Answers
Hopes this helps
Related Questions
The littoral zone is rich in nutrients
true or false
Answers
Answer:
false
Explanation:
How many cobalt atoms are in 2 moles of cobalt?
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That means that one mole of cobalt weighs 58.9332 grams (58.9332 g/mol). Based on that information, to convert 2 moles of cobalt to grams, we multiply 2 moles of cobalt by 58.9332.
12.04428152 x [tex]10^{23}[/tex] cobalt atoms are in 2 moles of cobalt.
What are moles?A mole is defined as 6.02214076 ×[tex]10^{23}[/tex]
of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
One mole of cobalt is equal to 6.02214076 ×[tex]10^{23}[/tex] atoms.
2 moles of cobalt is equal to 6.02214076 × [tex]10^{23}[/tex]atoms x 2
12.04428152 x [tex]10^{23}[/tex]
Hence, 12.04428152 x [tex]10^{23}[/tex]cobalt atoms are in 2 moles of cobalt.
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Please someone help WHATS the answer
Answers
electron configuration is the long list underneath the name "calcium" on the element. it starts with 1s^2s^2
a) Identify which one of the particles is
I) an anion.
2) a cation
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Answer: Particle F is an anion, and particle E is a cation
Explanation:
A particle is a cation if it has more protons than electrons.
A particle is an anion if it has more electrons than protons.
Hope it helps :) and let me know if you want me to elaborate.
explain why heating a solution increases the solubility of a solute
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[tex] \: \: \: \: \: [/tex]
The addition of more heat facilitates the dissolving reaction by providing energy to break bonds in the solid. This is the most common situation where an increase in temperature produces an increase in solubility for solids.hope it helps[tex] \: \: \: \: \: \: [/tex]
what are the uses of the periodic table
Answers
Answer:
In today's world, the periodic table is very valuable for both students and scientists since it allows them to forecast the sorts of chemical reactions in which a specific element is likely to engage. Rather than memorizing facts and figures for each element, students and scientists can learn a great deal by simply looking at the table. They can learn about an element's reactivity, whether it is likely to conduct electricity, whether it is hard or soft, and many other characteristics by simply looking at the table.
Groups are made up of elements that are in the same column as one another and have attributes that are comparable to one another. If we look at the first column (the alkali metals), for example, we see that they are all metals that have a 1+ charge in reactions, react quickly with water and combine easily with nonmetals.
Periods are made up of elements that are arranged in a row next to one another and have the same maximum unexcited electron energy level as one another.
The periodic table also has the advantage of providing all the information you need to balance chemical processes at a glance, which is a very valuable feature. The atomic number and, in most cases, the atomic weight of each element are included in the table. The group of an element indicates the characteristic charge of that element.
Explanation:
A species acts as a(n) _____ agent if it gains electrons in a half-reaction. Conversely, it could potentially act as a(n) _____ agent if it loses electrons in a half-reaction.
Answers
A species acts as an oxidizing agent if it gains electrons in a half-reaction. Conversely, it could potentially act as a reducing agent if it loses electrons in a half-reaction.
REDOX REACTION:
Redox (oxidation-reduction) reaction is a type of reaction that involves the loss and gain of electrons by substances involved. Redox reaction involves a reducing agent and an oxidizing agent. Oxidizing agent gains electrons in a redox reaction while reducing agent loses electrons. Oxidizing agent gets reduced in the process while reducing agent gets oxidized.Learn more about redox reaction at: https://brainly.com/question/13293425?referrer=searchResults
. Identify molecules of elements;
O2, NH3, He
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Elements can be made of one atom, like He, or be elemental molecules, such as hydrogen (H2), oxygen (O2), chlorine (Cl2), ozone (O3), and sulfur (S8). Atoms are not drawn to scale. Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form...
Select the atom that will attract the electron pair (:) more strongly (the atom with the greater electronegativity)
HELP PLEASE
Answers
I had graduated cylinder with 50 mL of water. I added a rock to the graduated cylinder and the water level rose to 56 mL. What is the VOLUME of the rock?
Answers
What will the final temperature of the a block of brass with a mass of 30.6 g is at 87.4°C
after it's added to 62.3 g of water at 28.3°C. The specific heat of aluminum is 0.380
J/gºC.
Answers
The final temperature of the block of brass with a mass of 30.6 g at 87.4°C is 30.82°C.
