0.00003 in scientific notation would be 3 × 10⁻⁵.
The scientific notation of a number is represented as a coefficient multiplied by 10 raised to an appropriate exponent. 0.00003 can be expressed in scientific notation as [tex]3\times 10 ^{-5}[/tex].
Scientific notation is a simple and standardised approach to express extremely big or extremely small numbers. Its foundation is the idea that a number can be expressed as a coefficient times a power of 10. The exponent indicates how many places the decimal point must be moved to get the original value, while the coefficient is normally an integer between 1 and 10 (inclusive of 1 but exclusive of 10). To write 0.00003 in scientific notation, we need to move the decimal point five places to the right to make the coefficient between 1 and 10. 0.00003 can be expressed in scientific notation as [tex]3\times 10 ^{-5}[/tex].
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whoever helps me will get brainlist
Answer:
Show us the arrows, how are we suppose to answer?
Explanation:
How many milliliters of 4.00 M NaOH are required to exactly neutralize 50.0 milliliters of a 2.00 M solution of HNO3 ?
Answer: The volume of [tex]NaOH[/tex] required is 25.0 ml
Explanation:
According to the neutralization law,
[tex]n_1M_1V_1=n_2M_2V_2[/tex]
where,
[tex]n_1[/tex] = basicity [tex]HNO_3[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]HNO_3[/tex] solution = 2.00 M
[tex]V_1[/tex] = volume of [tex]HNO_3[/tex] solution = 50.0 ml
[tex]n_2[/tex] = acidity of [tex]NaOH[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]NaOH[/tex] solution = 4.00 M
[tex]V_1[/tex] = volume of [tex]NaOH[/tex] solution = ?
Putting in the values we get:
[tex]1\times 2.00\times 50.0=1\times 4.00\times V_2[/tex]
[tex]V_2=25.0ml[/tex]
Therefore, volume of [tex]NaOH[/tex] required is 25.0 ml
The volume of 4.00 M NaOH is required to exactly neutralize 50.0 ml of a solution of a 2.00 M solution of [tex]HNO_3[/tex] is 25.0 ml.
What is [tex]HNO_3[/tex]?[tex]HNO_3[/tex] is nitric acid also known as the spirit of niter. It is colorless in its original form but appears yellow-colored.
By the neutralization law
[tex]n_1M_1V_1 = n_2M_2V_2[/tex]
n1 = 1
M1 = 2.00
M2 = 4.00
V1 = 50.0 ml
n2 = NaOH = 1
Putting the value in the formula
[tex]1 \times 2.00 \times 5.00 ml = 1 \times 4.00 \times V_2\\\\V_2 = 25.0\; ml[/tex]
Thus, the volume of NaOH required is 25.0 ml.
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HI dissociates to form 12 and Hz: 2HI(g) → H2(g) + 12(9) If the concentration of Hl changes at a
rate of -0.45 mol L's? what is the rate of appearance of 12(g)?
Based on the rate of disappearance of HI, the rate of appearance of I₂ is 0.225 mol/L/s.
What is rate of reaction?
The rate of a reaction is the rate at which reactant molecules are converted to product or the rate at which product molecules are formed.
Rate of reaction = change in concentration of reactant or product/timeFrom the equation of the reaction, 2 moles of HI produces 1 mole of I₂.
The rate of disappearance of HI is -0.45 mol/L/s
The rate of appearance of I₂ will be 0.45/2 mol/L/s = 0.225 mol/L/s.
Therefore, the rate of appearance of I₂ is 0.225 mol/L/s.
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If the hydroxide ion concentration of a solution is 3.26 x 10-6 M, is it an acidic or a basic solution?
Answer: It is a basic solution with pH =8.51
Explanation:
We were given that hydroxide ion concentration [OH-] as 3.26 x 10-6 M
But We know thar
[OH-] [H+] = 1 × 10^-14
To get the Hydrogen ion [H+] concentration, we have that
[H+] = 1 × 10^-14 M/[OH-]
= 1 × 10^-14 M/3.26 x 10-6 M
= 3.067 x 10^-9 M
But, pH = - log [H+]
Therefore,
pH = - log (3.067 x 10^-9)
pH=8.51
when pH > 7, The solution is basic, therefore a solution with pH =8.51 is basic.
pls show your work will mark brainliest
Answer:
0.047 moles
Explanation:
From the question,
Applying
PV = nRT............. Equation 1
Where P = Pressure of CH₄ gas, V = Volume of CH₄ gas, n = number of moles of CH₄ gas, R = Molar gas constant.
