Answers
Related Questions
Using the diagram, which two planes would intersect in HG?
Answer please .. :)
Answers
Answer:
I think D
Explanation:
it has both H and G in the planes.
Balance the following equation: N2 + H2 --> NH3
Write the coefficients that you decide balance the equation like this 3, 4, 3. If you do not add a coefficient in front of an element or compound, use a 1 in your answer. For instance the for this balanced equation: 2H2 + O2 --> 2H2O you would write your answer: 2, 1, 2
Answers
Answer:
3, 2
Explanation:
Balanced equation:
N2 + 3 H2 = 2 NH3
Which of the following are parts of the Nervous System?
Choose all the apply
Nerves
Brain
Heart
Skin
Spinal Cord
Lungs
Answers
Answer: Nerves, Brain and spinal cord
Explanation:the other choices are either part of the cardiovascular system or the respiratory system
NEED HELP ASAP 50 POINTS WILL MARK BRAINLIEST!
Answers
Answer:
156748
Explanation:
The first number is on the magnetism card 1
The combination contains only the numbers found on the cards showing techniques to separate mixtures 1,5,6,7,8
The last number is on the filtering card
The red is in the middle half of 8 is 4
Scientists are trying to control the Maillard reaction by?
Answers
Answer:
Intervention of Maillard reactions by the addition of natural and synthetic chemical compounds has previously been directed toward removing one of the reactants (the amino groups or the reducing sugars) or adding sulfur-containing compounds, such as sulfur dioxide or N-acetyl cysteine, which inhibit the reactions
Explanation:
Stoichmetric calculations must not be based on the limiting reagent
true or false
Answers
Answer:
Ture
Explanation:
Ture
True
True
True
How do I balance Ga(NO3)3 + Hg2(Cl2) -> Hg2(NO3)2 + Ga(Cl)3
Answers
Answer:
2Ga(OH)3 + 3Hg2Cl2 → 6Hg(OH) + 2GaCl3
Explanation:
Answer: 2Ga(OH)3 + 3Hg2Cl2 → 6Hg(OH) + 2GaCl3
reaction type: Double Displacement
Which is which, acid or base?
Answers
Answer:
HCI - BASE
KOH - ACID
H2SO4 - ACID
H30 + :- BASE
NAOH - ACID
PLEASE HELP I WILL MARK YOU BRAINLIEST !!If you react 4.25 moles of FeCl2, how many moles of Cl2 did you also react?
ILL GIVE 12 POINTS TOO PLEASE IM BEGGING FOR HELPPPPP
Answers
Calculate the amount of copper obtained by this reaction
Answers
as the temperature in a pressure cooker rose from 383 k to 431 k, the pressure rose to 1.16 atm. what was the original pressure of the cooker? plz name the gas law as well
Answers
Answer:
1.031atm
Explanation:
1.
John ground some coffee beans into little pieces. He put them into a coffee filter and poured
800 cm3 of boiling water over them to make a jug of coffee.
coffee filter
Coffee
Beans
ON
jug of coffee
(a) Complete the sentences below. For each sentence, choose one of the following
words.
insoluble
soluble
solution
solvent
(0)
The liquid in the jug is brown because parts of the coffee beans
are
in water.
1 mark
Answers
Al derretirse los cubos de hielo cómo será ahora la fuerza de atracción con respecto a la fuerza de repulsión
Answers
Answer:
La fuerza de atracción en el hielo sólido, que es un compuesto molecular, se debe al enlace de hidrógeno (que es la fuerza intermolecular más fuerte) entre las moléculas individuales de agua, por lo tanto, el hielo sólido es bastante fuerte y se mantiene en una estructura rígida.
Cuando el hielo se calienta, las moléculas absorben suficiente energía y, en lugar de solo la vibración del hidrógeno dentro de un área muy pequeña, los enlaces de hidrógeno se doblan y se estiran, con los ángulos y la longitud de los enlaces oscilando dentro de los rangos esperados.
Como tal, las fuerzas de atracción en el agua líquida son menores que las del hielo y las fuerzas de repulsión entre cargas similares tienen un efecto mayor en la plasticidad del agua que el hielo.
Explanation:
1. Using the structural formulas for ammonia (NH3 on the left) and hexane (C6H14 on the right) below which statement explains what will happen when ammonia and hexane are mixed?
A. Hexane will dissolve with ammonia if you stir them together for 10 minutes
B. Ammonia and hexane will not dissolve because one molecule is polar and the other is non polar.
C. Ammonia and hexane will dissolve together
D. Ammonia and hexane will not dissolve because one molecule is ionic and the other is non polar
2. If you add water to 750.0 mL of a 2.800 M KCl solution, and its molarity changes to 1.500 M, what will the new volume be?
1200 mL
401.0 mL
1400 mL
800.0 mL
Answers
Answer:
1. B. Ammonia and hexane will not dissolve because one molecule is polar and the other is non polar.
2. 1400 mL
Explanation:
In chemistry, like dissolve like! Ammonia is a polar molecule having a significant dipole moment owing to its three N-H bonds. On the other hand, hexane is a purely non-polar hydrocarbon hence the two substances can never dissolve in each other.
