Answer:
Oganesson!
It is a synthetic chemical element with the symbol Og and atomic number 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research in Dubna, near Moscow, Russia, by a joint team of Russian and American scientists.
Answer:
the last element is ogasnesson
Which row gives the correct order of reactivity of the four metals?
(look at the attached photo)
Answer:
D
Explanation:
Answer:
C) gold - zinc - magnesium - lithium
Which property is typical of a covalent compound?
A.
They are extremely hard solids.
B.
They have low melting and boiling points.
C.
They conduct electricity.
D.
They have rigid crystal structures.
E.
They exist only as gases and liquids.
Answer:
low m.p and b.p
Explanation:
hope u like the ans
Answer:
The property that covalent compound is they have low melting and boiling points
A molecule of glucose is comprised of 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen.
According to the information given above, what is the molecular formula of glucose?
Answer:
C6H12O6 the third choice
According to the given information , the molecular formula or the chemical formula of glucose is C₆H₁₂O₆.
What is chemical formula?Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
Learn more about chemical formula,here:
https://brainly.com/question/29031056
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Explain how force can be manipulated so objects with
different masses can fall at the same speed.
(Please help!)
Sheryl sketched models of two different neutral isotopes of carbon. If the isotope models are accurate, which statement might be true? (Refer to the periodic table if necessary.) O A. One shows 6 neutrons, and one shows 8. O B. One shows 5 protons, and one shows 7. O c. One shows 6 protons, and one shows 7. D. One shows 6 electrons, and one shows 5.
Answer:
O A. One shows 6 neutrons, and one shows 8.
Which coefficients will balance the reaction? ___CO + ___O2 ->___CO2
Answer:
in question
in question put the variable like
in question put the variable like 2,2,1
in question put the variable like 2,2,1 this is correct answer of this question
in question put the variable like 2,2,1 this is correct answer of this question hope it will help
in question put the variable like 2,2,1 this is correct answer of this question hope it will helpoption B is correct answer
If there are 20.0g of KOH available, how many grams Ca(OH)2 will form?
I got a weird answer, so can someone explain?
Answer:
can u send the qsn 4rm the start so tt I can help
an element will always have the same number of?
A.Protons
B. Atoms
C. Isotopes
D. Neutrons
Answer:
A protons
Explanation:
the number of protons in the nucleus of every atom of an element is always the same.
how do I out pizza the hut?
Answer:
you get one of their pizzas and then put more toppings on cheese on the pizza
Explanation:
What experiment did J. J. Thomson do?
A. He sent a cathode ray between electrically charged metal plates.
B. He suspended charged oil drops in a chamber.
C. He hit metal plates with light.
D. He shot alpha particles through gold foil
Answer:
A. He sent a cathode ray between electrically charged metal plates
Question 3 of 5
The hottest stars tend to be which color?
A. Red
B. Yellow
C. White
D. Blue
Answer:
Answer is D.Blue.
Explanation:
The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.
I hope it's helpful!
Answer:
D.Blue
Explanation:
A prokaryotic cell does not have
А
a cell membrane.
B
genetic material.
C
a nucleus.
D
flagella.
Answer:
D
Explanation:
You have 1.6 x10 21 atoms of oxygen, what is the mass of that number of atoms
Answer: 166.023×1023
Explanation:
Mass of 6.023×1023 atoms of oxygen = gram atomic mass of oxygen.
Mass of 6.023×1023 atoms of oxygen = 16g
∴ Mass of 1 atom of oxygen =166.023×1023
Why can't krypton and xenon separate during the separation of gases in the air?
Answer:
The remaining gas is a mixture of argon, neon, krypton, and xenon. Because these elements are chemically very unreactive, chemical means cannot be used to separate them.
Explanation:
Answer:
They're in Group 0 as they have full outer shells meaning they are chemically unreactive as they already have full outer shells meaning they don't want to lose or gain any electrons. Thus, they can't separate during the separation of gases in the air.
The graph below shows how the amount of carbon dioxide (CO2) in our atmosphere has changed since 1960. A graph that plots the amount of atmospheric carbon dioxide in the atmosphere from 1960 to approximately 2005. The x-axis shows the time in years. The y-axis shows the carbon dioxide concentration in parts per million. The concentration is increasing over time. Based on the information given in the graph, which of these phenomena has likely increased since 1960?
land erosion
coastal erosion
ozone depletion
greenhouse effect
Answer:
greenhouse effect
Explanation:
Answer: greenhouse effect
Explanation:
the greenhouse effect increases the Earths temperature which is why there is an increase in CO2
Which of the following forms of energy is not transmitted in waves?
