Answer:
I DONT KNOW SORRY
Explanation:
Answer:
Iodine-131 is more likely to undergo beta decay than positron decay.
does liquid water have constant density
Answer:
yes
Explanation:
Unlike a gas, a liquid does not disperse to fill every space of a container, and maintains a fairly constant density. A distinctive property of the liquid state is surface tension, leading to wetting phenomena. Water is, by far, the most common liquid on Earth.
hope this helps
brainliest?!
If you have 4 moles of barium hydroxide, how many moles of oxygen atoms do you
have?
Answer:
8 moles of oxygen.
Explanation:
The chemical formula for barium hydroxide is Ba(OH)₂
This means one mole of barium hydroxide contains one mole of barium, two moles of hydrogen, and two moles of oxygen. If you have four moles of Ba(OH)₂ you will have four times the amount that is found in one mole.
4 moles of Ba(OH)₂ will have 8 moles of oxygen.
The number of moles of oxygen atoms we have in the compound is 8 moles .
The chemical equation for barium hydroxide is as follows:
Ba(OH)₂
According to the compound we have 1 atom of barium, 2 atoms of oxygen and 2 atoms of hydrogen.
Therefore, 4 moles of the compound can be represented as follows;
4 Ba(OH)₂
This means we have 4 atoms of barium, 8 atoms of oxygen and 8 atoms of hydrogen.
Therefore, we have 8 moles of oxygen atoms or 4 moles of oxygen molecules.
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Match each term to its related description
solar wind: gives comets their tail
solar flares: a big explosion on the surface of the sun
sunspots:every 11 years there is a peak in the number of them
Nitric acid is a highly reactive acid with the chemical formula HNO3. It is a clear, colorless and odorless liquid at room temperature that is nonflammable. How many different elements make up one molecule of nitric acid? A. Three B. Four C. Five D. Two
Nitric acid, is a highly corrosive mineral acid. The pure compound is colorless, but older samples tend to acquire a yellow cast due to decomposition into oxides of nitrogen and water.
There are THREE different elements and a total of FIVE atoms in nitric acid.
The formula for nitric acid is HNO3. This means there is one atom of hydrogen, one atom of nitrogen, and three atoms of oxygen in one molecule of nitric acid.
So, Thus, your answer will be FIVE if you're counting the molecules but if you are counting the elements then it is THREE.
-Snooky
How will electron pairs behave towards one another according to VSEPR?
a. They will arrange themselves to be far apart from each other.
b. Electron pairs are not affected by other electron pairs.
c. They will be oriented close to each other.
d. The effect depends on the electronegativity of the atoms involved.
Regarding water molecules, adhesion is best described as * the attraction water molecules have to other water molecules the attraction water molecules have to ionic substances the attraction water molecules have to polar substances the attraction water molecules have to other surfaces
Answer:
the attraction water molecules have to other surfaces
Explanation:
Adhesion is defined as the attractive forces between unlike substances, e.g water moving up a capillary tube.
Adhesion is the tendency of dissimilar particles or surfaces to cling to one another(Wikipedia).
So, what we mean by adhesion in this context, is the attraction water molecules to other surfaces.
total atoms of each element in
5CaCl2+3Ca(ClO4)2+4Ca(OH)2
Answer:
Element Symbol Atomic Mass # of Atoms Mass Percent
Chlorine Cl 35.453 2 29.670%
Calcium Ca 40.078 1 16.770%
Oxygen O 15.9994 8 53.559%
Explanation:
How many grams are in
.093 liters of o2, gas at STP?
Answer:
0.13 grams of O2
Explanation:
Just did worksheet
Sulfur hexafluoride, SF6, is a very stable, nonflammable gas at room temperature. It
is used in many electronic products because it is a good electrical insulator.
Which statement describes the composition of sulfur hexafluoride?
Sulfur hexafluoride (SF6) is a synthetic fluorinated compound with an extremely stable molecular structure.
What is sulfur hexafluoride?The first response option is the right one. A compound is a material made up of many atoms from various elements, such as SF6 (sulfur and fluorine).
The second option is wrong because, although SF6 does include seven atoms, those atoms are not all the same—six of them are fluoride atoms and one is a sulfur atom.
Because SF6 can be chemically divided into simpler chemicals that are elements, the third answer option is untrue. The six S and six F atoms each have their own nucleus, hence SF6 does not have a single nucleus.
Therefore, Sulfur hexafluoride (SF6) is a synthetic fluorinated compound with an extremely stable molecular structure.
To learn more about sulfur hexafluoride, refer to the link:
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Which of the following conditions creates the largest waves?
Question 3 options:
strong winds that blow in short spurts over a small distance
strong winds that blow over a great distance for a long time
strong winds that blow for a long time over small distances
Answer:
strong winds that blow in short spurts over a small distance
Explanation:
Generally, the most common factor that causes the largest waves in the ocean is winds. this is also called wind-driven waves of the ocean when the surface wind flows on the surface of the ocean, this disturbance creates the friction between surface wind and surface of the ocean which creates waves in the ocean
Answer:
B
Explanation:
k-12 test
If you begin with 32.0 grams of oxygen and all of the hydrogen that you need, how many grams of water can you make?
under what conditions will the particles of a substance have the most energy
Answer:
All particles have energy, and the energy varies depending on the temperature the sample of matter is in, which determines if the substance is a solid, liquid, or gas. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy.