make n the subject of the equation
n = PV/RT............. Equation 2
Given: P = 660 torr = (660×0.00131579) atm = 0.868 atm, V = 1300 mL = (1300/1000) L = 1.3 L, T = 20 °C = (20+273) K = 293 K
Constant: R = 0.082 atm.dm³/K.mol
Substitute these values into equation 2
n = (0.868×1.3)/(0.082×293)
n = 1.1284/24.026
n = 0.047 mole
A ballon is filled with 1.22 L of gas at 286 K is heated until the volume is 2.86 L while the pressure remains constant. What is the temperature of the gas in kelvin?
Answer:
670.45 K
Explanation:
Given that,
Initial volume, V₁ = 1.22 L
Initial temperature, T₁ = 286 K
Final volume, V₂ = 2.86 L
We need to find the new temperature of the gas. The relation between the volume and the temperature is given by :
[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{2.86\times 286}{1.22}\\\\T_2=670.45\ K[/tex]
So, the new temperature of the gas is equal to 670.45 K.
Pt4 science......
Select correct answer ♡ !
Toma en cuenta los textos para responder estas interrogantes: ¿Consideramos que la aplicación de las medidas de seguridad depende de las características de tu entorno?
Answer:
Si.
Explicación:
Sí, la aplicación de medidas de seguridad depende de las características de su entorno porque el entorno nos brinda para elegir las medidas de seguridad. Existen diferentes instrumentos utilizados para la seguridad de diferentes entornos. Algunas medidas de seguridad se aplican en un entorno mientras que el otro se aplica a otro entorno. Por ejemplo, el vallado es una medida de seguridad que se puede aplicar en el terreno pero no en el agua o cualquier zona fangosa, por lo que podemos decir que las características físicas deciden qué medida de seguridad se debe instalar en el entorno.
If 20% of the nucleotides in a DNA molecule are adenine, what percentage of each of the other three bases would be found in this molecule and explain the answer
This is known as _______________________ rules
please i need help thank you
3. Move the slider on the burette to the top to add about 25 mL of NaOH to the flask. What
happens, and what does this tell you about the pH of the flask?
Page Break
LED
Answer:
When you move the burette slider to the top of a flask and add about 25 mL of NaOH to the flask, you will cause a concentration of OH- molecules. This will make the solution become a basic solution and make the litmus paper blue.
Explanation:
After reading your question, we can see that you are carrying out a test to discover the nature of the pH of a solution. This type of test uses litmus paper, which is an indicator of the presence of acids and bases, being able to determine the pH of a solution. This paper is soaked in organic ink and when placed in an acidic solution, it is red in color. However, when placed in a basic solution it has a blue color.
An acidic solution is one that has a high concentration of H+ atoms and has the ability to donate electrons. The basic solution, on the other hand, has a high concentration of OH- and has the capacity to receive electrons.
When you move the burette slider to the top of a flask and add about 25 mL of NaOH to the flask, you will cause a concentration of OH- molecules. This will make the solution become a basic solution and make the litmus paper blue, that is, the solution has the basic pH.
A student prepares four different aqueous NaCl solutions according to the table. Which solution will have the highest molarity?
Answer:
what did you end up guessing
Explanation:
What is the job or function of cell walls in plant cellls
Answer:
The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall.
Explanation:
ion
Explain what helps convert non-rich oxygen blood cells back to oxygen rich cells?
Answer:
As blood travels through the body, oxygen is used up, and the blood becomes oxygen poor. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.
Explanation:
Can you identify what object is being represented by the model on the right?
basketball
cell
Earth
The answer is. B. Cell
Answer:
Cell lol
Explanation:
answer B
Which pair of elements is in the same period? (Check ALL that apply) *
17 points
G
F
D
R
J
Answer:
D and R are in the same period
Explanation:
remember groups are vertical and periods are horizontal!
When 28242 J are transferred to water sample, its temperature increases 18⁰C to 63⁰C. Determine the mass of the water sample.
Answer:
149.79
Explanation:
Formula
Joules = m * c * delta (t)
Givens
J = 28242
m = ?
c = 4.19
Δt = 63 - 18 = 45
Solution
28242 = m * 4.19 * 45
28242 = m * 188.55
m = 28242 / 188.55
m = 149.79
describe what happens when atoms release light?
Answer:
hi
Explanation:
Light is the result of electrons moving between defined energy levels in an atom, called shells.