Question 5 options:
light
sound
electrical
heat
Answer:
light
Explanation:
i did the quiz
What term is used when heat is absorbed by a reaction, thus leaving the surroundings colder
The diagram shows a vertical number line. A vertical line with arrowheads at both ends has tick marks every 4 units with the tick marks for negative 4, 0, 8 labeled. The tick mark two past 8 has an X next to it. What is the position of point X? –16 –12 12 16
Answer:
16
Explanation:
Answer:
its 16
Explanation:
i took the quiz and it was right
How many atoms of titanium are in 0.085 mol of titanium
Answer:
5.12x10^23 atoms
Explanation:
To find atoms, you need to use Avogadro's number. Here is the equation:
0.085 mol x 6.022x10^23 atoms = 5.12x10^22 atoms of titanium
Keep in mind that units need to cancel and make sure to double check those sig figs!
Select the correct answer.
The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of these elements regarding their ionization energy?
A.
Ca < Be < Sr
B.
Sr < Be < Ca
C.
Be < Ca < Sr
D.
Sr < Ca < Be
E.
Ca < Sr < Be
Answer:
d. The correct answer for your questions is Sr<Ca<Be
Answer:
Answer:- choice d is correct. Sr<Ca<Be .
Explanations:- Br, Ca, and Sr are all elements of same group as they all have 2 valence electrons. As we move down in a group, a new shell is being added that increases the size of the atom. As the size of an atom increases, it is easy to remove the electron from it's outer most shell in it's gaseous state. Since, Be is above Ca and Ca is above Sr. The size increases in the order, Be < Ca < Sr. It means Be is the smallest one of them and so it's hard to remove from it's outer most shell and hence it's ionization energy is higher.
Sr is largest one in these three elements and so it's easy to remove outer most electron from it that means the ionization energy is least. Ca is between Be and Sr.
So, an increasing order of ionization energy is Sr<Ca<Be . Choice D is correct.
Use the drop-down menus to select the names of the labeled structures.
A:
B:
C
Answer:
A:petal
B:pistil
C:stamen
Explanation:got it right on edu 2021
Answer:
C
A
B
Explanation: on ED about Identifying Earth’s Layers
How is the polar vortex different from the jet stream?
why is this mars landing a new era for space exploration
Answer: The scientific reasons for going to Mars can be summarised by the search for life, understanding the surface and the planet's evolution, and preparing for future human exploration. Understanding whether life existed elsewhere in the Universe beyond Earth is a fundamental question of humankind.
Explanation:
The ____________________ package and distribute materials to other parts of the cell.
The method by which the substances in a mixture are separated is called what?
Answer:
Filtration is a separation method used to separate out pure substances in mixtures comprised of particles some of which are large enough in size to be captured with a porous material.
Does transfer RNA perform its function in the nucleus or cytoplasm? Explain.
Answer:
Explanation:
Although tRNAs participate in the essential function of protein translation in the cytoplasm, tRNA transcription and numerous processing steps occur in the nucleus.
Transfer RNA carries amino acids to the ribosome and adds them to the growing protein, copies the coded message from the DNA in the nucleus and carries the message to the ribosome in the cytoplasm.
Which of these is the main difference between aerobic respiration and anaerobic respiration?
Answer:
Aerobic Respiration
It can be found in the cytoplasm and the mitochondria.
Glucose breaks down into carbon dioxide and water.
Anaerobic Respiration
It can be found only in the cytoplasmic.
Glucose breaks down into ethyl alcohol, carbon dioxide and energy
What volume of ammonia (NH3) will react completely with 25.0 liters of O2? 4 NH3 + 3 O2 ---> 2 N2 + 6 H2O
Answer:
18,75 litres
Explanation:
4 NH3 + 3 O2 ---> 2 N2 + 6 H2O
n (NH3) : n (O2) = 4 : 3
<=>
V (NH3) : V (O2) = 4 : 3
Hence, V(O2) = 3 × V (NH3) ÷ 4 litres
V(O2) = 3 × 25.0 ÷ 4 litres
V(O2) = 75 ÷ 4 litres
V(O2) = 18,75 litres
If you have any questions, feel free to ask :)
Zn + 2HCl → ZnCl2 + H2
What is the half reaction for the reduction of hydrogen in the reaction?
Answer:
2H^+ +2e -> h2(g)
Explanation:
Since hydrogen is reduced, look for a decrease in oxidation number and the gain of electrons.
Answer:
ZnCl2 + H2
Explanation:
got it correct!
What are the number of atoms in chromium
Answer: The correct answer is 24
Explanation:
