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
k0ka [10]
3 years ago
10

PLEASE ANSWER WITHIN 5-10 MINUTES

Chemistry
2 answers:
True [87]3 years ago
6 0

I'll explain.

So to find the distance you have to subtract 121 by 88 and when you do you get 33.

The time it takes is 30 min then we convert it since we are looking for the mph ( miles per hour) and we would get 0.5.


And the last step is dividing the distance by the time.

33 / 0.5 = 66

That how you get your answer.


<u><em>Your Welcome</em></u>

Dmitriy789 [7]3 years ago
5 0
Sara's mom, travels at a rate of 66 mph.
You might be interested in
In a sample containing a mixture of only these gases at exactly one atmosphere pressure, the partial pressures of carbon dioxide
Black_prince [1.1K]

Answer:

Explanation:

The pressure of a gaseous mixture is equal to the sum of the partial pressures of the individual gases:

ΣP_g_a_s = P_1+P_2+P_3+...+P_n

The prompt is trying to confuse you, but it actually tells us the pressure of the mixture to be 1 atm, but this can be converted to torr. Furthermore, we are informed only three gases are in the mixture: diatomic nitrogen, diatomic oxygen, and carbon dioxide:

P_g_a_s=1 \ atm = 760 \ torr= P_N_2+P_O_2+P_C_O_2\\760 \ torr = 582.008 \ torr + P_O_2 \ + 0.285 \ torr

Solve for Po2:

P_o_2=(760-582.008-0.285) \ torr = 177.707 \ torr

Thus, the partial pressure of diatomic oxygen is 177.707 torr.

<u><em>If you liked this solution, hit Thanks or give a Rating!</em></u>

4 0
3 years ago
Explain how there can be so many different kinds of suntances in the world
Volgvan
Because people make those substance out of other things
6 0
3 years ago
Read 2 more answers
Consider the following reaction.Cr2O3(s) + 3CCl4(l) 2CrCl3(s) + 3COCl2(g). When the green solid is mixed with the colorless liq
Elena L [17]

Answer:

The answer to your question is: letter B

Explanation:

Reaction

                 Cr2O3(s)   +   3CCl4(l)   ⇒  2CrCl3(s)  +   3COCl2(g)

From the information given and the reaction, we can conclude that:

Green solid = Cr2O3 (s)     "s" means solid

Colorless liquid = CCl4 (l)    "l" means liquid   and is the other reactant

Purple solid = CrCl3(s)        CrCl3 is purple and "s" solid

Then, as a green specks remains it means that the excess reactant is Cr2O3, so, CCl4 is the limiting reactant.

6 0
3 years ago
Lanthanum-138 has a half-life of 105 billion years. after 525 billion years, how much of a 240 g sample of this radioisotope wil
Reika [66]

The amount of the 240 g sample of the radioisotope that will remain after 525 billion years is 7.5 g

<h3>How to the number of half-lives that has elapsed</h3>
  • Half-life (t½) = 105 billion years
  • Time (t) = 525 billion years
  • Number of half-lives (n) = ?

n = t / t½

n = 525 / 105

n = 5

<h3>How to determine the amount remaining</h3>
  • Original amount (N₀) = 240 g
  • Number of half-lives (n) = 5
  • Amount remaining (N) = ?

N = N₀ / 2ⁿ

N = 240 / 2⁵

N = 240 / 32

N = 7.5 g

Learn more about half life:

brainly.com/question/26374513

#SPJ4

5 0
2 years ago
70<br><br> What is 27/100 plus 3/10 equals
Brut [27]

Answer:

that is my answer hope it helps you out

Explanation:

i got 1.40 for my answer

6 0
2 years ago
Other questions:
  • 23g of sodium reacted with 35.5g of chlorine. Calculate the mass of the sodium chloride compound formed.
    6·2 answers
  • While performing the Acid-catalyzed Hydrolysis of Epoxides experiment you used a solution containing 1.84 mL of cyclohexene oxid
    12·1 answer
  • Describe the possible components of a buffer solution. (select all that apply.)strong base and its conjugate acidweak base and i
    12·1 answer
  • A saturated solution of magnesium fluoride, MgF2, was prepared by dissolving solid MgF2 in water. The concentration of Mg2+ ion
    14·1 answer
  • Which of the following is an oxidation-reduction reaction?
    6·1 answer
  • Question 15 need this answered asap (chemistry)
    12·1 answer
  • Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) If you have 4 moles of zinc and 4 moles of hydrochloric acid, which of these would be the l
    15·1 answer
  • 7. Phosphorus 32 ( 32), a radioactive isotope of phosphorus, has a half-life of 14.2 days. a. If the amount of radioactivity of
    8·1 answer
  • Which is the main type of element found in the upper right part of the periodic table? O A. Metals B. Representative metals O C.
    9·1 answer
  • arrange these species by their ability to act as an oxidizing agent.you are currently in a ranking module. turn off browse mode
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!