The 3 in the chemical formula determine -
3C6H12O6
ANSWER ASAP
Which reacts with carbonates?
A. Bases only
B. Acids and bases
C. Neutral solutions
D. Acids only
Answer:
D. Acids only
Explanation:
what is the chemical formula of tetranitrogen tetrabromide?
motion is a change in an object
Answer:
motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.
Explanation:
Answer:
why is this in chemistry? this is physics.
Explanation:
Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.
Hurry up as fast as possible Ill mark you brainlist
It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms.
These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe. Present observations suggest that the first stars formed from clouds of gas around 150–200 million years after the Big Bang. Heavier atoms such as carbon, oxygen and iron, have since been continuously produced in the hearts of stars and catapulted throughout the universe in spectacular stellar explosions called supernovae.
What is the mass of 5.4 x 10^24 molecules of HCl?
Answer:
I KNOW
Explanation:
Many plants in rainforests have leaf tips that come to a point, so precipitation drains off the leaf. This helps to keep the plant safe from harmful germs. Based on this info, what resource is prevalent in a rainforest?
Answer:
rainfall/water
Explanation:
The possession of drip tips by the leaves of plants in the rainforest is a form of adaptation against high rainfall. Without the drip tips on leaves, water will persist on the surface of leaves, and in conjunction with the warm climate, promotes the growth of pathogens such as fungi and bacteria.
Hence, the possession of drip tips on leaves is an indication of the prevalence of water in the rainforest region.
Intermolecular forces do not have any effect on determining the physical properties of
substances such as surface tension and melting point.
True or false
Answer:
False
Explanation:
The physical properties of melting point, boiling point, vapor pressure, evaporation, viscosity, surface tension, and solubility are related to the strength of attractive forces between molecules. These attractive forces are called Intermolecular Forces.
During a lab you measure the height of your graduated cylinder as 5.75 inches. You later read that you were asked to record it in meters. Convert your measurement into meters in order to get full credit on your lab. Express your answer in scientific notation.
Answer:
1.4605 x [tex]10^{-1}[/tex] meter.
Explanation:
According to the standard method of conversion of units:
1 inch = 0.0254 meter
Therefore, 5.75 inches would be:
5.75 x 0.0254
= 0.14605 meter
0.14605 meter in scientific notation would be 1.4605 x [tex]10^{-1}[/tex] meter.
Hence, the 5.75 inches height would be 1.4605 x [tex]10^{-1}[/tex] meter.
What are the three conditions that can cause a chemicl reactions, give examples?
Help me plz
In which of these diatomic molecules would you NOT find an octet of electrons
around each atom? *
Nitrogen, N2
Hydrogen H2
Oxygen, 02
Fluorine, F2
Answer:
The hydrogen molecule is the only one in which can not find an octet of electrons around each atom.
Explanation:
Let's evaluate each case.
1. Nitrogen (N₂):
With Z = 7, nitrogen has the following electronic configuration
1s²
2s² 2p³ → valence electrons
Since its valence electrons are 5, in the molecule one nitrogen atom shares 3 electrons with the other one, and each remains with an electron pair, so each atom has an octet of electrons.
2. Hydrogen (H₂):
With Z = 1, its electronic configuration is:
1s¹ → valence electron
In the molecule, the hydrogen atoms share the only electron they have, so they will have only 2 electrons around. In this diatomic molecule, we can not find an octet.
3. Oxygen (O₂):
Z = 8. Electronic configuration:
1s²
2s² 2p⁴ → valence electrons
In the diatomic molecule, each oxygen atom shares 2 electrons with the other one and remains with 2 pairs of electrons, therefore, each oxygen atom has an octet.
4. Fluorine (F₂)
Z = 9. Electronic configuration:
1s²
2s² 2p⁵ → valence electrons
In this molecule, each fluorine atom shares 1 electron with the other and remains with 3 pairs of electrons, hence, each fluorine atom has an octet of electrons around.
