Answer: The specific heat is the amount of heat per unit mass that is essential for raising the temperature of heat by one degree Celsius. Equation is the symbolic reaction of a chemical reaction in the form of symbols and formulas, where the reactant is written on the left side and the product is written on the right side.
We encounter a lot of things in our daily life that we love and also hate. What I have faced a lot is my nail tags that happens to me a lot and hurts too. And I love dipping biscuits in tea and that never happens at once because a single biscuit is too big for the cup. Hence, I have to break it and dip. Ugh
Following Rutherford, Niels Bohr developed an improved model of the atom in which the electrons moved around the nucleus in quantized energy shells. Which of the following phenomena could Bohr's model explain but Rutherford's model could not?
Group of answer choices:
spectral emission lines from hydrogen atoms
wave-particle duality of electrons
protons accounting for roughly half of an atom's mass
alpha particles passing through gold foil undeterred
Answer:
spectral emission lines from hydrogen atoms
Explanation:
Is N2 + H2 > NH3 balanced?
Answer:
yes
Explanation:
This can be fixed by multiplying the product contacting nitrogen by 2. o The new chemical equation is N2 +H2 →2 NH3 Reactants Products Nitrogen 2 2 Hydrogen 2 6 Since NH3 is multiplied by a coefficient of 2 there are now 2 nitrogens and 6 hydrogens. The 6 hydrogens come from the 2 multiplied by the subscript of 3.
Beth pulls a wagon up a hill in 40 seconds. Her friend Adeline pulls the same wagon up the same hill in 30 seconds. Which of the following statements is true?
A. Beth accomplished more work than Adeline.
B. Adeline accomplished more work than Beth.
C. Beth had a greater power output than Adeline.
D. Adeline had a greater power output than Beth.
Answer:
d
Explanation: because they did same thing on was just faster than other one
Answer:
The answer will be D
Explanation:
She boiled the ingredients as the recipe instructed. What kind of change is this?
A. Physical change
B. Chemical change
Answer:
a
Explanation:
If Maria winks exactly 5 times every minute while she is awake and she sleeps exactly 8 hours a day, how many times does Maria wink in a day?
The equilibrium constant, Kc, for the reaction H2 (g) + 2 (g) 2H (g) is 54 at 425 ºC. If the equilibrium mixture contains 0.030 M H and 0.015 M 2 , the equilibrium concentration of H2 is______.
Answer:
[H₂] = 0.0011M
Explanation:
Based on the chemical equation:
H₂(g) + I₂(g) ⇄ 2HI(g)
And Kc is defined as:
Kc = [HI]² / [H₂] [I₂]
Where Kc = 54
And [] represents equilibrium concentration of each compund.
Replacing:
54 = [0.030M]² / [H₂] [0.015]
[H₂] = [0.030M]² / 54* [0.015]
[H₂] = 0.0011M( i need help on this one )
The following statement is an example of Newton's Second Law“ that it is much easier to carry your backpack when it is empty rather than when it’s full of textbooks”.
True
False
The following statement is an example of Newton's Third Law“When you are standing in a subway train and the train suddenly stops but your body continues to move forward”
True
False
Answer:
1. False
2.True
Explanation:
Which mistake did Maria make on her diagram
Answer:
Explanation:here’s the diagramm somebody help
1. Which type of heat transfer does a fan give off? Explain why you think that way.
Answer:
Convection is a heat transfer mechanism where heat moves from one place to another through fluid currents. Forced convection is simply using this mechanism in a useful way to heat or cool a home efficiently, such as using a fan.
Explanation:
A 0.853-g of 90.0% lithium chlorate mixture decomposes with heat to give 313 ml of oxygen gas collected over water at 20 c and 762 mmHg .what is the percentage of LiCLO3 in the mixture?
Answer:
[tex]\%LiClO_3=90.4\%[/tex]
Explanation:
Hello!
In this case, since the undergoing chemical reaction is:
[tex]LiClO_4\rightarrow LiCl+\frac{3}{2} O_2[/tex]
It is widely known that when a gas given off from a reaction is collected over water, we can compute its pressure by minusing the total pressure 762 mmHg and the vapor pressure of water at the experiment's temperature (20 °C) in this case 17.5 mmHg as shown below:
[tex]p_{O_2}=762mmHg-17.5mmHg=744.5mmHg*\frac{1atm}{760mmHg}=0.980atm[/tex]
Next, by using the ideal gas equation we compute the yielded moles of oxygen considering the collected 313 mL (0.313 L):
[tex]n_{O_2}=\frac{PV}{RT}=\frac{0.980atm*0.313L}{0.082\frac{atm*L}{mol*K}*293.15K}\\\\ n_{O_2}=0.0128molO_2[/tex]
Now, via the 3/2:1 mole ratio between oxygen and lithium chlorate (molar mass = 90.39 g/mol), we compute the original mass of decomposed lithium chlorate as follows:
[tex]m_{LiClO_3}=0.0128molO_2*\frac{1molLiClO_3}{3/2molO_2}*\frac{90.39gLiClO_3}{1molLiClO_3} \\\\m_{LiClO_3}=0.771gLiClO_3[/tex]
Now, the percentage is computed as shown below:
[tex]\%LiClO_3=\frac{0.771g}{0.853g} *100\%\\\\\%LiClO_3=90.4\%[/tex]
Best regards!