How many cm are in 7 km?
Answer:
70000 cm in 7km
Explanation:
There are 1000 m and 100 cm in 1 m in 1 km, so to find how many cm are in 7 km you need to do 10000 x 7. You get 70000
Have a nice day!
Answer:
700000cm
Explanation:
1 km consists of 1000m and 1 m consists of 100 cm so 7×1000×100=700000cm
Ba(OH)₂ + 2 HBr --> BaBr₂ + 2 H₂O is this a double replacement reaction
Answer:
The answer is Yes
Explanation:
Barium Hydroxide + Hydrogen Bromide = Barium Bromide + Water =
Double Displacement
What volume is occupied by 2.33 moles of an ideal gas at 0.953 atm
and 44°C?
a. 8.83 L
b. 894 L
c. 63.6L
d. 55.3 L
Answer:
WhAT
Explanation:
WTH
How many atoms of both elements are there in this molecule: 3N205; O 3 Nitrogen and 15 Oxygen 6 Nitrogen and 5 Oxygen KD 2 Nitrogen and 5 Oxygen 6 Nitrogen and 15 Oxygen
Answer:
Explanation:
oxygen is a 15 and nitrogen science chemistry i'm guessing
What are the lessons that you learn from nature
Answer:
Nature is important
Explanation:
A 3.50 L balloon contains 0.178 mol of gas. If 0.094 mol of gas is
added to the balloon, what will be the new volume?
A. 5.35 L
B. 5.79 L
C. 6.63 L
D. 185 L
Answer:
Explanation:a
Oakk
What is 24.3 – 15.45 when accounting for sig fig rules?
Answer:
8.85 because im smart
27. What element has this electron configuration: 1s2 2s22p6 352 3p6 452
3d10 4p4
Choices:
Sulfur
Selenium
Arsenic
Tellurium
Answer:
Selenium
Explanation:
One way to figure this out is to count the electrons and add them up.
2+2+6+2+6+2+10+4 = 34 electrons
A neutral atom has the same number of electrons and protons. Protons tell us the atomic number of an element. Element number 34 is Selenium.
Another way to figure it out is to look at just the highest "s" or "p" level of the electron configuration, and then see which element corresponds to that. This element has a 4s and a 4p, so I will look at 4p. The configuration is 4p4, so I will look at the 4th row of the periodic table (4p4) in the "p" block (4p4) and the 4th element in the "p" block (4p4). That's selenium :)
Hi! I'm going to give brainliest to the person who answers this first/best. It has the answer choices. Thanks!
Answer:
the answer is electron....
that is 137 words and thank ypou marked brainliest
blank is most if the compounds that make up living things?
Answer:
carbon
Explanation:
Carbon forms compounds that make up about 18 percent of all the matter in living things. The processes by which organisms consume carbon and return it to their surroundings constitute the carbon cycle.
Sodium chloride is an ionic compound - it has a melting point of 800oC whereas chlorine is a gas has a melting point of -1200C. Explain the differences in melting points of these 2 in terms of their structure and bonding
Answer:
Our discussion up to now has centered on types of bonds that involve. This kind of bonding is called ionic bonding (as you are almost certainly already aware). NaCl is a solid at room temperature, with a very high melting point (801 °C), similar highly reactive metal – sodium (Na), and a pale green gas – chlorine (Cl2).
Explanation:
I hope this is what you needed. I also hope that you have a great day.
The movement of water both on and
above Earths surface
The movement of water on and above the earth's surface is called the hydrologic cycle, or the water cycle. Hope this helps!
10. The statement that no two electrons in the same atom can have the
7. Among the following groups
of atoms, which have the same
number of electrons in their
outermost energy level?
A) Na, Mg, Al and Si
B) Ca, K, Al and Ne
C) Mg, Ca, Sr and Ba.
D) H and He
Answer:
10.the pauli exclusive principle statues that, in an atom
or molecules, no two electrons can have same four electronic quantum numbers.as an orbit can contain a maximum of only two electrons.the two electrons must have opposing spins
Help me outttttttttttt t t t. T t
Answer:
the open bag allowed the gas from the reaction to escape
A first order reaction has a rate
constant of .001 sec-1. What is the
half life in seconds) of this reaction if
the initial concentration is 2.0 M?
-hurry it’s a test
Answer:
one-half
Explanation:
cuz for a first order reaction is a half life independent of concentration and constant over time
This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of the reaction is at A, B, C, and D. Then tell if this is an exothermic or an endothermic reaction.
Answer:
uh
Explanation:
Plants made the oxygen in the air animals use to breath by
Answer:
yeppppppppppppp
Answer:
yes
plants makes the oxygen by the
process of photosynthesis and
release to environment and animals
uses these oxygen to survive on this Earth
hope it helps