Answer:
What do you want answered?
Explanation:
When naming an acid, which of the following is true?
chlorite changes to chloric acid
chlorate changes to chloric acid
none of these is true
chlorate changes to chlorous acid
Answer:
chlorate changes to chlorous acid
A 500-gram block of solid cheese is melted in a pot. Which is most likely be the mass of the cheese after it is melted?
pleaseeeeeeeeee answer
Answer:
due to the law of conservation of mass, the mass would stay the same.
PLZ HELP PPPLLLLLZZZZ HELP ITS OVER DUE PPPPPPPPPPPLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZ
Answer:
you didnt put a question lol
Explanation:
Answer:
help with what?
EXPLANATION:
How do the valency and the atomic size of the element vary while going from left to right along a period in The modern periodic table?
Answer:
Atomic size decreases on going along a period from left to right because the electron enters into the same shell, therefore, attraction between nucleus and outermost electron increases and thus atomic size decreases. Valency first increases from 1 to 4 and then decreases from 4 to GO along a period from left to right.
Answer:
kha gya vo chasmis ........
how do I complete this column graph of the number of conductors vs the number of insulators
the Conductors are:
carbon,iron nail, aluminium foil, copper wire
the Insulators are:
Paddle pop stick
plastic spoon
and please explain how to do it
it's due this Friday the 26th
it is a Science
Answer:
sorry but i am doing this for point
Explanation:
how do I complete this column graph of the number of conduct vs the number of
Which one of the four levels of organization include the other three levels
A. Community
B. Ecosystem
C. Organism
D. Population
Answer:
Ecosystem
Explanation:
The levels of organization from lowest complexity to highest are:
species, population, community, ecosystem
1 mole of any gas is equivalent to?
Answer:
22.4 L at standard temperature and pressure.
before you retire in the evening, you sit down for a snack of milk and cookies. when you waken in the morning, you discover a carton of sour milk on the counter. knowing that milk sours if left in the refrigerator too long, has the reaction rate increased or decreased for the carton of milk on the counter? what has happened to its reaction time
Answer:
Increased
Explanation:
We know that the higher the temperature the higher the rate of reaction. This implies that as the temperature is increased, a reaction tends to proceed faster.
This follows from the collision theory, the higher the temperature, the higher the energy of the reacting particles hence they collide with each other faster and more effectively.
Thus the rate of reaction( or reaction time) for the carton of milk on the counter was increased.
Which series reveals the source of energy for coal? i will mark brainlest!!!!!!!!!!!!!!!!!!!!!!!! giving 20 points
coal chemicals sun
coal plants chemicals
coal animals sun
coal plants sun
Answer:
coal chemicals sun
Explanation:
How is Melting and Cooling of Rock like a Chocolate Bar?
Answer:
Melting and cooling of a rock is like a chocolate bar because, when chocolate melts, it happens with heat just like melting of a rock. When chocolate cools, it just becomes a solid with no heat just like rocks when becoming an igneous rock.
Explanation:
You can kinda re-phrase it if u want cause yea. hhah.
Please help will mark brainliest!! What is the main point of paragraph 3?
Answer:
the highest frequency
Explanation:
Ba(NO3)2 + 2LiOH → Ba(OH)2 + 2LiNO3
How many nitrate ions are in the products and the reactants of the chemical equation?
A.
one in the reactants and two in the products
B.
three in the reactants and three in the products
C.
two in the reactants and two in the products
D.
six in the reactants and three in the products
Answer:
C.
two in the reactants and two in the products
Explanation:
The law of conservation of mass helps us balance chemical equations so that there are the same number and type of atoms in the reactants and products.
There are two nitrate ions in Ba(NO3)2 and two in 2LiNO3.
Antacid has a pH of 11. What does that tell you about its concentration of hydrogen ions? What does that tell you about its concentration of hydroxide ions?
Answer: The concentration of hydrogen ions is [tex]10^{-11}M[/tex] and the concentration of hydroxide ions is [tex]10^{-3}M[/tex]. Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
[tex]pH=-\log [H^+][/tex]
[tex]pOH=-\log[OH^-][/tex]
Putting in the values:
[tex]11=-\log[H^+][/tex]
[tex][H^+]=10^{-11}M[/tex]
[tex]pH+pOH=14[/tex]
[tex]pOH=14-11=3[/tex]
[tex]3=-log[OH^-][/tex]
[tex][OH^-]=10^{-3}M[/tex]
Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.
The data shows the number of humans and western pond turtles in a particular county.
800
700
600
500
400
300
200
100
1987
1990
07
1960 1970
1980
number of western pond turtles
human population (in thousands)
What can be inferred about the turtle population?
The turtle population decreases as a result of less livable space.
O The turtle population moves to a new county due to a fear of humans.
The turtle population decreases as a result of natural disasters.
The turtle population moves to a new county due to a change in the climate.
In ADEF, the measure of F=90°, the measure of ZD=10, and EF = 94 feet. Find the
length of DE to the nearest tenth of a foot.
