherford, Bohr
Thomson, Dalton, Rutherford, Bohr