From the dilution formula;
C1V1=C2V2
C1= Initial concentration of the solution
V1 = Initial volume of the solution
C2 = Final concentration of the solution
V2= Final volume of the solution
2.8 M * 750.0 mL = 1.5 M * V2
V2 = 2.8 M * 750.0 mL/1.5 M
V2 = 1400 mL
Question 25 points)
Obsidian is a glassy black igneous rock. A sample of obsidian is shown.
Which type of rock forms in a similar manner as obsidian but at a slower
rate?
Oa
Oь
Ос .
Od
schist, which forms under extreme heat and pressure
conglomerate, which forms when different-sized sediments cement together
gypsum, which forms when water evaporates and leaves behind minerals
granite, which forms as magma cools deep underground
Answers
Answer:
Granite
Explanation:
Answer:
Granite
Explanation:
Igneous forms when rock is cooled and hardens by Magma.
And the option granite, which forms as magma cools deep underground
Hope it helps have a Good Day
Which, if any, of the following is named incorrectly? *
A) FeSO4; iron (II) sulfate
B) Fe(OH)2; iron (III) hydroxide
C) K3P; potassium phosphide
D) Sn3(PO4)4; tin (IV) phosphate
Answers
Answer:
I think it is either a or b
Explanation:
c or d has the correct names and Roman numerals.
What is the electron configuration of the calcium ion?
Answers
Let me know if you want a step by step!
Hope that helps
Answer: Calcium ion Ca² : 1 s² 2s² 2p ^6 (sorry I don't get 6 similar way as 2) 3s² 3p^6
Also 18 electrons, because Calcium donates two 4s electrons
Explanation:
Given two balanced equations, each representing a reaction:
(1) Equation 1 shows 2.2 X 105 times more energy being absorbed. (\
2) Equation 2 shows 2.2 X 105 times more energy being absorbed.
(3) Equation 2 shows 2.2 X 105 times more energy being released.
(4) Equation 1 shows 2.2 X 105 times more energy being released.
Answers
Answer:
There is a hack in forms that forms gives u the answer hold ctrl + u, and scrool to the bottom he read the part with the question and there will be an answer.
Mark as brainliest if im right good luck
2NO (g) + O2 (g) →2NO2 (g) At equilibrium [NO] = 2.4 × 10 -3 M, [O2] = 1.4 × 10 -4 M, and [NO2] = 0.95 M.
Answers
Answer:
[tex]K=1.12x10^9[/tex]
Explanation:
Hello there!
Unfortunately, the question is not given in the question; however, it is possible for us to compute the equilibrium constant as the problem is providing the concentrations at equilibrium. Thus, we first set up the equilibrium expression as products/reactants:
[tex]K=\frac{[NO_2]^2}{[NO]^2[O_2]}[/tex]
Then, we plug in the concentrations at equilibrium to obtain the equilibrium constant as follows:
[tex]K=\frac{(0.95)^2}{(0.0024)^2(0.00014)}\\\\K=1.12x10^9[/tex]
In addition, we can infer this is a reaction that predominantly tends to the product (NO2) as K>>>>1.
Best regards!
Please help will mark Brainliest!!!
How many grams of HCL (hydrochloric acid) can you make with 50 grams of Cl.
H + Cl -> HCL is the balanced equation
Answers
Answer:
Explanation:
It's 21 /
The diagram shows the molecular structure of butane. What is the chemical
formula for butane?
Butane
H
Н
Hн
н—с-с-с-с-Н
|| []
Н н н Н
А. 4C1ОН
В. С4Н10
С. 4CH10
D. HC4H
Answers
Answer: B
Explanation: sorry if I'm too late but i just did this question and that was the right answer
What is the specific heat, thermal conductivity, density of polyurethane foam?
Answers
15. _____ is the breakdown of rocks into smaller particles by natural processes.
A. Deposition
B. Weathering
C. Erosion
Answers
Answer:
B
Explanation:
Weathering is the physical and chemical breakdown of rock at the earth's surface. ... The physical breakdown of rock involves breaking rock down into smaller pieces through mechanical weathering processes. These processes include abrasion, frost wedging, pressure release (unloading), and organic activity.
khan academy sucks. can someone answer this? :)
Answers
The answer is A. 80Se2-
El ozono es una sustancia pura cuya molécula está formada por tres átomos de oxígeno, O3. Se encuentra en pequeñas cantidades en la estratosfera formando una ligera capa alrededor de la tierra. El ozono es un filtro para ciertas radiaciones como los rayos ultravioleta que provienen del sol y son muy perjudiciales. Desde hace varias décadas se ha observado una disminución de O3 en el polo sur y comienza a disminuir en el polo norte formando un agujero en esta capa. Qué consecuencias trae para los seres vivos la destrucción de la capa de ozono y cómo podría revertirse este deterioro en dicha capa?