Describe how the freeze-thaw cycle of ice will change the shape of this rock over time. PLSSSS HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!✋
Freeze-Thaw Weathering
This action can widen the cracks in the rock, and when the temperature rises above freezing, the ice thaws, allowing the water to seep further into the cracks. As this process of freezing and thawing happens repeatedly, the rock begins to weaken and eventually breaks apart into angular fragments.
Answer:
Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. ... Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.
Explanation:
hope this helps
If 34.2 g of NaOH are dissolved in water to make a 750 mL solution, what is the molarity of the solution?
Answer:
1.14 M
Explanation:
First divide the mass of NaOH by the molar mass of NaOH. Then divide by the volume to get molarity.
34.2 g / 39.997 g/mol = 0.855 mol NaOH
0.855 mol NaOH / 0.750 L = 1.14 M NaOH
CAN SOMEONE HELP ASAP!!
Answer:
1.melting
2.freezing
3.
Explanation:
That's all I got sorry
Answer:
Look at the picture
Explanation:
If Lead (II) nitrate reacted with iron (III) acetate what would the balanced formula be?
Answer:
Explanation:
3Pb(ii)(NO3)2 + 2Fe(iii) ( C2H3O2 )3 ===> 3Pb( C2H3O2)2 + 2Fe(NO3)3
I know you have likely been given this as a homework assignment, but in real life I doubt you would be able to see any reaction taking place. The products are likely both soluble and both ionize, so I don't think you will get any kind of reaction taking place.
The equation however is balanced.
Which of the following statements correctly describes what happens in all chemical reactions?
Answer:
Bonds between atoms are broken/ or new bonds are formed
Explanation:
Due to chemical changes.
HELP a #QUEEN out pls??
Type the correct answer in each box.
Balance the equation.
_____SiO2 + ______CaC2 → _____Si + _______CaO + _____CO2
The coefficients, in order of the blanks, are 5, 2, 5, 2, 4.
Select the correct answer.
Which statement best describes how chemical equations demonstrate conservation of mass?
A.
The number of reactants is the same as the number of products.
B.
The compounds are the same on each side of the reaction.
C.
The number of atoms of each element is the same on each side of the equation.
D.
The state of matter is the same on each side of the equation.
"C" is correct.
The Law of Conservation of Mass states that matter can be neither created nor destroyed. This is evident in chemical equations as you will always start and end with the same amount of atoms of every element. They are all still there; they have just been rearranged.
Answer: C) The number of atoms of each element is the same on each side of the equation.
Explanation: Mass cannot be created nor destroyed.
Someone help me out with this brain pop ⚠️
what type of wave moves the particles parallel to the motion of the wave
a.electromagnetic
b. longitudinal
c. transverse
d.water
Answer is in a ph[tex]^{}[/tex]oto. I can't attach it he[tex]^{}[/tex]re, but I uploaded it to a fi[tex]^{}[/tex]le hosting. link below! Good Luck!
bit.[tex]^{}[/tex]ly/3a8Nt8n
Sodium chlorate is used to produce yellow fireworks. Heating sodium chlorate creates oxygen and sodium chloride. How many moles of sodium chlorate is needed to produce 5.70 moles of oxygen?
https://www.geneva304.org/Downloads/ch%209%20key6.pd
this is what i found add an "f" at the end and search
Write two paragraphs about what would happen if your whole body was put in a low pressure environment ?
Answer:
Reduced air pressure also has a serious effect on the human body. Reduced air pressure means that there is less oxygen available to the body. For lungs to inflate, the air pressure in your lungs has to be less than the air outside the lungs. This is because air moves from high-pressure areas to low-pressure areas.
Explanation:
Reduced air pressure also has a serious effect on the human body. Reduced air pressure means that there is less oxygen available to the body. For lungs to inflate, the air pressure in your lungs has to be less than the air outside the lungs. This is because air moves from high-pressure areas to low-pressure areas.
10 How does no-till farming help the environment?
A It decreases soil erosion.
C It increases fertilizer use.
B It increases soil removal.
D It decreases crop yield.
Answer: Answer is A it will decrease soil erosion
Explanation:it just will trust me
Answer:
A.
Explanation:
the soil will not loosen when u till it
What are the mole ratios of the following chemical equation: C3H8 + 5O2 --> 3CO2 + 4H2O?
Answer:Redox and combustion.
Explanation:
C3H8) reacts with oxygen in the air, so C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g) Classification: Redox and combustion.