Here is the actual question from before, I forgot to put the question in 0-0
Answer:
Evaluate \dfrac {9}m+4
m
9
+4start fraction, 9, divided by, m, end fraction, plus, 4 when m=3m=3m, equals, 3.
Explanation:
The net force on a vehicle that is accelerating at a rate of 1.15 m/s2
is 1,800 N.
What is the mass of the vehicle?
Answer:
1565.2 kgExplanation:
The mass of the vehicle can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]a = \frac{1800}{1.15} \\ = 1565.217...[/tex]
We have the final answer as
1565.2 kgHope this helps you
7. This part of the brain controls memory, and long term abuse of marijuana can permanently
damage it.
(5 Points)
Frontal Lobe
Cerebellum
Hippocampus
Amygdala
Answer:
Hippocampus
Explanation:
The main parts of the brain involved with memory are the amygdala, the hippocampus, the cerebellum, and the prefrontal cortex.
Memory impairment from marijuana use occurs because THC alters how the hippocampus, a brain area responsible for memory formation, processes information.
Please answer ...
P
L
E
A
A
E
Answer:
C
Explanation:
Option C: They are all matter, they have mass, take up space and are made of atoms
Mark me brainiestWhich type of chemical bond is formed by the attraction between positive ions and surrounding mobile electrons?
A) ionic
B) nonpolar covalent
C) metallic
D) polar covalent
Answer:
C metallic bond is the answer
How many moles are present in 2.3 x 1023 molecules of NH3?
Answer:
I don't know if this is helpful. I'm sorry if it is not.
What is the fancy name for the cell membrane?
Answer:
plasma membrane
Explanation:
what has a positive charge
Answer:
A proton carries a positive charge and an electron carries a negative charge
Explanation:
is this what u want???
PLEASE HELP ME!!
Identify which is the true statement about polar and nonpolar molecules. Explain why.
A. polar molecules always have nonpolar bonds.
B. Non polar molecules always have polar bonds.
C. Nonpolar molecules can have polar bonds.
D. Polar molecules never have polar bonds.
Write the symbol of each neutral element based
on its Noble Gas Shorthand configuration:
Answer:
1. Co
2. C
3. Ba
Explanation:
What are some foods that require dry ice
What element does the following orbital notation represent?
1s
2s
2p
3s
Зр
4s
3d
42/19K ——->0/-1e+a/bC
Answer:
?
Explanation:
What is the pH if 0.0256 g of Potassium Hydroxide are dissolved in enough water to make .212 liters of solution? (Hint: you are
solving for poH first and then finding pH)
pH= 11.332
Further explanationKOH⇒K⁺+OH⁻
KOH(MW=56,1056 g/mol)
mol KOH :
[tex]\tt \dfrac{0.0256}{56.1056}=4.56\times 10^{-4}[/tex]
molarity KOH :
[tex]\tt \dfrac{4.56\times 10^{-4}}{0.212}=2.15\times 10^{-3}[/tex]
[OH⁻]=[KOH]=2.15 x 10⁻³
pOH=-log[OH⁻]
[tex]\tt pOH=-log~2.15\times 10^{-3}\\\\pOH=3-log~2.15\\\\pOH=2.668[/tex]
pH+pOH=14
[tex]\tt pH=14-2.668=\boxed{\bold{11.332}}[/tex]
How many dots go around Rubidium in a Lewis Dot Structure?
Answer:
I believe it's one dot in an electron dot diagram (or rubidium)
Explanation:
I hope this helps
GIVING BRAINLEST TO WHOEVER HAS THE RIGHT ANSWER. Plz and Tysm
True or False: Temperature
and pressure increases as the depth increases inside the earth
1. True
2. False
Answer:
true
Explanation:
as you get closer to the center it gets hotter
Describe how the location along a specific latitude on Earth relates to the average high temperature. Explain your reasoning...?
In the formation of silicon carbide represented by the chemical equation sio2+3c-->sic+2co 8.0 moles of each reactant are available for the reactant.What is the limiting factor?
Answer:
7.3
Explanation:
SiO2 + 3C -> SiC +2CO
If 100 grams of C are to react completely, how many grams of SiO2 are needed?
Answer:
=242.47 g of HF
Explanation:
C.
If 150 grams of oxygen are produced, how many moles of sodium chlorate decomposed
Answer:
3.13 moles of sodium chlorate are decomposed.
Explanation:
Given data:
Mass of oxygen produced = 150 g
Number of moles of sodium chlorate decomposed = ?
Solution:
Chemical equation:
2NaClO₃ → 2NaCl + 3O₂
Number of moles of oxygen:
Number of moles = mass/molar mass
Number of moles = 150 g/ 32 g/mol
Number of moles = 4.7 mol
Now we will compare the moles of oxygen with sodium chlorate.
O₂ : NaClO₃
3 : 2
4.7 : 2/3×4.7 = 3.13 mol
3.13 moles of sodium chlorate are decomposed.
