Answer:
The answer is "Option B"
Explanation:
Formula:
Na atoms= Na atoms moles \times NA
[tex]= \frac{mass}{Na \ Molar\ mass} \times 6.022 \times 10^{23}\\\\= \frac{9.2}{23} \times 6.022 \times 10^{23}\\\\=0.2875 \times 6.022 \times 10^{23}\\\\=2.4 \times 10^{23}\ atoms \\\\[/tex]
I don't know how to get the volume and it is 10 point removed for it wrong so can someone help me
The mass of the sun is about 1.98 x 10^30 kilograms. The mass of the earth is 5.97x 10^24 kilograms. The mass of the sun is how many times greater than the mass of
the earth?
Answer:
Explanation:
The mass of the sun is about 1.98 x 10^30 kilograms. The mass of the earth is 5.97x 10^24 kilograms.
1.98 x 10^30 / 5.97x 10^24 = 331658 times greater
Answer:
Explanation:
The mass of the sun / the mass of the earth
= 1.98 x 10^30 / 5.97x 10^24
= 3.32 x 10^5 times greater
i need help with this pls
I know it’s E and A
Explanation: did you count it’s exactly 28, also the electrons are not visible.
Ps: I’m in 5th grade, what grade is this, if my suggestion was correct then holy crackers.
ALEX RODE HIS BIKE
60 km in 4 Hours. How FAST WAS HE GOING
Answer:
15 km/hour
Explanation:
You need to find how fast he was going per hour.
Answer: 15
Divide. 60 ÷ 4
This gives us 15. So, Alex was going 15 mph
PS.
13. Calculate the number of representative particles of each substance.
a. 11.5 mol Ag
c. 0.150 mol NaCl
b. 18.0 mol H2O
d. 1.35 x 10-2 mol CH4
Help please I’m confused
Answer:1 answer number 1
Explanation:
A gas has a pressure of 1.00 atm at 25 degrees Celsius. What is the pressure of the gas at 323 degrees Celsius.
Please help thanks.
Answer:
The pressure of the gas at 323 degrees Celsius is 2 atm.
Explanation:
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
Gay-Lussac's law can be expressed mathematically as follows:
[tex]\frac{P}{T} =k[/tex]
Where P = pressure, T = temperature, K = Constant
Having two different states, an initial state 1 and a final state 2, it is satisfied:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case:
P1= 1 atmT1= 25 C= 298 K (being 0 C= 273 K)P2= ?T2= 323 C= 596 KReplacing:
[tex]\frac{1 atm}{298 K} =\frac{P2}{596 K}[/tex]
Solving:
[tex]P2=\frac{1 atm}{298 K}*596 K[/tex]
P2= 2 atm
The pressure of the gas at 323 degrees Celsius is 2 atm.
How do rock transformations on Venus and Earth indicate the planetary similarities between the two planets?
Answer:
Both the Earth and Venus show the appearance of igneous rocks due to the cooling of the magma.
Explanation:
As we know, ignea rock is the first step in the transformation of rocks. This rock is formed by the overflow of terrestrial magma which, upon cooling, turns into ignea rock, which will undergo metamorphism and transform into metamorphic rock, which will continue to undergo metamorphosis until it becomes the other rocks that complete the rock cycle. This is a terrestrial process that can be found on Venus, which also presents the cooling of magma in the formation of ignea rock, which will undergo metamorphism, transforming into other rocks, the way it occurs on Earth.
If 4.04g of h2 gas react with oxygen gas to create 36.36g of water, how many grams of oxygen reacted?
Answer:
gO₂ = 32.32 g
Explanation:
In this case, let's write the general equation:
2H₂ + O₂ -------> 2H₂O
In this case, we can use the 1° law, which is mass conservation. If the product has 36.36 g of water, then in the reactants we should have the same 36.36 g.
According to this, we already have 4.04 of hydrogen, then the remaining to reach the 36.36 g would be:
gO₂ = 36.36 - 4.04
gO₂ = 32.32 gHope this helps
Cuando se trata Ca3P2 con agua, los productos son Ca(OH)2 y PH3. Calcular el peso máximo obtenido al reaccionar 2 g de Ca3P2 con 1 g de H2O.
Answer:
0.629 gramos de PH3 es la máxima de cantidad que puede ser producida.
Explanation:
¡Hola!
