Answer:
Aristotle is considered by many to be the first scientist, although the term postdates him by more than two millennia. In Greece in the fourth century BC, he pioneered the techniques of logic, observation, inquiry and demonstration.
Explanation:
hope this help:))
5. Write a short explanation for why simple molecular substances have no electrical
conductivity. Include the words: electrons and ions
How does chemistry help the environment?
Answer:
Chemistry can help us to understand, monitor, protect and improve the environment around us.
Explanation:
I hope this helps u! :D
The reaction heated up 100 g of water in the beaker from 25 °C to 50.0 °C. The specific heat capacity of water is 4.184 J/g°C. Calculate the amount of heat energy that was released by the reaction.
Answer:
The amount of heat energy that was released by the reaction is 10,460 J.
Explanation:
Sensible heat is that which a body or an object receives or releases and causes its temperature to increase or decrease without affecting its molecular structure and therefore its state.
In other words, sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state (phase change). When a body is supplied or absorbed sensible heat, the temperature varies.
The equation that allows calculating heat exchanges is:
Q = c * m * ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
In this case:
c= 4.184 [tex]\frac{J}{g*C}[/tex]m= 100 gΔT= Tfinal - Tinitial= 50 C - 25 C= 25 CReplacing:
Q= 4.184 [tex]\frac{J}{g*C}[/tex] *100 g* 25 C
Solving:
Q=10,460 J
The amount of heat energy that was released by the reaction is 10,460 J.
how many kilocalories of heat are involved in changing the temperature of each of the following: a) 25.0 g ice from -4.00 °c to 0 °c
What number should replace the question mark to show the number of C6H1206 (glucose) molecules in a balanced
chemical equation?
Lead (II) Acetate + Potassium Chromate
Answer:
SOMEONE HURRY AND ANSWER THIS
Explanation:
Step 5: Measure Pressure and Volume with the Weight
of the Book
Total the mass on the syringe. Record it in the
correct row of the data table.
Click and drag the book to increase pressure.
Click the syringe to zoom in and see the volume.
Answer:
0.498
Explanation:
because that is the right answer
Answer:
the answer is
498 g
.498 kg
Explanation:
3. Find the molar mass of the following compounds:
a. Ammonia NH3
b. Iron (II) Nitrate Fe(NO3)2
Answer: a.4
Explanation:
n=1
h=3
What did scientists believe about caloric? State two examples of the scientific phenomena that the caloric theory explained
Answer:
that it was difficult, bc they didnt accept the particle model of matter, air molecule get warmer and explains charles law (i think)
why does the second row of the periodic table have 8 elements
short asnwer:
here are 8 elements in period 2 because all those elements have electrons in the second shell and no electrons in the third shell.
Explanation:
There are certain rules for arranging atoms in shells 1) Maximum number of electrons in a shell is given by the formula 2n^2. 2) The outermost ( valence) shell can accomodate only 8 electrons.
Answer: the nubers ad up
Explanation:
you count like 12345678
Write the skeletal formula equation for: solid potassium, K, reacts with
chlorine gas, Cl2, to produce solid potassium chloride, KCI.
An aluminum (Al) boat anchor has a mass of 6800 grams. How many
moles of aluminum are in the boat anchor?
FeCo2+NaCo3+Hg+Co2No3
Explanation:
the answer is sodium carbonate
Most of earths fresh water is in glaciers
True or false
PEASE HELPP
Answer:
True
Explanation:
Choose the words or phrases that correctly complete the paragraph.
Mia decided to research the hydrosphere for a class project. She is focusing on the ways the ocean varies in salinity, temperature, and depth. As you descend into the ocean, the water temperature
Choose-increases, heats,lose force,decreases(for both)
, while the water pressure
Choose...
.
Answer:
As you descend in the ocean water temperature and pressure decrease.
Explanation:
"Cold water has a higher density than warm water. Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface. The sinking and transport of cold, salty water at depth combined with the wind-driven flow of warm water at the surface creates a complex pattern of ocean circulation called the 'global conveyor belt.'" - National Ocean Services
All of the following are forms of water in the atmosphere EXCEPT _________.
