Answer: Isaac Newton
Isaac Newton, an English scientist, lived from 1642 to 1727. In 1665 he realized that it was gravity that held the solar system together.
Explanation:
BUT YOULL NEVER BE ALONEEEE
ILL BE WITH YOU FROM DUSK UNTIL DAWWWNNNNN
ILL BE WITH YOU FROM DUSK TILL DAWN
ILL HOLD U WHEN THINGS GO WRONG
ILL BE WITH U FROM DUSK TIL DAWN
ILL BE WITH U FROM DUSK TIL DAWNNNNN
How many molecules are there in 45.0 grams of CH4?
Answer:[tex]16.93\times 10^{23}\ \text{molecules}[/tex]
Explanation:
Given
Mass of [tex]CH_4[/tex] [tex]m=45\ gm[/tex]
Molar mass of [tex]CH_4[/tex] is [tex]12+4\times1=16[/tex]
No of moles of [tex]CH_4[/tex] [tex]=\dfrac{\text{Mass}}{\text{Molar mass}}=\frac{45}{16}[/tex]
No of Molecules in 45gm of [tex]CH_4[/tex] is
[tex]\Rightarrow N_A\times\frac{45}{16}=6.022\times 10^{23}\times \frac{45}{16}\\\Rightarrow 16.93\times10^{23}\ \text{molecules}[/tex]
Pls help me i have been seeing people giving out the wrong answers on purpose and I just don't want that so pls
Answer:
B
Explanation:
Answer:
I think the answer is B. I need 20 characters but I can't think of anything else to type.
Write the skeletal formula equation for: solid potassium, K, reacts with
chlorine gas, Cl2, to produce solid potassium chloride, KCI.
Melting and boiling point of water is high?
Answer:
Yes
Explanation:
Why melting and boiling point of water is high?
The reason for the high melting and boiling temperatures is the hydrogen bonding between water molecules that causes them to stick together and to resist being pulled apart which is what happens when ice melts and water boils to become a gas
Answer:
the temperature in the hydrogen bonding between water molecules that causes them to stick together which happens when ice melts and water boil to become a gas
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:
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
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
True or False, according to the Megafauna Extinction Timeline, megafauna and humans arrived 50 thousand years ago?
Answer:
False
Explanation:
Megafauna are large animals that roamed the Earth during the Pleistocene Epoch, 1.6 million - 10,000 years ago.
2
DI
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3
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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.
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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
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Which compounds can be made with the reaction benzene via electrophilic aromatic substitution using isopropyl chloride and AlCl3 as reagents (1 equivalent or excess).
Answer:
isopropyl benzene (cumene)
Explanation:
The reaction of isopropyl chloride and AlCl3 and benzene belongs to the class of organic reactions known as the Friedel Kraft alkylation.
The mechanism of the reaction involves the formation of a tetrahedral complex [AlCl4]^-.
The electrophile now is the isopropyl group which attacks the benzene to yield the product.
2.
What is the percent composition of nickel in NiPO ?
Answer:
18.782% is the correct percent
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
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:
Is a large body of flowing water ;created by many smaller flowing together. Aquifer
Answer:
alll I really know is that it includes smaller pools of water
what are the main components of the circulatory system?
Answer:
The heart
Blood
Blood vessels
Explanation:
hope this helps
pls mark brainlest
Answer:
The heart, blood, and the blood vessels.
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
What scientist use the scientific method to determine if cold was a substance?
Answer:
diamns
Explanation:
5. Write a short explanation for why simple molecular substances have no electrical
conductivity. Include the words: electrons and ions
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:
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
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
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
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
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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'
what word means to bend light rays toward each other
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
Lead (II) Acetate + Potassium Chromate
Answer:
SOMEONE HURRY AND ANSWER THIS
Explanation:
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.