Answer:
2200d cc
Explanation:
Placing sodium metal into water creates a bright light and a lot of heat – an explosion. Sodium metal disappears during this explosion. Is this a chemical change?
Answer:
Yes because it is something that cannot be turned back
How do you determine the difference between an element and a compound?
Answer: An element is a single atom.
Explanation:
An element cannot be divided into smaller parts (that was true before the physicists built atomic weapons and the Large Hadron Collider). But the definition of an atom was establish before Einstein, Oppenheimer, and Rutherford. An element is an atom. A compound is two or more atoms bonded together. Carbon is an element, and one carbon all by itself is an atom. A carbon that has some hydrogens attached (e.g, methane, CH4) are compounds. An oxygen atom is just sa single O. We write O2 since that is the form it takes in nature. O is an atom, O2 is a molecule.
3. What are the values of the graduations (urmarked linas) in each of the
following graduated cylinders?
Answer:pp
Explanation:
An electrical engineer measures the frequency of a satellite radio transmission. The frequency is 584 GHz. What is the frequency in hertz? Write your answer in
scientific notation.
CAN SOMEONE HELP ME PLS!!!
Answer:
584 GHz = 584000000000 Hz
= 584×10^11 Hz
Explanation:
1 Gigahertz ( GHz) = 1000000000 Hz
Satellite uses frequencies and wavelengths to transfer the specific spectrum. The 584 GHz frequency of satellite radio transmission in hertz is 5.84 × 10¹¹ Hz.
What is the frequency?Frequency, wavelength, and wave number are the functions of the electromagnetic spectrum that are widely used to transfer the various waves for different purposes. Frequency is inversely proportional to wavelength.
The number a wavelength completes in a time period of seconds gives the frequency and is said to be calculated in Hertz (Hz). It is inversely proportional to the time period.
Given,
Frequency = 584 GHz
It is known that 1 Giga hertz = 1000000000 Hz
So, 584 GHz = 584 × 10⁹ Hz
Or 5.84 × 10¹¹ Hz.
Therefore, the frequency of satellite radio transmission in hertz is 5.84 × 10¹¹ Hz.
Learn more about frequency, here:
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pha 1000ml dung dịch natri hydroxyd xấp xỉ 0.1N. Xác định độ chuẩn bằng 10ml đ acid hydroclorid 0.1N có K=0.950 hết 11ml dung dịch natri hydroxyd vừa pha
a)tính hệ số hiệu chỉnh K của dung dịch natri hydroxyd
b)tính toán để điều chỉnh nồng độ 990ml dung dịch natri hydroxyd
Answer:
please translate to English so I can help
Explanation:
the reason is bc I cant read this so jus comment in English and I'll reply the answer
2. What is frequency?
Fre
Answer:
Frequency is the rate at which something occurs or is repeated over a particular period of time
Explanation:
The frequency is like wave patterns including sound, electromagnetic waves, electrical signals, or other waves, this expresses the number of cycles of the repetitive waveform per second.
Answer:
It is the number of occurrences of a repeating event over time. Unit is hertz (Hz)
Explanation:
[tex]f = \frac{1}{t} [/tex]
The main difference in the structures of each state of matter is what?
A.
The volume of the particles
B.
The density of the particles
C.
The kinetic energy of the particles
D.
The potential energy of the particles
Answer:
kinetic energy of the particles
Explanation:
temperature is the measure of the average kinetic energy of the particles
Could someone help me please?
Answer:
I think its A And C OR D HOPE ITS RIGHT
Explanation: BY THE LOVE YOUR AVTAR
True statements are:
Density increases if the volume of an object decreases and the mass remains the same.
Density increases if the mass of an object increases and the volume remains the same.
Density remains the the same if the mass and volume of an object increases proportional.
Further:
Density = Mass/Volume
Why is it important to do further investigations to determine if a chemical change really occurred?
Answer:
x
Explanation:
Can two objects be made of the Same substance if they have the same volume
Answer: no
Explanation: theres a chance but generally no because there can be different substances in different amounts which can have similar volumes
4. Wendy is curious to learn more
about each of her rocks. She takes
a few more measurements and
discovers that each of her rocks has
the same exact density: 3.50
grams/mL.
What type of measurements did
Wendy take and what were they?
Explain your answer in the space
provided on the right.
To obtain the density of her rocks, Wendy had to take measurements of mass and volume of the rocks.
Density is defined as mass per unit volume. Wendy wanted to obtain the density of the rocks hence she had to measure the mass and the volume of the rock.
The mass of the rocks is measured using a weighing balance while the volume of the rocks is obtained by water displacement method.
The density is now obtained as;
Density = Mass/volume for each rock sample.
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how resonance helps a musician produce music on guitar?
Answer:
So the resonance phenomenon is what allows for notes to be produced on a musical instrument at all. A guitar though makes an additional use of resonance. The body of the guitar is carefully designed to resonate when notes are played on the strings. The reason is that the body can then behave as an amplifier for the strings.
Explanation:
reference = socratic . org
Write the IUPAC name of (image attached) (2 COOH)
Answer:
1,2-benzenedicarboxylic acid /phthalic acid
A 5.00 cm^3 sample of gold has a mass of 96.5 g. Calculate the density of gold.
Answer:
[tex]\boxed {\boxed {\sf 19.3 \ g/cm^3}}[/tex]
Explanation:
We are asked to calculate the density of gold. The density of a substance is its mass per unit volume. It is calculated using the following formula.