Group of answer choices
A. ozone
B. precipitation
C. ice
D. vapor
Answer:
OZONE
Explanation:
HOPE IT HELP
MARK ME AS BRAINLIEST
What is the pressure exerted by 32g of o2 in a 22.0L container at 30.0 degrees Celsius
Answer:
114 kPa
Explanation:
What reaction is zinc(s) + water(l) →
Answer:
Zn+H2O ------ ZnO + H2 is the correct answer
Besides radium, what other world-altering discoveries can you think of that both
led to advancement, and also tragedy?*
Answer:
I'm not really sure but might be D
One other world-altering discovery that led to both advancement and tragedy is the discovery of nuclear power. Nuclear power has been harnessed for its ability to generate large amounts of energy.
Nuclear science has had significant advancements in various sectors, such as electricity production, medicine, and space exploration. However, the same discovery also led to tragic incidents like the bombings of Hiroshima and Nagasaki during World War II.
These tragic events highlighted the destructive power of nuclear energy and raised concerns about its safety and potential for misuse. Despite the tragic consequences, nuclear power continues to be an important source of energy, but the focus has shifted towards developing safer and more sustainable nuclear technologies.
Learn more about nuclear science,here:
https://brainly.com/question/6593254
#SPJ4
What scientist use the scientific method to determine if cold was a substance?
Answer:
diamns
Explanation:
An aluminum ion has 13 protons, 14 neutrons, and 10 electrons. What is the charge of the aluminum ion?
Answer:
the charge of the aluminum ion is +3
Describe Connections in a Text
Describe the connection between coal power and nuclear power from Turn on the Power. Use the
ideas from the Compare Ideas in a Text activity to describe how the ideas are alike and different.
Coal power and nuclear power are
alike because they both...
Coal power and nuclear power are
different because coal power...
and nuclear power...
Answer:
thanks
Explanation:
PLS HELPP
1. Take two water molecules and bring them close together. The hydrogen of one water molecule is attracted to what part of the other water molecule?
_____________________________________________________________
2. This attraction between parts of two different polar molecules is called __________ bonding.
_________________________________________________________________
3. Which type of bond holds the oxygen and hydrogen atoms together within a water molecule?
____________________________________________
4. Pull the hydrogen off of the oxygen in a single water molecule. Which bond is stronger, a hydrogen bond or a covalent bond?
_____________________________________________
Answer:
The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
Explanation:
:)
Imagine that you have 100g of water.
You start dissolving KNO3 in the water and you find that after you've dissolved about 55 g of KNO3, you can't dissolve any more; it just sinks to the bottom.
Approximately what is the temperature of the water?
Round your answer to the nearest whole number and submit the number only; no units.
Answer:
Explanation:
So, just find 55 on the solubility side and with your finger just move to the right untill you touch the line you should get in between 46-48. I would go more for 48.
Hope you have a wonderful day!
what word means to bend light rays toward each other
What is the pH for a solution that has an OH ion
concentration of 1.0 x 10^4 M?
Select one:
7
4
10
5
help me on question
pleaseeeeeee
2
DI
-
U
3
ili
=
3
5
5
6
Explain how you think the availability of water affects human population size in a region.
Describe data from Task 1 that allows you to conclude this cause-and-effect
relationship between water availability and population.
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
You are growing a garden and notice that the soil is always wet. What type of soil do you have?
Sand
Silt
Clay
Loam
Answer:
Clay
Explanation:
clay does not allow water to flow
In this experiment, you made observations of the ______
and the ____
You used these observations to write the ____
In this experiment, you made observations of the reactant and the product.
You used these observations to write the balanced chemical equation.
What is chemical equation?The symbolic representation of chemical reaction is called chemical equation.The chemical equation should be balanced.
To learn more about chemical equation here.
https://brainly.com/question/12047033
#SPJ3
Answer:
{first part} reactants, products, balanced chemical equation, classify the reaction
{second part} color change, formation of a gas, formation of a solid
Explanation:
edg 23'