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
likoan [24]
2 years ago
12

Help pls do the last two all work and last two questions

Chemistry
1 answer:
andrew11 [14]2 years ago
8 0

d1 = 15 miles

t1 = 1 hour

d2 = 25 miles

t2 = 2 hours

d = 15 + 25 = 40 miles

t = 1 + 2 = 3 hours

avg. \: speed \:  =  \:  \frac{total \: distance}{total \: time}

avg. \: speed \:  =  \frac{40}{3}

avg. \: speed \:  = 13.33mi \: hr ^{ - 1}

You might be interested in
Please help I need a answer to both
irga5000 [103]

Hi , I’m really sorry because I just have the first question... so here it is :

So it is 0.52 mol .

Have a nice day .

3 0
2 years ago
What is the volume of ammonia produced at 243 K at a pressure of 1.38 atm by the unbalanced reaction on the left if 5740 moles o
Neporo4naja [7]

Answer:

49671 L is the produced volume of ammonia

Explanation:

We think the reaction of ammonia 's production:

N₂(g) + 3H₂(g)  → 2NH₃ (g)

We have the moles of each reactant so let's determine the limiting reactant:

Ratio is 1:3. 1 mol of nitrogen reacts with 3 moles of H₂

Then, 1720 moles of N₂ will react with (1720 .3) /1 = 5160 moles of H₂

We have 5740 moles of hydrogen, so we have enough hydrogen. This is the excess reagent, so the limiting is the N₂

1 mol of N₂ can produce 2 moles of ammonia

Therefore 1720 moles of N₂ will produce (1720 . 2) /1 = 3440 moles of NH₃

We apply now, the Ideal Gases Law → P . V = n . R .T

V = (n . R . T) /P → V = (3440 mol . 0.082 L.atm/mol.K . 243K) / 1.38 atm

V = 49671 L

We confirm that the nitrogen was the limiting reactant

3 moles of H₂ need 1 mol of nitrogen to react

Therefore, 5740 moles of H₂ will react with (5740 . 1) /3 = 1913 moles of N₂

It was ok to say, that N₂ was the limiting reactant because we need 1913 moles in the reaction, and we only have 1720 moles

6 0
3 years ago
Please help<br> It’s super quick
UkoKoshka [18]

Answer:

1. a

Explanation:

2. c

7 0
3 years ago
Read 2 more answers
Modern oil tankers weigh over a half-million tons and have lengths of up to one-fourth miles. Such massive ships require a dista
uranmaximum [27]

Answer:

Acceleration = (change in speed) / (time for the change)

Change in speed= (0 - 26 km/hr) = -26 km/hr

(-26 km/hr) x (1,000 m/km) x (1 hr / 3,600 sec) = -7.222 m/sec

Average acceleration = (-7.222 m/s) / (22 min x 60sec/min) = -0.00547 m/sec²

Average speed during the stopping maneuver =

              (1/2) (start speed + end speed) = 13 km/hr = 3.6111 m/sec

Explanation:

4 0
3 years ago
A balanced chemical equation must have the same number of which of these on both sides of the equation?
andrew11 [14]
A balanced equation must have the same number of atoms on the both sides of equation.
4 0
2 years ago
Other questions:
  • The volume of a fixed amount of gas is double and the absolute temperature os doubled according to the ideas gas law how has the
    9·1 answer
  • A solution of HNO 3 HNO3 is standardized by reaction with pure sodium carbonate. 2 H + + Na 2 CO 3 ⟶ 2 Na + + H 2 O + CO 2 2H++N
    14·1 answer
  • What is the balanced equation when aluminum reacts with copper (ii) sulfate? i don't know how to do this
    13·1 answer
  • Boron trifluoride gas is collected at in an evacuated flask with a measured volume of . When all the gas has been collected, the
    12·1 answer
  • What is the volume in milliliter(ml) of 250 cm ^3 beaker
    7·2 answers
  • 1. What is the reactant in alcoholic and lactic-acid fermentation?
    5·1 answer
  • What is S for silicon tetrachloride, SiCl4
    8·1 answer
  • What is the formula for barium nitrate ?
    5·1 answer
  • The number of carbon atoms in 45.21g C
    8·1 answer
  • Currently, the primary source of sulfur dioxide emissions into the atmosphere is Group of answer choices coal burning power plan
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!