SPECIFIC HEAT CAPACITY:
The amount of heat absorbed or released by a substance can be calculated using the following formula:Q = m × c × ∆TQ(water) = - Q(metal)(m × c × ∆T) water = - (m × c × ∆T) metalAccording to this question;
METAL:
m = 30.6gc = 0.380 J/g°C∆T = T - 87.4°CWATER:
m = 62.3gc = 4.184J/g°C∆T = T - 28.3°C62.3 × 4.184 × (T - 28.3) = - {30.6 × 0.380 × (T - 87.4)}260.7T - 7376.8 = - {11.63T - 1016.3}260.7T - 7376.8 = -11.63T + 1016.3260.7T + 11.63T = 1016.3 + 7376.8272.33T = 8393.1T = 8393.1 ÷ 272.33T = 30.82°CTherefore, the final temperature of the block of brass with a mass of 30.6 g at 87.4°C is 30.82°C.Learn more at: https://brainly.com/question/11194034?referrer=searchResults
Count the following atoms
NEED ANSWER ASAP
Answers
You have 4 hydrogens in one NH4 compound, and you have 3 NH4, so that gives you 12 H and 3 N.
You also have a coefficient of 2 in front of (NH4)3, so that means you would multiply 12 H atoms by 2 and 3 N by 2, giving you 24 hydrogen atoms and 6 nitrogen atoms.
You also have 1 Phosphorus atom, and 4 oxygen atoms, so now add all your individual atoms up:
24 hydrogen + 6 Nitrogen + 1 Phosphorus + 4 Oxygen = 35 atoms in total
define suspension with example:
Answers
calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units
Answers
Answer:
21.2 gm
Explanation:
calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units
butane is the hydrocarbon C4H10
in combustion, we react hydrocarbons with O2 to form CO2 and H2O
so
C4H10 + O2----------------> CO2 + H2O
BALANCE
2C4H10 + 1302--------> 8CO2 + 10 H2O
the molar mass of CO2 is 12 + 16X2 = 44
64.1 gm of CO2 is
64.1/44 = 1.46 MOLES OF CO2,
FOR EVERY 8 MOLES OF CO2 WE NEED 2 MOLES OF BUTANE IT IS A
8:2 OR 4:1 RATIO. THE MOLES OF C4H10 ARE 1/4 THE MOLES OF CO2
SO
THE MOLES OF C4H10 H10 ARE 1.46/4 =0.365 MOLES
THE MOLAR MASS OF BUTANE IS 58.12
0.365 MOLES OF C4H10 HAS A MASS OF 0.365 X 58.12 = 21.2 gm
Which among the following is not present in pure sugar ?
[A] Carbon
[B] Hydrogen
[C] Nitrogen
[D] Oxygen
Answers
Answer:
Nitrogen
Explanation:
Pure sugar is sucrose C12H22011
Convert 25 gigaseconds into centiseconds
Answers
25 gigaseconds is equal to 2,500,000,000,000 centiseconds
how many different types of nucleotides are found in nucleic acids
Answers
Answer: four different types!!!!
Explanation:
Elabore el balance de la ecuación por oxido reducción enumerando cada paso
CaC2O4 + KMnO4 + H2SO4 → CaSO4 + MnSO4 + K2SO4 + CO2 + H2O
Answers
Answer:
[tex]{ \rm{5CaC _{2}O _{4(aq)}+ 2KMnO _{4(aq)} + 8H _{2} SO _{4(aq)} → 5CaSO _{4(s)}+ 2Mn SO _{4(aq)}+ K _{2} SO _{4(s)} + 10CO _{2(g)} + 8H _{2} O _{l} }}[/tex]
Explanation:
This is a redox reaction formed by combining two half equations.
Check the image above, sorry if my handwriting is poor :(
Astronomers often scan the sky using devices called radio
telescopes. What can you conclude about these devices?
Answers
Answer:
A radio telescope is simply a telescope that is designed to receive radio waves from space.
radio telescopes helps to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.
Answer: stronomers often scan the sky using devices called radio telescopes. What can you conclude about these devices? ... They pick up the radio waves emitted by stars.
Convert –26 degree Celsius temperature into kelvin .
Answers
Explain how you can find the number of neutrons in the isotope nitrogen-16
Answers
Answer:
9
Explanation:
Nitrogen-16
Atomic number of nitrogen= 7
electrons=7
protons=7
neutrons= ?
