Answer:
TTC-GGT-ACT-TGT I could be wrong because A could eather be considered a U or a T, but u could also use UUC-GGU-ACU-UGU
The ______ properties of a substance can be observed only when it undergoes a change to become an entirely different kind of substance with different properties.
Enter the answer
Answer:chemical
Explanation:
I need help with the question below:
[tex]PCl_5 = PCl_3+Cl_2 \\ [/tex]
Where PCl5 and PCl3 are gasses
In the above equation , Predict the effect of change in :
I. Temperature
ii. Pressure
iii. Removal of Chlorine
Answer:
1: As the temperature rises, the equilibrium moves towards the products
2: The higher the pressure, the higher the equilibrium goes to the reactants
3: By removing chlorine, the equilibrium moves towards the products
What type of reproduction requires uniform population.
Answer:
Asexual reproduction .
Explanation:
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent.
How many moles of sulfuric acid (H2SO4) are present in 500.0 mL of 0.15 M H2SO4 solution?
Answer:
Number of moles = 0.075 mol
Explanation:
Volume = 500.0 mL = 0.5 (Converting to L by dividing by 1000)
Molarity = 0.15 M
Number of moles = ?
The relationship between the quantities is given as;
Molarity = Number of moles / Volume
Number of moles = Molarity * Volume
Number of moles = 0.15 * 0.5
Number of moles = 0.075 mol
If you had a bottle that contained 5.69x1024 molecules of water, how many
moles of water does the bottle hold? Please show the solution :))
Why are all molecules not compounds?
Answer:
Explanation:
All compounds are molecules, but not all molecules are compounds. That is because a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule. However, all compounds are made up of two or more different types of atoms.
Answer:
the last one
Explanation:
Question 2 (5 points)
What is the rock cycle? Select the best two answers from the choices below.
a
b
A concept in geology that describes transitions and relationships among the three main rock types
A way to show how Earth's different spheres interact with one another
The primary indicator of climate change
A series of processes that create and transform the types of rocks in Earth's crust
Uc
Jd
Answer:
A. A concept in geology that describes transitions and relationships among the tree main rock types.
D. A series of processes that create and transform the types of rocks in the Earth’s crust.
Explanation:
A and D are the best two answers from the choices below because they both correctly describe the rock cycle.
The rock cycle which according to Wikipedia is a basic concept in geology that describes transitions through geologic time among the three main types of rock;
1. Sedimentary,
2. Metamorphic and
3. Igneous rocks
A rock cycle can take very long time. It could be thousands or millions of years
Give the electronic configuration of an atom of sulfur.
Answer:
1s² 2s² 2p⁶ 3s² 3p⁴
Explanation:
Looking at the periodic table, we see that sulfur (S) has an atomic number of 16, this means its electronic configuration would be:
1s² 2s² 2p⁶ 3s² 3p⁴We know the electronic configuration written above is correct because the sum of all the superscript numbers is 16 (2+2+6+3+4=16).
Briefly describe each of the suns layers. I’ll give brainless
Answer: The inner layers are the Core, Radiative Zone and Convection Zone.
The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona.
Nuclear fusion of hydrogen in the core of the Sun produces tremendous amounts of energy that radiate out from the Sun.
The corona is the outermost layer of the Sun, starting at about 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the corona is 500,000 K (900,000 degrees F, 500,000 degrees C) or more.
The chromosphere is a layer in the Sun between about 250 miles (400 km) and 1300 miles (2100 km) above the solar surface (the photosphere). The temperature in the chromosphere varies between about 4000 K at the bottom (the so-called temperature minimum) and 8000 K at the top (6700 and 14,000 degrees F, 3700 and 7700 degrees C), so in this layer (and higher layers) it actually gets hotter if you go further away from the Sun, unlike in the lower layers, where it gets hotter if you go closer to the center of the Sun.
The photosphere is the deepest layer of the Sun that we can observe directly. It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that. The temperature in the photosphere varies between about 6500 K at the bottom and 4000 K at the top (11,000 and 6700 degrees F, 6200 and 3700 degrees C)
(phew! There you go!)
Which method can be used to calculate the percentage composition of a
compound?
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
Which is true regarding the density of air?
what chemical is 2:8:6 in electrons?
Help please!! In this question x represents which element?
31
15 x
A. 31 gallium Ga
B. 15 phosphorus P
C. 46 palladium Pd
Answer: think It is A. 31 gallium Ga or C. 46 palladium Pd
Sorry for spamming but this is due tomorrow! Can someone help me please!!
Answer:
1. in the Northern Hemisphere the vernal equinox falls about March 20 or 21, as the Sun crosses the celestial equator going north. In the Southern Hemisphere the equinox occurs on September 22 or 23, when the Sun moves south across the celestial equator.
Explanation:
Hope this helps ^^
1. identify a metal that matches each of the following descriptions. There may be more than one possible metal.
a Reacts slowly with cold water to form a hydroxide.
b Does not react with oxygen when heated.
c Reacts slowly with dilute acid.
d Reacts very vigorously in cold water to form hydroxide.