En este caso, dado que tenemos la siguiente reacción química, la cual se puede balancear directamente:
[tex]Ca_3P_2+6H_2O\rightarrow 3Ca(OH)_2+2PH_3[/tex]
Podemos calcular la masa máxima de cualquier producto, digamos PH3, al comparar la masa de este, que 2 g the Ca3P2 y 1 g de H2O producen por separado y de acuerdo a la estequiometría:
[tex]2gCa_3P_2 *\frac{1molCa_3P_2 }{182.18gCa_3P_2 }*\frac{2molPH_3}{1molCa_3P_2 } *\frac{34gPH_3}{1molPH_3 } =0.747gPH_3\\\\1gH_2O *\frac{1molH_2O }{18.02gH_2O}*\frac{2molPH_3}{6molH_2O} *\frac{34gPH_3}{1molPH_3 } =0.629gPH_3[/tex]
De este modo, infermos que solamente 0.629 gramos the PH3 pueden ser obtenidos al ser el agua el reactivo límite.
¡Saludos!
Sample A has a mass of 40g and a volume of 10cm^3. Sample B has a volume of 15cm^3 and a mass of 45g. Which sample has a greater density? Show your work.
The Answer Is Sample A
Density -
[tex]density = \frac{mass}{volume} [/tex]
Input The Formula For Both Equations To Find Density.
Sample A -
[tex]d = \frac{40}{10} [/tex]
[tex]d = 4[/tex]
Sample B -
[tex]d = \frac{45}{15} [/tex]
[tex]d = 3[/tex]
Para que sirven los modelos atómicos
Answer:
mi no speak espanol
Explanation:
If energy was added to solid, what state would it change to
A. Super solid
B. Plasma
C. Liquid
Answer:
Explanation:
The answer is C Liquid
What is a precipitation
reaction?
Answer:
A precipitation reaction is one in which substances in solution are mixed and an insoluble product is made. The insoluble product is called a precipitate and can be seen as a solid forming in the reaction mixture.
What happen if your Adrenal Glands become overprotective of underproductive?
What happen if your Adrenal Glands become overprotective of underproductive?
Answer: if your adrenals becomes overproductive it will lead to a health issue known as CUSHING'S SYNDROME while when they become underproductive it will lead to a health condition known as ADDISON'S DISEASE.
Explanation:
The adrenal glands are divided into two embryologically and functionally distinct parts: the adrenal cortex and adrenal medulla.
The adrenal cortex is part of the hypothalamic - pituitary - adrenal endocrine system. Morphologically, the adult adrenal cortex consists of three layers which include:
--> The outer thin layer: this is also called zona glomerulosa. It secrets only aldosterone.
--> The inner two layers: these comprises of the zona fasciculata and zona reticularis. They both form a functional unit and secrete most of the adrenocortical hormones.
The adrenal medulla is the inner part of the adrenal gland which secrets the adrenaline and noradrenaline hormones.thry take part in sympathetic nervous system.
When the adrenal glands become a OVERPRODUCTIVE, the adrenal cortex is highly affected. This may occur due to hyperstimulation of the adrenal gland by adrenocorticotrophic hormone,either from the pituitary gland or from an ectopic source or due to largely autonomous secretion by an adrenal tumor such as an adenoma or carcinoma. The increased endogenous cortisol production leads to a disorder known as CUSHING'S SYNDROME. The clinical and metabolic features include obesity, hyperglycaemia and hypertension.
Also when the adrenal glands become UNDERPRODUCTIVE, a health condition known as ADDISON'S DISEASE may occur. This is cause any the bilateral destruction of all zones of the adrenal cortex, usually as the result of an autoimmune process or mycotic infections. The resulting decrease in cortisol production may lead to clinical features such as hypotension, hypoglycemia, nausea and vomiting.
You mix two amino acids together: glu and ser. If they reacted, how many different dipeptides would you expect to get? List them.
I'm really struggling with amino acids, so any help is appreciated! I won't be clicking any links, though.
Answer:
Answers 1. An amide linkage between the carboxyl group of one amino acid and the amine group of the other amino acid. 2. An ester is a compound formed from the reaction of a carboxylic acid and an alcohol. ( I apologise, I cant figure out number 3.. )
The geometry of a ______________ makes it a very stable shape.
Answer:
triangles
Explanation:
*
14. An AREA which drains into a common river system.
watershed
tributary
drainage divide
riparian zone
PLEASE HELP HELP ME. THIS IS DUE TODAY PLEASE
Answer:
C
Explanation:
cause i'm smart
Answer:
D
Explanation:
Because it says tree roots breaking rocks into smaller rocks.
Hope this helped!
calculate the molar mass for BaSO4
Answer:
233.38 g/mol
Explanation:
you find the molar mass of each element and then add them up.
A greater force is required to move an object with a larger mass than one with a smaller
mass.
Answer:
Explanation:
what do u need to know
if there is a bottle of grape juice with 20% juice and there is 1000mL of total drink, how many mL of water
is in the bottle?