Nitrogen-'16'= 16 means the mass
16-7= 9
There are 9 neutrons in Nitrogen-16
What are the 4 properties of substances that contain Hydrogen Bonds?
Answers
Answer:
Increase in the melting point, boiling point, solubility, and viscosity of many compounds can be explained by the concept of hydrogen bonding
Explanation:
melting point- when does the solid melt to a liquid
boiling point - a temperature when a liquid will turn into a gas
solubility -solubility is ability of a substance, the solute, to form a solution with another substance
viscosity- Viscosity is a measure of a fluid's resistance to flow. It describes the internal friction of a moving fluid. ( basically how thick it is)
Answer:
Melting point, boiling point, solubillity and viscosity of many substances
Hope this helped you
What is the word equation for Sodium Hypochlorite?
Answers
Answer:
Can u phrase differently?
Answer:
If you are looking for the formula, then it is NaOCl
Explanation:
How does energy move through a wave? 3 evidence and reasons supporting you answer.
Answers
Calculate the solubility of copper (II) iodate in 0.16 M copper (II) nitrate. Ksp* is 7.4x10-8 M3. *You should know that the Ksp must refer to the copper iodate because all nitrate compounds are soluble and strong electrolytes!
Answers
Answer:
solubility in presence of 0.16M Cu(IO₃⁻)₂ = 3.4 x 10⁻⁴M*
Explanation:
Cu(IO₃⁻)₂ ⇄ Cu⁺² + 2(IO₃⁻)
C(i) ---------- 0.16M 0M
ΔC ---------- +x +2x
C(f) ---------- 0.16 + x ≅ 0.16M* 2x
Ksp = [Cu⁺²][IO₃⁻]²
7.4 x 10⁻⁸M³ = 0.16M(2x)² = 0.64x²
x = solubility in presence of 0.16M Cu(IO₃⁻)₂ = SqrRt(7.4x10⁻⁸M³/0.64M²)
= 3.4 x 10⁻⁴M*
*Note: This is consistent with the common ion effect in that a reduction in solubility is expected. The normal solubility of Cu(IO₃⁻)₂ in pure water at 25°C is ~2.7 x 10⁻³M.
A clear liquid in an open container is allowed to evaporate. After three days, a solid is left in the container. Was the clear
liquid an element, a compound, or a mixture?
Answers
The liquid did not chemically bond after 3 days, therefor it is a mixture.
Hope this helps!
what is the empirical formula of hydro carbon 7.7% by mass of hydrogen and 92.3% by mass of carbon
Answers
Answer: A hydrocarbon contains 92.3% by mass of carbon and 7.7% by mass of hydrogen. The empirical formula of the compound will be oose answer:
CH CH5 CH CH3.
Explanation: :)
Scientists theorize that the original point of matter from which our universe formed was smaller than a dime. This matter would also have:
a. had unimaginable mass
b. been incredibly dense
c. had unimaginable potential energy
d. all of the above
Answers
ANSWER:
B. been incredibly dense? I'm not sure sorry
What do the electron configurations of the elements Mo and Pt have in common?
Answers
Answer:
All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.
Explanation:
use the principles of atomic structure and/or chemical bonding to explain each of the following. in each part, your answers must include references to both substances. the atomic radius of li is larger than that of be. the second ionization energy of k is greater than the second ionization energy of ca. the carbon-to-carbon bond energy in c2h4 is greater than it is in c2h6. the boiling point of cl2 is lower than the boiling point of br2.
Answers
1. Atomic Radius:
Atomic radius increases down a group and decreases across a period. Lithium (Li) has a larger atomic radius than beryllium (Be) due to Li's additional electron shell. Be has fewer shells, resulting in a smaller radius.
2. 2nd Ionization:
Second ionization energy is the energy needed to remove a second electron. Potassium (K) has higher second ionization energy than calcium (Ca) due to K's electron configuration ([Ar] 4s¹), requiring breaking into a filled shell.
3. C-C Bond:
Carbon-to-carbon bond energy differs based on bond type. Ethene (C₂H₄) has a stronger double bond, requiring more energy to break, while ethane (C₂H₆) has a weaker single bond.
4. Boiling Point:
Boiling points relate to intermolecular forces. Chlorine (Cl₂) has lower boiling point due to weaker dispersion forces compared to bromine (Br₂), with stronger dispersion forces leading to higher boiling point.
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