Answer:
I don't think there is any metal matches with this condition
How many moles are in 1.2 x 10^24 atoms of Y
Answer: We know that, 1 mole of any substance contain 6.022 X 10^23 atoms/molecules. Thus, 2.14 moles are present in 1.29x10^24 hydrogen atoms in HF.
Explanation:
divide it by avogadro's constant
that is 6.02 × 10²³
1.2 × 10²⁴ / 6.02 × 10²³
= 2 mol
Helpp plzz..10pointss
can someone help me ????
Answer:
B) Lithium
C) Barium
F) Potassium
Explanation:
All of the above are Inorganic Compounds.
Answer:
[tex]\boxed {\boxed {\sf Cobalt, Iron, and \ Copper}}[/tex]
Explanation:
The Stock System states that In a chemical formula or equation, some metals need a roman numeral after their symbol. If a metal has multiple oxidation states, it needs a roman numeral.
Use the Periodic Table to see the oxidation states for each metal.
Cobalt (Co): +3, +2 Lithium (Li): +1 Barium (Ba): +2 Iron (Fe): +3, +2 Copper (Cu): +2, +1 Potassium (K): +1We can see that cobalt, iron, and copper have more than one oxidation state, so they would require a roman numeral.
Equimolar solutions of the following were prepared in water separately. Which one of the solution will record the highest pH?
o CaCl2
SrCl 2
Ba(NO 2 )2
MgCl2
Answer:
Ba(NO2)2
Explanation:
Anything that contains calcium comes from a strong acid. Nitrous oxide (NO2) is a weak acid, therefore the salt it makes is less acidic than the rest --> the highest pH :)
Radioactive decay occurs when the ____ decays
Answer:
nucleus i think
Explanation:
the action force
According to Newton's third law of motion, a reaction force between two objects is
but in the opposite direction.
equal to
greater than
less than
Answer:
equal to - it's opposite but equal energy is the third law
Can someone help with this question I will big BRAINLEST quick thank you
Answer:
Charle's Law ... V ∝ f(T); Pressure and Mass remain constant
Explanation:
Charle's Law is one of the empirical gas laws relating the effect of temperature on volume of a gas while pressure and mass (moles) of substance remain constant. Basically, Charle's Law states that the change in volume associated with a confined mass or gas is directly proportional to the applied temperature.
For a directly proportional relationship between Volume (V) and Temperature (T) the empirical formula is written V ∝ T. This is then set in equation form by including a 'proportionality constant' giving V = k·T. In applications, problems generally provide 'initial' Temperature (T₁) and Volume (V₁) along with a final Temperature (T₂) or final Volume (V₂) and asked to calculate the unknown variable. The Charle's Law relationship detailing this is derived as follows:
V = k·T => k = V/T
The k-value is constant for both the initial and final conditions such that...
k₁ = k₂ => V₁/T₁ = V₂/T₂
Example: Assume a gas volume of 25 liters at 25°C, what would be the gas volume if cooled to 0°C?
Set-up a data table
V₁ = 25L & V₂ = ?
T₁ = 25°C & T₂ = 0°C => these values need to be converted to Kelvin Temps so as to avoid division by '0'. So...
T₁ = (25 + 273)K = 298K & T₂ = (0 + 273)K = 273K
Substituting into V₁/T₁ = V₂/T₂ and solving for V₂ provides the new volume.
25L/298K = V₂/273K => V₂ = (25L)(273K)/(298K) = 22.9L ≅ 23L (2 sig. figs.)
Generally, to check work, examine the change in volume relative to the change in temperature. For a direct proportionality a decrease in temperature as in the example would give a decrease in volume consistent with Charle's Law. Note that 273K/298K times 25L gives a smaller resulting volume value. If one applies '298K/273K' times the 25L, a larger value would result and is inconsistent with Charle's Law.
Explain the flexibility and the flow characteristics of water
Explanation:
Flow-duration data are daily mean flow values measured over a specified time interval that have been exceeded various percentages of the specified time interval.
Water is a very flexible material. It can flow in many different directions and shapes. This flexibility makes it great for many different purposes, such as drinking, washing, and irrigation. Water is considered to be a flexible substance because it can change its shape according to space.
What are the characteristics of water?Water is a liquid at standard temperature and pressure (25 degrees Celsius and 1 atm, for liquids).
Water is is tasteless and odorless.
Water is transparent in the visible part of the electromagnetic spectrum.
Water can act as either an acid or a base.
Water is a universal solvent, dissolving many substances found in nature.
Water is the most abundant compound on Earth’s surface. In nature, water exists in the liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at 0 degrees Celsius and 1 atm of pressure. At room temperature (approximately 25 degrees Celsius), it is a tasteless, odorless, and colorless liquid. Many substances dissolve in water, and it is commonly referred to as the universal solvent.
Therefore, Water is a very flexible material. It can flow in many different directions and shapes. This flexibility makes it great for many different purposes, such as drinking, washing, and irrigation. Water is considered to be a flexible substance because it can change its shape according to space.