Answers
Answer and Explanation:
Dado que la capa de ozono protege la vida en la Tierra actuando como filtro de radiaciones nocivas del Sol, su destrucción trae como consecuencia un aumento de la radiacion UV que puede provocar:
- daños en animales y en el hombre: aumento de casos de cáncer de piel, cataratas en ojos, debilitamiento del sistema inmune.
- alteración en el desarrollo de especies vegetales .
- contribución al efecto invernadero y al calentamiento global.
Para revertir el deterioro de la capa de ozono, podemos tomar algunas medidas:
- no utilizar productos que contengan clorofluorocarbonos (CFC), como por ejemplo algunos aerosoles.
- evitar el uso de productos que contengan halones
- evitar el uso de hidrofluorcarbonos (HFCF)
Estos compuestos químicos reaccionan y destruyen el ozono, por lo que si evitamos utilizarlos, con el tiempo la capa de ozono se recuperará.
I need help please i need to turn this in today
Answers
Answer:
Natural phenomena such as melting glaciers is due to the rise in temperature. This will result to extinction of flora and fauna. Moreover it can cause extreme flooding due to rise in water level in other water bodies such as rivers, lakes
which has the higher temperature? An iceberg or a steaming cup of water?
Answers
To have zero heat energy a substance has to be at absolute zero. This is 0˚K which equals -273˚C. So there’s already a lot of heat energy in a substance at 0˚C. The amount of heat energy per degree per gram varies depending on the temperature, but in rough terms a gram of ice contains 2.11 Joules for every ˚C above -273˚C. So a gram of ice at 0˚C contains roughly 273*2.11 = 576 Joules of heat energy.
It then takes an additional 334 Joules to melt a gram of 0˚C ice into a gram of 0˚C water. After this a gram of water requires 4.19 Joules for every ˚C above 0˚C, and so heating this water up to 100˚C then requires 100\times 4.19=419 Joules per gram. So the total heat energy in a gram of 100˚C water is 576+334+419=1329 Joules.
Putting this together means that a gram of boiling water contains 1329/576 = 2.3 times as much heat energy as a gram of 0˚C ice, or put another way, 2.3 grams of ice contains the same heat energy as 1 gram of boiling water.
So in answer to the question if you freeze 2.3 cups of water to just 0˚C, the resulting ice will contain roughly the same heat energy as 1 cup of water at 100˚C. Ice out at sea may of course be a few degrees cooler and so you’d need a little more, but you certainly don’t need anything like an iceberg!
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Related Questions (More Answers Below)
What is a force is needed to stop a child form slipping on ice
Answers
Answer:
Friction. Hope I helped.
For which of the reactions listed below will Gibbs free energy always be.
positive?
O A. An exothermic reaction that decreases in entropy
B. An exothermic reaction that increases in entropy
O C. An endothermic reaction that decreases in entropy
D. An endothermic reaction that increases in entropy
Answers
I think the answer is: C. An endothermic reaction that decreases in entropy
An endothermic reaction that decreases in entropy. Hence, option C is correct.
What is entropy?Entropy is the energy of a system that is unuseful to do work.
For a reaction to be spontaneous, the Gibbs' Free Energy must be negative.
The equation for Gibbs Free energy is given by:
G= H-TS
Where, G = Gibbs free energy
H = Enthalpy of the reaction
T = Temperature of the system
S = Entropy of the system
Sign convention for all the quantities:
For H: It is negative for exothermic reactions and positive for endothermic reactions
For S: It is positive when there is an increase in entropy and it is negative when there is a decrease in entropy.
If we want G to be negative, the conditions necessary are:
G= (-ve) - (+ve) = -ve
The product of temperature and entropy must be positive and that will be positive when there is increase in entropy at any temperature.
Hence, option C is correct.
Learn more about enthalpy and entropy, here:
brainly.com/question/8916312
#SPJ5
LOSPICNOMEWTROS SON INSTRUMENTOS EMPLEADOS PARA CALCULAR DENSIDADES DE SUSTANCIAS LIQUIDAS. SE REALIZO UN EXPERIMENTO PARA DETERMINAR LA DENSIDAD DE UNA SUSTANCIA DESCONOCIDA EN EL LABORATORIO ENCONTRANDO LOS SIGUIENTES VALORES (Picnómetro vacío 8,5g) (Picnómetro lleno 25g) (Capacidad Picnómetro 25mL) . CUAL ES LA DENSIDAD DE LA SOLUCIÓN
Answers
Answer:
0.66g/mL
Explanation:
La densidad es una propiedad de la materia definida como la masa de una sustancia en un determinado volumen.
En este problema, podemos hallar la densidad sabiendo que la diferencia de masas del pic vacío y el pic lleno es la masa de la solución y que el volumen que ocupa es de 25mL:
Masa solución:
25g - 8.5g = 16.5g
Así, la densidad será:
16.5g / 25mL =
0.66g/mL