[tex]\rho= \frac{m}{v}[/tex]
The mass of the sample is 96.5 grams. The volume of the sample is 5.00 cubic centimeters.
m= 96.5 g v= 5.00 cm³Substitute the values into the formula.
[tex]\rho= \frac{ 96.5 \ g}{5.00 \ cm^3}[/tex]
Divide.
[tex]\rho= 19.3 \ g/cm^3[/tex]
The density of gold is 19.3 grams per cubic centimeter.
What happens to the carbon in natural gas when the gas burns in a badly fitted gas fire? Explain your answer
Explanation:
Fuels such as natural gas and petrol contain hydrocarbons. These are compounds of hydrogen and carbon only. When they burn completely: the carbon oxidises to carbon dioxide
When potassium is added to water, what causes the explosion?
Answer:
The highly unstable pure sodium or potassium wants to lose an electron, and this splits the water atom, producing a negatively charged hydroxide ion and hydrogen and forming an explosive gas that ignites.
Explanation:
what kind of graph is shown above ?
Answer:
its bar graph
Explanation:
lithium oxide+sulphuric acid
Answer:
sulfurous acid with lithium hydroxide to form water and lithium sulfite. The balanced reaction equation is b. H2SO3(aq) + 2 LiOH(aq) → 2 H2O(l) + Li2SO3(aq).
li2so4+h20 (hope it helps )
how soap is made? using potash
Explanation:
Potassium Hydroxide is a type of lye specifically used to make liquid soap. It is also known as potash, lye or even KOH. This is the chemical that induces saponification of the fats and oils to create liquid soap.
Explanation:
Potash can actually be used to make liquid soaps, bar soaps and jelly soaps by adding NaOH of course for solid soaps. You can use all types of potassium salts to saponify lipidsHow is the kinetic energy of molecules changing when the molecules move faster?
The kinetic energy ...
a
is not changing
b
depends on the molecules.
С
is decreasing.'
d
is increasing
Answer:
I think it is increasing
describes the process by which gas
molecules aggregate to form liquids.
A. Condensation
B. VAPORIZATION
C. Solidification
D. Sublimation
Answer:
condensation
Explanation:
hope it is helpful
molecular formula of sodium carbonate
Answer:
Na2Co3 is the formula of sodium carbonate
A student measured the maximum mass of salt that can dissolve in 100 mL of water at five different temperatures. Which variable should go on the x-axis? A the mass of salt B the volume of water C the mass of water D the temperature of water (i think this is chemistry but it just says science)
The independent variable is plotted on the x-axis while the dependent variable is plotted on the y-axis.
The correct answer is D; the temperature of water
It is conventional in science experiments to plot the independent variable on the x-axis and the dependent variable on the y-axis.
As the temperature is manipulated, the measured the maximum mass of salt that can dissolve in 100 mL of water changes. This implies that mass of salt that can dissolve is the dependent variable while the temperature of water is the independent variable.
Hence, the temperature of water is plotted on the x-axis(independent variable) while mass of salt that can dissolve is plotted on the y-axis(dependent variable).
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Answer:
the temperature of the water
Explanation:
what happens when an object in space revolves
Answer:
Objects in space follow the laws or rules of physics, just like objects on Earth do. Things in space have inertia. ... The movement of things in space is influenced by gravity. Gravity is an important force that can change the course of bodies in space or pull them off of one course, or even cause them to crash together.
Explanation:
i Hope This Helps :3
Answer: It is Turing on an axis, in a 360* motion. OR, since you didn’t specify, it could be revolving around the sun, meaning it is traveling around the sun once.
A friend says “my dad packed a banana for lunch everyday when i was in grade school i never want to see another banana again” What does this reaction demonstrate?
Answer:
maybe the person got tired of eating banana or she could have tripped on a banana peel and then they hate banana hope this helps or give you an idea
A measure of the average kinetic energy of particles is
length
temperature
mass
volume
Silver is produced as a byproduct of gold
production. Gold and silver are part of
Group 11 on the periodic table. What does
this indicate about silver?
Answer:
Element Properties
atomic number 47
atomic weight 107.868
melting point 960.8 °C (1,861.4 °F)
boiling point 2,212 °C (4,014 °F)
specific gravity 10.5 (20 °C [68 °F])
oxidation states +1, +2, +3
electron configuration [Kr]4d105s1
hope that helps
PLS HELP what is 2x10^3 in long form
Answer:
2x1000 = 2000
Explanation:
10^3 = 10×10×10 = 1000
exponent , the ^3 means multiply the number by itself 3 times, if it was ^4, it would be 4 times and so forth.
another trick for 10s is just put the 1 and the exponents number of 0's after the 1. so in this case, put three 0's: 1,000
Answer: 2000 or 2000.00 in decimal form if you need
Explanation: Real number to turn Scientific to Real Number you must type the exact scientific notation into a scientific calculator including the Times symbol and it should convert it In other words Multiply the decimal number by 10 raised to the power indicated. Ex: 3.456 x 10^4 = 3.456 x 10,000 = 34560
True or false? My volume changed from 20L to 15L so my Temperature increased.
True
False
Answer: the answer is TRUE
why does data need to be analyzed?
A. to find a pattern that will explain your observations
B. to come up with a good hypothesis
C. to ensure that observations were done correctly
D. to test your hypothesis
Answer: All of these options have some value in explaing why data need to be analyzed. The best single option would be, in my opinion, to find a pattern.
Explanation: The answer above does not address other valid reasons. An evaluation will add some confidence limits to your data, and therefore conclusions.