Learn more about water, here:
https://brainly.com/question/28465561
#SPJ2
Magnesium hydroxide is added to a solution of hydrochloric acid. A reaction occurs and magnesium chloride and water are formed. Testing the _______ would show that a reaction has occurred.
Answer:Magnesium (Mg) is a - reactant
Hydrogen (H2) is a - product
magnesium chloride (MgCI2) is a - product
hydrochloric acid (HCI) is a - reactant
Explanation: It’s in my notes
Position A B C
Pe
Ke
Me
Un compuesto contiene un peso de 40% de carbono, 6.7% de hidrógeno y 53.3% de oxígeno una muestra de 0.10 moles de este compuesto pesa 6.0g la formula molecular del compuesto es
Answer:
[tex]C_2H_4O_2[/tex]
Explanation:
¡Hola!
En este caso, dado que conocemos la composición porcentual del compuesto, es posible primero obtener la formula empírica al asumir que dichos porcentajes son gramos, que se vuelven moles con las masas atómicas de carbono, hidrógeno y oxígeno respectivamente:
[tex]n_C=40gC*\frac{1molC}{12.01 gC}=3.33molC \\\\n_H=6.7gH*\frac{1molH}{1.01gC}=6.6molH\\\\n_O=53.3gO*\frac{1molO}{16.00gO}=3.33molO[/tex]
De este modo, ahora obtenemos las relaciones molares entre ellos, con el fin de obtener los subíndices en la fórmula empírica:
[tex]C:\frac{3.33}{3.33}=1\\\\ H:\frac{6.6}{3.33}=2\\\\O:\frac{3.33}{3.33}=1[/tex]
Por consiguiente, la fórmula empírica es:
[tex]CH_2O[/tex]
Finalmente, dado que la masa molar del compuesto es 6.0/0.10=60g/mol (dada la masa y las moles), es posible notar que como la masa molar de la fórmula empírica es 30; esta es dos veces la molecular, por lo que esta ultima resulta:
[tex]C_2H_4O_2[/tex]
¡Saludos!
Explain the electrolysis of acidified water
Answer:
yqaeh
Explanation:
Electrolysis of acidified water
Water is a poor conductor of electricity, but it does contain some hydrogen ions , H +, and hydroxide ions, OH -. These ions are formed when a small proportion of water molecules naturally dissociate . ... H + ions are attracted to the cathode , gain electrons and form hydrogen gas.
Can i titrate a solution of unknown concentration with another solution of unknown concentration and still get a meaningful answer
Answer:
No, I don't think so at least
Explanation:
In chemistry, you do calculations to find the concentration of a solution with another solution of KNOWN concentration. Without concentrations of either solution, were would you get values from? Where would you start? :3
You can not titrate a solution of unknown concentration with another solution of unknown concentration and still get a meaningful answer.
Titration involves the standardization of unknown solution using a standard solution. By this definition, titration must involve a standard solution.
Since the two unknown solutions are not standardized, we can never get a meaningful answer because we can not be able to perform any calculation unless we have a standard solution.
Learn more: https://brainly.com/question/2728613
different between methane and ethane.
How much energy is released when 67.04g of phosphorous is reacted with 10.20g of chlorine? ___ P + ___ Cl2 ___ PCl3 ΔH = -574 kJ
Answer:
26.78 kJ
Explanation:
To solve the problem, we have to first write the stoichiometric coefficients in the chemical equation:
2P + 3Cl₂ → 2PCl₃
With these coefficients, we have the same number of atoms of each chemical element on both sides: 2 atoms of P, 6 atoms of Cl.
According to the equation, 2 moles of phosphorous (P) react with 3 moles of chlorine (Cl₂), and 574 kJ of energy are released. We have to figure out which is the limiting reactant. For this, we convert the mass into moles by using the molar mass(MM):
MM(P) = 30.9 g/mol
67.04 g P/(30.9 g/mol) = 2.17 mol P
MM(Cl₂) = 35.4 g/mol x 2 = 70.8 g/mol
10.20 g Cl₂/(70.8 g/mol) = 0.14 mol Cl₂
Now, we multiply the actual moles of P (the amount we have for the reaction) by the stoichiometric ratio given by the chemical equation (3 mol Cl₂/2 mol P):
2.17 mol P x (3 mol Cl₂/2 mol P) = 3.25 mol Cl₂
To completely react 67.04 g P, we need 3.25 mol of Cl₂, and we have only 0.14 moles of Cl₂, so the limiting reactant is Cl₂.
Now, we use the limiting reactant to calculate the energy released from the reaction. The energy released per mole of Cl₂ is:
ΔH/(3 mol Cl₂) = -574 kJ/3 mol Cl₂= 191.3 kJ/mol Cl₂
Finally, we multiply the energy released per mole of Cl₂ by the number of moles of Cl₂ we have:
0.14 mol Cl₂ x 191.3 kJ/mol Cl₂ = 26.78 kJ