Answers
Answer:
Situation 7, also thats funny you were playing nurses office. I like that song. Hope this helped!
Related Questions
Cuantos gramos de nitrato de potasio (KNO3) son necesarias para preparar 800ml de solucion al 12 % m/v
Answers
Answer:
96 g
Explanation:
Tomando en cuenta que estamos hablando de una solución de Nitrato de potasio cuya concentración es 12% m/V, debemos entonces usar la expresión de %m/V:
%m/V = msto / Vsol * 100 (1)
De esta expresión, debemos despejar la masa de soluto (msto) que es precisamente el valor que estamos buscando. Al hacer el despeje tenemos:
msto = %m/V * Vsol / 100 (2)
Ahora solo nos queda sustituir los valores dados y resolver:
msto = 12 * 800 / 100
msto = 96 g de KNO₃Espero te sirva.
Plz help me with these three please please !!!!!
Answers
Explanation:
Cations are positively charged ions with fewer electrons than protons. To partake in reaction, metals lose electrons to achieve a stable octet configuration. It has lost valence electrons and wold have a positive charge associated with it.
Potassium is a group 1 element. A metal.
Potassium has 1 valence electron so it loses the valence electron to form a stable octet.
A potassium ion has a positive charge and therefore cannot be an anion but is a cation.
The group number pretty much denotes the number of valence electrons.
Group 1 = 1
Group 2 = 2
Group 17 = 7
Group 18 = 8
How are a carrot, an amoeba, and a bacterium alike?
They are prokaryotes.
They are eukaryotes.
They are all made of cells.
They all live in soil.
Answers
Answer:
They are all made of cells
Answer: They are all made of cells.
Explanation:
HELPPPPPPPPPPP HELPPPPP HELP
Answers
Answer:
calcium chloride and water
Explanation:
the reaction absorbed energy which means endothermic
What unit is used to measure weight?
Answers
The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.
Answer:
The unit is: Newton.
Hope it helps:D
SO IM DOING A SCIENCE FAIR PROJECTABT BATH BOMBS AND I NEED NAMES CAN YOU GUYS DROP NAME IDEAS FOR MY PROJECT PLEASEE
ITS ABOUT BATH BOMBS
Answers
BATH BOMB 1
BATH BOMB 2 WILLLLLLLLLLLL
HOPE I HELPED UWU
BATH BOMB 3
BATH BOMB 4
What is the oxidation number for Cl?
2
+1
-1
+2.
Answers
Answer:
-1
Explanation:
which cycle results in death of the host cell
A.lytic cycle
B.lysogenic cycle
C.both
Answers
Answer:
A. lytic cycle is the correct answer
Triphosphorous hexoxide formula
Answers
Answer:
P3O6
Explanation:
Tri=3 Hex=6
Wastewater filtration
Pros and cons of secondary water filtration?
Answers
• Water filtration is cost effective, and it does not require a lot of money to maintain
•It is very easy and straightforward to use
Cons:
•Thorough cleaning and care of the equipment is very vital so that they can carry out the water softening process without any hitch whatsoever
“Sewage"; used water from a community (homes, businesses and industries, stormwater runoff)
Type
Pros
Cons
Pitcher
Low upfront cost; no installation needed.
Does not remove all contaminants; filters must be changed every couple of months and will increase the yearly cost of the filter system; filtration is slow.
Faucet/On the Counter
Relatively inexpensive; can switch between filtered and unfiltered water; easy to install; ideal for drinking and cooking water.
Faucet mounted may not fit on all faucets; decreases flow rate; filters are changed every couple of months.
On the counter may require some installation and can take up space; can sometimes be expensive.
Under-sink
Filter system is out of sight; infrequent filter changes; ideal for drinking and cooking water.
Requires installation; can sometimes be expensive; takes up cabinet space.
Whole House
Whole house kept clean from one system; various processes available; if system uses filters they are changed every couple of years.
Professionally installed; very expensive.
Reverse Osmosis
Removes most unwanted contaminants.
5-step process; filters replaced frequently; very expensive; wastes a lot of water.
Distillation
Removes heavy metals, fluorides and bacteria.
Not energy efficient; takes up a lot of space; very expensive.
Ultraviolet (UV)
Does not use heat or chemicals to remove contaminants.
Any color in water will prevent UV from working; sometimes filtration is necessary prior to UV; has a low effectiveness for removing chemicals.
Hope all these helps
1.Let's say you could see inside of the nucleus of a Silver atom and inside the nucleus of a Cobalt atom. How would they look different?
2.If a substance has no (or almost no) likelihood of undergoing a chemical reaction with another element it is said to be:
a.Ionized
b.Malleable
c.Reactive
d.Inert
e.An Isotope
3. Evaluate this sentence and explain why it is incorrect:
“Neon came into contact with Iron and the reaction was very explosive.”
4. Mr. Carney does and experiment. He weighs himself. He weighs 210 lbs. He then runs 15 miles. Then weighs himself. He now weighs 200 lbs.
Explain the conservation of mass using this experiment as your example.
NEED ANSWERS NOW DUE TODAY
Answers
1. A silver atom would have 47 protons and more neutrons than a cobalt atom and a cobalt atom would only have 27 protons and less neutrons than a silver atom.
2. D. Inert Inert means non-reactive.
3. Neon gas is a Nobel gas on the right side of the periodic table so it is an inert gas and does not react with iron.
4. Mass is neither created or destroyed so as Mr. Carney ran carbon in his body left as carbon dioxide. So the 10 lbs he lost left his body as CO2 through the lungs.
The general oxidation of a metal ( M ) by a copper ion ( Cu2+ ) is M(s)+Cu2+(aq)⟶M2+(aq)+Cu(s) All the listed metals can be oxidized by Cu2+ ions but the reactions will occur at different rates. Arrange the metals based on how quickly each oxidation by Cu2+ ions should occur.
Answers
Answer:
Ba, Ca, Mn, Ni
Explanation:
why is digital better then analog music
Answers
Once a digital recording is made, the bandwidth is set in place. An analog recording is considered unlimited. Therefore, it can move to a higher and higher resolution without losing its original quality.
pleaseeeee I really need help :3
Answers
Answer:
C. 5 inches
Explanation:
don't worried, i learned that from my teacher
Give an example of elastic potential energy
Answers
Answer:
An archer's stretched bow.
Explanation:
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.
You have been given a choice of four elements; Lithium, Magnesium, Sulfur, and Bromine. You must decide which two elements would form a compound that has one atom of the metallic atom and two of the non-metallic atom in the final neutral compound. Which choice lists the two atoms with the correct formula for the compound?
A.
Magnesium and Sulfur; MgS2
B.
Lithium and Bromine; LiBr2
C.
Lithium and Sulfur; Li2S
D.
Magnesium and Bromine; MgBr2
Answers
The compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
The periodic table has been the arrangement of the elements with increasing atomic number and similarity in the reactivity.
The metals in the periodic table are elements that has been able to accept electrons, and nonmetals are the elements in the table that loses electrons to attain the stable noble gas configuration.
Formation of a neutral compoundThe metal and nonmetal form the neutral compound when there has been the formation of stable compound with the complete configuration.
The magnesium and lithium has been metals, while sulfur and bromine are nonmetals. Bromine has been the element of group 17. It has been able to gain an electron. Sulfur has been the nonmetal and required 2 electrons to complete its octet.
Lithium has been the metal with one valence electron, and magnesium with 2 valence electrons.
The neutral compound to be formed has been consisted of one metal with 2 valence electrons, and 2 nonmetals with 1 valence electrons.
Thus, the compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
Learn more about neutral compounds, here:
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how many grams of PH3 will be produced if 6.0 l of H2 are used?
Answers
Mass of PH3= 6.086 g
Further explanationGiven
6.0 L of H2
Required
mass of PH3
Solution
Reaction
P4 + 6H2 → 4PH3
Assumed at STP ( 1 mol gas=22.4 L)
Mol of H2 for 6 L :
= 6 : 22.4 L
= 0.268
From the equation, mol PH3 :
= 4/6 x moles H2
= 4/6 x 0.268
= 0.179
Mass PH3 :
= 0.179 x 33,99758 g/mol
= 6.086 g
What is the total amount of heat energy, in
joules, absorbed by 25.0 grams of water when the
temperature of the water increases from 24.0°C to
36.0°C?
Answers
Answer:
0.84
Explanation:
total heat energy =mass ×specific heat capacity (4.2kJ)×temp change
mass=25g convert to kg to get 0.025
specific heat capacity is 4.2
temp change=36.0-24.0=8.0
q = mC∆T
m=25.0
c=24.0
ΔT=36.0
25.0 * 24.0 * 36.0 = 21,600 jules
The equation q = MC ∆ T, where m is the sample mass, c is the specific heat, and ΔT is the temperature change, can be used to determine the amount of heat acquired or lost by a sample (q).
How can you figure out how much energy was consumed?
This is simple to perform; to calculate the amount of heat absorbed, multiply the substance's heat capacity by its mass and the temperature change.
The specific heat capacity of a substance is the amount of energy needed to raise the temperature of 1 gram of that substance by 1 degree Celsius. With a value of 4.18 J/g/°C, water has one of the highest heat capacities.
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bro needs help
32.5 grams of NaOH reacts with an excess of CO2
2NaOH(s) + CO2(g) ⇒ Na2CO3(s) + H20
What is the theoretical yield of Na2CO3 in grams?
*** I NEED YOU TO SHOW YOUR WORK BROS, I ALREADY HAVE THE ANSWER (43.1g) ***
Answers
(NH4)2SO4. How many N are there?