Finally, we can say that the hydrogen molecule is the only one in which can not find an octet of electrons around each atom.
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At which pesan pressure lowest The image shows a representation of mountains of various heights, numbered 1, 2, and 3 The plami tabeled number 4 OOOO
1 is the lowest pressure.........
HELP!! ASAP!! WILL MARK BRAINLIEST!!!
What are the only elements that make up organic compounds?
Question 2 options:
A)
Carbon, hydrogen, oxygen, and nitrogen
B)
Germanium, hydrogen, potassium, and nitrogen
C)
Carbon, hydrogen, lithium, and silicon
D)
Silicon, hydrogen, carbon, and nitrogen
The only elements that make up organic compounds are in option A. Carbon, hydrogen, oxygen, and nitrogen.
Organic compounds are compounds that primarily consist of carbon and hydrogen atoms. However, organic compounds can also contain other elements such as oxygen and nitrogen, which are commonly found in biological molecules. Carbon forms the backbone of organic compounds, providing the structural framework, while hydrogen is frequently bonded to carbon. Oxygen and nitrogen are also essential elements in organic compounds, participating in various functional groups and forming bonds with carbon and hydrogen.
Therefore, option A (Carbon, hydrogen, oxygen, and nitrogen) is the correct choice as it includes the elements that are predominantly found in organic compounds.
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Which of these is a characteristic of warm air? (5 points)
a It transfers energy through radiation.
b Its molecules are far apart.
c It sinks due to convection.
d It cools the land below i
Answer:
B.
Explanation:
The air molecules of warm air has higher energy. It causes them to move away from each other
What particle determines the name/identity of the element?
Answer:
Number of protons
Explanation:
The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge.
40 points!
Describe One Front It Forms with Another Air Mass
Continental Polar:
Continental Tropical:
Maritime Polar:
Maritime Tropical:
Answer:
cold front, cold front, warm front, cold front, warm front, also low, low, high, low, high air presure
Explanation:
8.
A student measured the mass of a rubber stopper to be 6.00 grams. When it was placed into a
graduated cylinder that initially had 2.0 mL of water, the water went up to the 5.0 mL of water. What is
the density of the rubber stopper?
a) 3.0 g/mL b) 1.2 g/mL
d) 0.60 g/mL
e) none of these
$) 2.0 g/mL
Answer:
A
Explanation:
Because you subtract the amount it was after it want up by the initial amount
Dissolved: Will give brainliest
Answer:
im 99% sure it's 175.
Explanation:
keep trucking, i know school is hard but you're doing amazing
please Help and Thanks!
2. How many moles are in 34.0g of Silver hydroxide?
Answer:
0.272 mol AgOH
Explanation:
Figure out the amount of AgOH in mass, and to find the amount of moles–you just divide the given amount (34g) by the molar mass of AgOH (125g) to figure out the amount of moles. 34/125 = 0.272 mol AgOH.
As we approach fall, the trees begin to drop their leaves. If a leaf, with a mass of 0.00006 kg, drops 3.66 meters from the top of a tree and the acceleration due to gravity is 9.81 m/s2. Calculate the force at which the leaf will hit the ground.
(F = m * a)
Can u guys help on 22. It will only take a min.
Answer:
Alpha > beta>gamma
Explanation:
Comparing only the three common types of ionizing radiation, alpha particles have the greatest mass. Alpha particles have approximately four times the mass of a proton or neutron and approximately 8,000 times the mass of a beta particle.
Gamma radiation, unlike alpha or beta, does not consist of any particles, instead consisting of a photon of energy being emitted from an unstable nucleus. Having no mass or charge, gamma radiation can travel much farther through air than alpha or beta, losing (on average) half its energy for every 500 feet.
Answer:
[tex]\boxed {\boxed {\sf Gamma, beta, alpha}}[/tex]
Explanation:
Alpha. beta, and gamma particles are all emitted from an unstable or radioactive nucleus during radioactive decay.