Answer:
answer. the measure. is f=90 the equbaliint is 180
Explanation:
yan ang sagot ko
A 6.0-V battery does 1200 J of work transferring charge. How much charge is transferred?
answer is below!! hope this helped
A 6.0-V battery does 1200 J of work transferring charge, then 100C charge is transferred.
What is battery ?One or more electrochemical cells with external connections for powering electrical equipment make up an electric battery, which is a source of electric power.
A battery's positive terminal serves as the cathode and its negative terminal serves as the anode when it is delivering electricity.
Electricity is accepted, stored, and released on demand by batteries and similar devices. Like many other common energy sources, batteries store energy through chemistry in the form of chemical potential.
For instance, until they are burned, logs store energy in their chemical bonds for later conversion to heat.
V = 12 V
W = 1200 J
q = ?
V = W / q
12 = 1200 / q
q = 100 C
Thus, A 6.0-V battery does 1200 J of work transferring charge, then 100C charge is transferred.
To learn more about battery follow the link;
https://brainly.com/question/19225854
#SPJ2
Explain the differences between bronze and brass, and steel and cast iron. Which is best used for cooking wares?
Answer:
Steel and cast iron
Explanation:
They are all metal but assuming that you are finding the best material for your pan i suggest going for steel or cast iron
Why is there a hole in the ozone layer? What do you think the consequences of that hole are?
Answer:
There is a ozone layer because of the special atomphere and chemical conditions that takes place there. I think the consequences of that home area is the very low winter temperatures.
Answer:
There is a hole in the ozone layer because of the pollution on earth. Because of that the UV rays are easily entering the earth through that portion. The consequences of this can be cancers, global warming and disastrous storms.
plz mark as brainliest
Which element would be the most suitable to make a spoon that will melt in
your hot drinks?
A) aluminium
melting point: 660°C
boiling point: 2470°C
B) argon
melting point: -189°C
boiling point:-186°C
C) bromine
melting point: -7°C
boiling point: 59°C
D) gallium
melting point: 30°C
boiling point: 2400°C
E) lithium
melting point: 180°C
boiling point: 1330°C
F)mercury
melting point: -39°C
boiling point:357°C
Answer:
it's A) or E)
others are not suitable cuz their melting point is weak.
Answer:
Gallium
Explanation:
Because the melting point is low and the drinks are usually around 60-70 degrees Celsius so it wil melt
what is a molecule??
Answer:
molecule is a group of atoms bonded together representing the smallest fundamental unit of a chemical reaction
How many moles are there in 2 grams of Aluminum?
Answer:
Number of moles: 0.07407407407
Which of the following is equal to one molecule of calcium atoms?
6.022x10^23 molecules of Ca
6.022x10^23 atoms of Ca
6.022x10^20 molecules of Ca
6.022x10^22 atoms of Ca
Answer:
https://download.cnet.com/1-Click-Answers/3000-2378_4-10060189.html
Explanation:
Answer:
6.022x10^23 atoms of Ca
Explanation:
I am so lost. Does anyone know how to do this??? Enthalpies of reaction stuff
C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?
The combustion of C2H4(g) is represented by the equation above.
(a) Use the enthalpies of formation in the table below to calculate the value of ΔH∘1 for the reaction.
ΔH∘f(kJ/mol)
C2H4(g) 52
CO2(g) −394
H2O(l) −286
O2(g) 0
Please help!!! :(
Answer:
-1464 kJ/mol
Explanation:
The balanced equation for the reaction is given as;
C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?
The enthalpy of the reaction is given by the equation;
Enthalpy of reaction = Enthalpy of products - Enthalpy of reactants
Products:
2CO2(g)+2H2O(l)
Enthalpy of Products = 2 (−394) + 2(−286)
Enthalpy of Products = -1360 kJ/mol
Reactants:
C2H4(g)+3O2(g)
Enthalpy of Reactants = 2 (52) + 3(0)
Enthalpy of Reactants = 104 kJ/mol
Enthalpy of Reaction = -1360 - 104 = -1464 kJ/mol
Natasha is learning about density in science class. She has been given three different geometric shapes made from different substances and asked to determine which has the greatest density. She measures the masses of the objects and records her results in the table below
What should Natasha do next to determine the relative densities of the objec
A. She should measure the temperature of each object.
B. She should measure the volume of each object.
C. She should measure the surface area of each object.
D. She should measure the circumference of each object.
When does the energy in the H atom get closer
Answer:
3.48 g
Explanation:
Because its useful.
helpppppppppppppp!!!!!!!!!!!!!how did chlorine atom attain saturation in potassium chloride and oxygen dichloride
differentiate between hypothesis and Theory
Answer:
A
Explanation:
edge
Shauna is looking over her family history for heart disease and thought about the easiest way to represent what she discovered. What model is used to show the pattern of traits that are passed from one generation to the next in a family?
dichotomous key
pedigree chart
line graph
punnett square
Plz answer question! Due in 7 minutes!!! Will make BRAINLIEST for first correct answer!!!
Which feature separates watershed
Answer:
Ridges.
Explanation:
Watersheds are separated from one another by ridges. Ridges are elevated boundaries that divide watersheds.