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
AnnZ [28]
3 years ago
10

the white powder is added to the clear liquid. what event is occurring and is it a physical or chemical change?

Chemistry
2 answers:
alexdok [17]3 years ago
7 0
I would say chemical but I’m not 100% sure might wanna get a second opinion
Delvig [45]3 years ago
5 0

Answer:

The answer to your question is:

Explanation:

What event is occuring?

The white powder is fizzing in contact with the clear liquid.

Chemical change or physical change?

It is a chemical change because of the bubbles we conclude that there is a reaction. All reactions are chemical reactions.

You might be interested in
Suppose that you place exactly 100 bacteria into a flask containing nutrients for the bacteria and that you find the following d
tresset_1 [31]

Answer:

The order of the production of bacteria is 1.

12,787 bacteria will be present after 112 min.

0.04331 min^{-1} is the rate constant for the process.

Explanation:

Rate of formation of bacteria when there 100 bacteria: R

Rate of formation of bacteria when there 200 bacteria: R' =2R

Rate of formation of bacteria is directly proportional to the number of bacteria:

\frac{R}{R'}=\frac{k[200]^x}{k[400]^x}

\frac{R}{2R}=(\frac{200}{400})^x

x = 1

The order of the production of bacteria is 1.

The half life of the process = t_{1/2}=16 minutes

Rate constant of the process =  k

For first order process k is only dependent on half life:

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{16 min}=0.04331 min^{-1}

For the first order process the increment numbers is given ;

N=N_o\times e^{kt}

Where:

N_o= Initial population

N = Population after time t.

We have ;

N_o=100

t = 112 minutes

N=100\times e^{0.04331 min^{-1}\times 112 min}

N = 12,786.82\approx 12,787

12,787 bacteria will be present after 112 min.

0.04331 min^{-1} is the rate constant for the process.

5 0
3 years ago
What mass of carbon dioxide is produced upon the complete combustion of 26.5 L of propane (the approximate contents of one 5-gal
svet-max [94.6K]

Answer:

mCO2= 49.6932 kgCO2

Explanation:

Hello! Let's solve this!

First we propose the balanced equation C3H8 + 5O2 ---> 3CO2 + 4H2O

We see that each mole of C3H8 (propane) we get 3 moles of CO2

From the propane volume we can obtain the grams of propane used.

molpropane = 26.5L * (1000mL / 1L) * (0.621g / 1mL) * (1mol / 44g) = 374.01mol propane

mCO2 = 374.01molC3H8 * (3molCO2 / 1molC3H8) * (44gCO2 / 1molCO2) = 49369.32g * (1kg / 1000g) = 49.6932 kgCO2

mCO2= 49.6932 kgCO2

6 0
3 years ago
10) One mole of a diatomic ideal gas is initially at a temperature of 127 °C and
Vladimir79 [104]
Ok hold on one second
6 0
3 years ago
Identify the parts of the telescope.
Alona [7]
Eyepiece, finder-scope, optical tube, aperture, focuser, and mount
6 0
3 years ago
Read 2 more answers
How do I answer It ??
IgorC [24]

Recibí tus puntos, lo siento mucho por esto, pero, adiós perra

5 0
3 years ago
Other questions:
  • Why and how are acids and bases important?
    6·1 answer
  • The jovian planets contain large abundances of hydrogen and helium because
    12·1 answer
  • What is typically displayed on the y-axis of a solubility curve?
    8·1 answer
  • Calculate the mass percent of a solution that is prepared by adding 68.1 g of NaOH to 341 g of H20.
    7·1 answer
  • According to Hund's rule, if three electrons are available to fill a set of p orbitals, how will the electrons be arranged? *
    7·1 answer
  • ____________ or _____________ serve as nutrients for plants. <br>please please help meee​
    5·2 answers
  • If there are 1.55 x 1024 molecules of hydrogen peroxide (H2O2), what is the mass of the<br>sample? ​
    15·1 answer
  • What is the acceleration of 1 m/s?
    13·2 answers
  • Assume that your electrical power company gets its energy from a hydroelectric dam. Outline all of the energy changes that occur
    10·2 answers
  • Your bus is traveling 80 km/hr on a class trip to a museum that is 240 kilometers from your school. How long will it take to get
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!