Alpha particles are essentially helium ions, made of 2 protons and 2 neutrons. It has an atomic mass of 4 atomic mass units.Beta particles are also known as electrons. They have masses of 1/1840 atomic mass units.Gamma particles are actually just rays or photons of electronegative energy emitted. They have no mass or a mass of 0 atomic mass units.So, if we place the mass in increasing order (least to greatest), then it is gamma (0 amu), beta (1/1840 amu) and alpha (4 amu).
Need help. Is this correct
Answer:
Yes, that is correct!
Explanation:
Answer:
Yes
Explanation:
A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.
How do you know if a compound is covalent
Answer:
Compounds containing two elements (binary compounds) can either have ionic or covalent bonding. If a compound is made from a metal and a non-metal, its bonding will be ionic. If a compound is made from two non-metals, its bonding will be covalent.
A golfer hits a ball (m = 50. G) causing it to the leave its fairway lie with a velocity of 32 m/s. Determine the change in momentum of the ball. If the ball strikes the club face for only .05 s, what force is applied by the club to the ball?
Answer:
gravity I not that sure with the answer
Which of the following shows the correct order of the levels of classification form Largest to smallest
07-PS1-6 In a laboratory experiment that measures heat energy changes in 1 point
a chemical reaction, what is the most essential piece of equipment?*
Triple Beam Balance
Calculator
Hot Plate
Thermometer
Need answer now!
True or False, acids contain a "H group" and bases contain an "OH group"
Answer:
Cant help srry
Explanation:
A whale is swimming in the ocean. It communicates with another whale by sending out a sound. Which of the following best
describes how the sound gets to the other whale?
A.
All of the sound absorbed by water changes to heat before getting to the other whale.
В.
The sound is transmitted through water until it reaches the other whale.
C.
All of the sound is diffused in
the water until only a faint sound reaches the other whale.
.D
The sound is reflected in the water before it gets to the other whale.
Answer:
A.
The sound is transmitted through water until it reaches the other whale.
Explanation:
When one whale makes a sound, the sound is transmitted through water until it reaches the other whale. The sound causes a ripple-like effect in the water, producing waves that travel in the water. The waves are heard in all directions. This is why humans can hear the sounds animals make underwater.
The statement which best describes how the sound gets to the other whale is that all of the sounds absorbed by water change to heat before getting to the other whale. Thus, the correct option for this question is A.
How sound may transmit from one place to another?The transmission of sounds is generally carried out through a medium in the form of waves. These sound waves involve the pattern of disturbance caused by the movement of energy.
In an aquatic environment, when one whale successfully constructs a sound, the sound is effectively transmitted through the medium that is known as water.
It remains in the form of waves until it reaches the other whale. The sound in a waveform provokes a ripple-like effect in the water and travels in the water. The waves are effectively heard in all directions.
Therefore, the correct option for this question is A.
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The maximum allowable concentration of Pb2+ ions in water in a local community is 1.51 x 10-8 M. Could a chemist use 2.00 mL of 0.12 M KBr solution on a 5.00 mL sample of tap water to prove through a precipitation reaction that the water supply is safe? Show all work and reasoning
Answer:
The water supply is not safe.
Explanation:
Ionically, the reaction is;
Pb^2+(aq) + 2Br^-(aq) -------> PbBr2(s)
Amount of Br^- reacted = 2/1000 * 0.12 = 2.4 * 10^-4 moles
From the reaction equation;
1 mole of Pb^2+ requires 2 moles of Br^- for complete precipitation
x moles of Pb^2+ requires 2.4 * 10^-4 moles of Br^-
x = 1 * 2.4 * 10^-4 /2
x = 1.2 * 10^-4 moles of Pb^2+
Concentration of Pb^2+ precipitated from 5ml of tap water = 1.2 * 10^-4 * 1000/5
Concentration = 2.4 * 10^-2 M
The amount of Pb^2+ found in the water is greater than the maximum allowable concentration of Pb2+ ions in water in a local community which is 1.51 x 10-8 M. Therefore, the water supply is not safe.