Answer:
760ml of water
Explanation:
Answer: 800mL
Explanation:
20% of 1000mL is 200. 1000mL - 200mL is 800mL
* Describe the structure and behavior of the inner Earth
Answer:
The interior of the Earth, like that of the other terrestrial planets, is chemically divided into layers. The Earth has an outer silicate solid crust, a highly viscous mantle, a liquid outer core that is much less viscous than the mantle, and a solid inner core.
Which of the following could be the hypothesis supported by an investigation that demonstrates the law of conservation of mass in relation to chemical reactions?
A. If the reaction obeys the law of conservation of mass, then mass will be the same before and after the reaction.
B. If the reaction obeys the law of conservation of mass, then mass will increase after the reaction.
C. If the reaction obeys the law of conservation of mass, then mass will be different before and after the reaction.
D. If the reaction obeys the law of conservation of mass, then mass will decrease after the reaction.
According to the law of conservation of mass, mass is neither created nor destroyed in a chemical reaction. If the reaction obeys the law of conservation of mass, the mass before and after the reaction will be the same.
What does the law of conservation of mass?Any element's mass at the start of a reaction will equal its mass at the end of the reaction. Accounting for all reactants and products in a chemical reaction results in the same total mass at any point in time in any closed system.
When coal, for example, is burned, the carbon atom transforms into carbon dioxide. The carbon atom undergoes transformation from solid to gas, but its mass remains constant.
According to the law of conservation of mass, the amount of mass that enters a chemical reaction in the form of reactants must equal the amount of mass that exits the reaction process in the form of products. This is only possible in a closed system. For example, if 2g of reactant A reacts with 32g of reactant B, the mass of the product AB formed is 34g.
To learn more about Law of conservation of mass, refer to:
brainly.com/question/24783543
#SPJ2
SOMEONE HELP PLEASE !!
Which is not an electrolyte
1. Ionic salt
2. Acid
3. Base
4. Water
PLEASE HELP ME
salt is not because it gets u dehydrated
Alcohol and water are placed into closed-end manometer, in order to measure the vapor pressure of each of the 2 liquids at 25oC. the figure represents the observation few hours after placing the liquids.
a) Calculate the Vapor pressure of alcohol P vapor (alcohol) in mmHg and atm.
(choose 2 answers!)
1) Vapor pressure in mmHg = 100mm Hg
2) Vapor pressure in mmHg = 50mm HG
3) Vapor pressure in atm = 0.13 atm
4) Vapor pressure in atm = 0.26 atm
Answer:
3) Vapor pressure in atm = 0.13 atm
Explanation:
which of the following elements has the highest electronegativity?
A) oxygen
B) nitrogen
C) carbon
D) boron
Answer:
option d) is the correct answer
A birthday balloon is filled with 6.4 L of Helium. The pressure changes to 0.87 atm and the balloon expands to occupy a volume of 20.5 L. What was the initial pressure exerted on the balloon in psi?
PLS HELP WITH WORK!!
Answer:
3.97 psiExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
We have
[tex]P_2 = \frac{6.4 \times 0.87}{20.5} = \frac{5.568}{20.5} \\ = 0.2716.... \\ \\ = 0.27 \: \: \: atm[/tex]
But
1 atm = 14.7 psi
Then 0.27 atm =
[tex] \frac{14.7 \times 0.27}{1} = 3.969 \\ [/tex]
We have the final answer as
3.97 psiHope this helps you
Answer:
3.97 psi
Explanation:
¿A que se refiere la amplitud de una onda sinusoidal?
How many liters (L) of water need to be added to prepare 4800mL of 0.5M NaCl from a 3M NaCl stock solution? (Use the formula M1V1=M2V2)
Answer: There is 0.8 liters (L) of water required to be added to prepare 4800mL of 0.5M NaCl from a 3M NaCl stock solution.
Explanation:
Given: [tex]M_{1}[/tex] = 0.5 M
[tex]V_{1}[/tex] = 4800 mL
Convert mL into L as follows.
[tex]1 mL = 0.001 L\\4800 mL = 4800 mL \times \frac{0.001 L}{1 mL}\\= 4.8 L[/tex]
[tex]M_{2}[/tex] = 3 M
Formula used to calculate the volume of water required as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]
Substitute the values into above formula.
[tex]M_{1}V_{1} = M_{2}V_{2}\\0.5 M \times 4.8 L = 3 M \times V_{2}\\V_{2} = \frac{0.5 M \times 4.8 L}{3 M}\\= 0.8 L[/tex]
Thus, we can conclude that 0.8 liters (L) of water need to be added to prepare 4800mL of 0.5M NaCl from a 3M NaCl stock solution.
