1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Artemon [7]
3 years ago
6

Sulfuric acid dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. Thi

s solute-solvent interaction ____________ and makes the beaker warm.
A) absorbs energy from the surroundings
B) absorbs energy into the surroundings
C) releases energy into the surroundings
D) releases energy from the surroundings
Chemistry
2 answers:
gizmo_the_mogwai [7]3 years ago
3 0

The answer is D

Hope this help;)

kvv77 [185]3 years ago
3 0

Answer:

its c

Explanation:

Sulfuric acid dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. This solute-solvent interaction releases energy into the surroundings and makes the beaker warm.

You might be interested in
TILEF
torisob [31]

Answer:

Na

Explanation:

sodium has mass number 23 and atomic number 11 so number of protons =number of electrons =atomic number which is 11 and number of neutrons=mass number-number of protons =23-11=12

7 0
2 years ago
A student titrates a 10.00mL sample of an HCl solution, using 0.359 M solution of NaOH. She finds that 24.75mL of sodium hydroxi
salantis [7]
HCl and NaOH react in a 1:1 ratio, meaning that 1 H+ from HCl will react with 1 OH- from NaOH. Knowing this, and that molarity is mol/liter, all we need to do is use what we have available. First we must find the mols of HCl in our solution, so we set up the following equation in the following steps:
1. 24.75mL x (0.359mol NaOH / 1000mL) = 8.885 x 10^-3mol NaOH
   This is done in order to find the mols of NaOH to convert to mols of HCl.
2. 8.885x10^-3mol NaOH x (1 mol HCl/1mol NaOH) = 8.885 x 10^-3mol HCl
   Here we just used the mols of NaOH we found to convert to mols of HCl using the 1:1 ratio described earlier.

From the mols of HCl all we have to do is divide by the amount of liters in the solution. Since we started with 10mL HCl and added 24.75mL NaOH, the total volume is 34.75mL = 0.03475L. So:
8.885 x 10^-3mol HCl/0.03475L = 2.557 x 10^-1M HCl
However, this is the molarity of the HCl and NaOH solution, not the original HCl solution. Using the dilution equation M1V1=M2V2, we can solve for the original molarity.
M1 = the molarity of our HCl in the titrated mixture (2.557 x 10^-1M HCl)
V1 = the total volume that our mixture has (34.75mL = 0.03475L)
M2 = what we're trying to find
V2 = the amount of the original HCl that we had (10mL = 0.010L)
Simply solving for M2 gives us:
M2 = (M1V1) / V2 or:
M2=((2.557 x 10^-1) x 0.03475L) / 0.010L = 8.89 x 10^-1M HCl. That is your answer.
6 0
3 years ago
The metal element cesium has one electron in its outer orbit. Will cesium atoms form positively charged or negatively charged io
r-ruslan [8.4K]

Answer:

Caesium atoms will form positively charged ions.

Explanation:

Due to them having one electron in their outer orbit, it is very likely that they will give that electron away to form an octet and become stable. Hence, since they lose an electron, they lose a negative charge, and in comparison to their former non-ion self, they have gained a positive charge.

Hence, they will form positively charged ions.

Hope this helped!

8 0
3 years ago
Hich formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)? (5 points)
mina [271]

Answer:

which formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)?

» <u>d.2 x molar mass of H + 2 x molar mass of O</u>

Explanation:

Since we've two hydrogen atoms and two oxygen atoms, we multiply each mass by 2

= (2 \times hydrogen) + (2 \times oxygen) \\  = (2 \times 1) + (2 \times 16) \\  = 2 + 32 \\  = 34 \: g

Which of the following statements best defines the actual yield of a reaction?

»<u> </u><u>d.The ratio of measured yield over stoichiometric yield</u>

4 0
2 years ago
Read 2 more answers
The half-life for the reaction below was determined to be 2.14 × 10^4 s at 800 K. The value of the half-life is independent of t
lord [1]

Answer:

0.0907 s

Explanation:

This an Arrhenius equation problem, so you relate the half-life with the kinetic constant of the reaction in order to calcule the same thermodynamic parameters at another temperature.

To calcule the kinetic constant of the reaction you need to know the order of it, look closely to the sentence "The value of the half-life is independent of the inital concentration of N2O present." the only order independent from the initial concentration of reagents is first order, so you can calculate K at 800 K, using:

k(800 K)=\frac{ln(2)}{t_{1/2}}= \frac{ln(2)}{2.14 * 10^{4} s}}=3.239*10^{-5}s^{-1}}

Now you can use Arrhenius equation to calcule K at 1150.66 K

ln(\frac{k1}{k2} )=-\frac{E_{a} }{R}(\frac{1}{T2} - \frac{1}{T1}  )

k2= k1*exp(-\frac{E_{a} }{R}(\frac{1}{T2} - \frac{1}{T1}  ))=3.239*10^{-5}s^{-1}*exp(-\frac{270 000 J/mol }{8.314 J/mol *k }(\frac{1}{1150.66K} - \frac{1}{800K}  ))=7.639 s^{-1}

Then calculate the new half-life:

t_{1/2} =\frac{ln(2)}{7.639s^{-1}}=0.0907 s

3 0
3 years ago
Other questions:
  • While doing a distillation, Farha heats the mixture too fast, and the temperature rises too quickly. If the mixture is composed
    15·2 answers
  • Calculate the mass of 5.3 moles of chloric acid (HClO3). Please Answer ASAP!!!! :((((((\
    7·1 answer
  • Which ion has the largest radius?<br>1) Br-<br>2) Cl-<br>3) F-<br>4) I-​
    12·1 answer
  • How would the density of water change if you measured out 1/4 cup of water instead of 1/2 cup water? Explain your answer in comp
    10·2 answers
  • Lily is doing a science experiment with a substance in a sealed jar. At first, the substance's molecules are moving around each
    9·1 answer
  • Según las propiedades de una sustancia: punto de fusión (PF): 0° C, punto de ebullición (PE) de 28° C. ¿Cual es el estado de agr
    13·1 answer
  • Helppppp meeeeeeeeeeeeeeeeeeeeeeeeeeeee ill mark brainlist
    7·2 answers
  • will mark brainlest 1) Now that you have studied the facts about the Severn River, you are ready to make a decision. What questi
    12·1 answer
  • A compound is analyzed and found to be 50% sulfur and 50% oxygen. If the total amount of the sulfur oxide is 12.5 g, how many gr
    9·1 answer
  • Name the following ionic compounds that contain transition metals. Use the periodic table provided
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!