Answers
Explain
Hope it help u
What is the mass of 3.5 mol of MgBr2?
Answers
Answer:
The answer is 0.0054314469917931.
Explanation:
I assume you are converting between moles MgBr2 and gram. You can view more details on each measurement unit: molecular weight of MgBr2 or grams This compound is also known as Magnesium Bromide.
Precautions to take during electroplating
Answers
Answer:
Always be scared of electroplating. ...
Follow all electrical safety precautions. ...
Use all safety Precautions. ...
Use that Fume Hood. ...
It's a chemistry lab, set it up like one. ...
Always add acid to water. ...
Don't overheat your solutions! ...
Don't mix acid and cyanide solutions.
What two types of matter are closest in
density? How do you know?
ings.
Answers
Answer:
Density: The molecules of a liquid are packed relatively close together. Consequently, liquids are much denser than gases. The density of a liquid is typically about the same as the density of the solid state of the substance.
In a gas, the distance between molecules, whether monatomic or polyatomic, is very large compared with the size of the molecules; thus gases have a low density and are highly compressible. In contrast, the molecules in liquids are very close together, with essentially no empty space between them
I hope it helps you
Does the size of the solute (sugar) affect the rate of dissolving?
Answers
Answer:
Yes
Explanation:
The rate at which a solute dissolves depends upon the size of the solute particles. Dissolving is a surface phenomenon since it depends on solvent molecules colliding with the outer surface of the solute.
Brainliest?
What is the smallest unit found in a bar of gold. A. atom. B. Cell. C. Element. .D Nucleus PLEASE HELP
Answers
Answer:
c. element
Explanation:
Because gold is its own element, a gold bar is only made of one element.
The smallest unit found in a bar of gold is the nucleus of its atom. The core of an atom is called its nucleus which contains the nucleons protons and neutrons.
What is nucleus?An atom is composed of nucleons and electrons. The core of an atom is called its nucleus. Protons and neutrons are located inside the nucleus. They are called the nucleons.
The electrons are revolving around the nucleus through circular trajectories of fixed energies. Every elements are composed of their atoms. Atoms of different elements combine together to form compounds.
Gold is 79th element in periodic table. It is a transition metal in d-block. As every other elements the smallest unit are atoms where the atomic nuclei are even smaller units.
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A2B8 + C2 - B2C + AC2
Answers
Answer:
You need to put more info! If you are trying to find the GCF its 1
Which of the following are held together by nonpolar covalent bonds? PLEASE HELP
Answers
Answer:
The atoms of chlorine are held together by non-polar covalent bonds. Covalent bonds are formed between two or more atoms having zero or very small electronegativity difference. For homonuclear molecules where the two bonding atom are of the same kind, the electronegativity difference is zero.
C. Atoms of chlorine (CI)
A covalent bond is created when the electrons from the two involved atoms are shared equally.The pair of electrons involved in this kind of bonding is referred to as the shared pair or bonding pair. Here the atoms of chlorine have non-polar covalent bonds. The correct option is C.
What are non-polar covalent bonds?A non-polar covalent connection is created when atoms with an equal amount of electrons share one another. The electronegativity of the two atoms is equivalent. When two atoms with similar electron affinities join together, like in the case of diatomic elements, it happens.
Non-polar covalent compounds are those in which there is no variation in electronegativity. In these compounds, the electronegativity does not change, preventing the motion of the bond pair's electrons in the direction of the linked atoms.
As a result, a molecule is non-polar and non-conducting since there is no bond or dipole moment between its atoms and no buildup of charges on the atoms.
Thus the correct option is C.
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Consider the rate law below.
R=k[A]2
What effect does doubling the concentration have on the rate?
A. doubles the rate
B. triples the rate
C. quadruples the rate
D. no effect on the rate
Answers
C. quadruples the rate
Further explanationGiven
The rate law :
R=k[A]²
Required
The rate
Solution
There are several factors that influence reaction kinetics :
1. Concentration 2. Surface area 3. Temperature 4. Catalyst 5. Pressure 6. StirringThe rate is proportional to the concentration.
If the concentration increased, the reaction rate will increase
The reaction is second-order overall(The exponent is 2)
The concentration of A is doubled, the reaction rate will increase :
r = k[A]² ⇒ r= k[2A]²⇒r=4k[A]²
The reaction rate will quadruple.
How old is the earliest ancestor of the Clarinet?
Answers
Answer: I believe 1838
Explanation:
Answer:
1838 is the correct answer, hope this helped
What is the purpose or role of the urinary and excretory systems?*
A. digest food materials that come into the body
B. filter and remove liquid and solid waste
C. transport wastes throughout the body. D.regulate the body using hormones
Answers
Explanation:
B. filter and remove liquid and solid waste