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
telo118 [61]
2 years ago
15

How long will it take you to walk 12 km if your speed is 2.5 km/hr?

Chemistry
2 answers:
Alik [6]2 years ago
7 0

Explanation:  Walking for 30 minutes covers a distance of 2.0 to 2.5 km and burns about 125 calories

Alex2 years ago
4 0

Answer:

4.8 hours

Explanation:

12÷2.5= 4.8 hours

You might be interested in
Is 2OH−+Ca2+−>2Ca(OH)2 balanced
wariber [46]

Answer:

No.

Explanation:

No.  There is 1 atom of Ca on the left and 2 Ca's on the right  and 2 OH's on the left and 4 on the right.

The balanced equation is:

4OH-  +  2Ca2+ ---->  2Ca(OH)2.

3 0
2 years ago
Read 2 more answers
The lattice energy of a salt is related to the energy required to separate the ions. For which of the following pairs of ions is
kati45 [8]

Answer:

(A) Mg²⁺ and O²⁻

Explanation:

6 0
2 years ago
Use the van der waals equation to calculate the pressure exerted by 1.335 mol of cl2 in a volume of 4.920 l at a temperature of
nika2105 [10]
<span>Van der waal or ideal eqn is given by PV = NRT; P = NRT/ V. Where N = 1.335 is the number of moles. T = 272K is temperature. V = 4.920L is the volume. And R = 0.08205L. Substiting the values into the eqn; we have, P = (1.331* 0.08205 * 272)/ 4.920 = 29.7047/ 4.920 = 6.03atm.</span>
7 0
3 years ago
A 0.245-L flask contains 0.467 mol co2 at 159 °c. Calculate the pressure using the ideal gas law.
lubasha [3.4K]

Answer:

Pressure, P = 67.57 atm

Explanation:

<u>Given the following data;</u>

  • Volume = 0.245 L
  • Number of moles = 0.467 moles
  • Temperature = 159°C
  • Ideal gas constant, R = 0.08206 L·atm/mol·K

<u>Conversion:</u>

We would convert the value of the temperature in Celsius to Kelvin.

T = 273 + °C

T = 273 + 159

T = 432 Kelvin

To find the pressure of the gas, we would use the ideal gas law;

PV = nRT

Where;

  • P is the pressure.
  • V is the volume.
  • n is the number of moles of substance.
  • R is the ideal gas constant.
  • T is the temperature.

Making P the subject of formula, we have;

P = \frac {nRT}{V}

Substituting into the formula, we have;

P = \frac {0.467*0.08206*432}{0.245}

P = \frac {16.5551}{0.245}

<em>Pressure, P = 67.57 atm</em>

4 0
2 years ago
Animals inherit traits from their parents. They pass some of these same traits on to their children. Suppose a pair of animals h
Fantom [35]

Answer:

A. The children will be more likely to survive than if they did not have the trait.

Explanation:

Process of elimination

B. It will not affect the children.

Cannot be true, if it didn't impact the children then how would survival of the fittest work?

D. The children will be able to adapt if the environment changes.

That just... not how adapting works when it comes to evolution.

C. The children will be more likely to survive than their parents were

Everyone has the same trait, everyone is equal in that regard.

A. The children will be more likely to survive than if they did not have the trait.

"Suppose a pair of animals has a trait that helps them survive in their environment." The trait helps them survive. Not having the trait makes them less likely to survive. A is correct

8 0
2 years ago
Other questions:
  • What energy conversion occurs when a plant uses energy from the sun to make sugar stored in fruit?
    6·1 answer
  • The length of a desk is 3.5 feet. how many centimeters is the length
    11·2 answers
  • What colour is the flame
    15·1 answer
  • 13.50 grams of Pb(NO3)4 are dissolved in enough water to make 250 mL of solution. What is the molar its of the resulting solutio
    11·1 answer
  • Why do living things need water, food, and space
    15·2 answers
  • A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 1
    12·2 answers
  • Which element has a crystalline lattice through which electrons flow freely
    8·1 answer
  • Arrange the objects in order from least to greatest potential energy. Assume that gravity is constant. (Use PE = m × g × h.) Til
    14·2 answers
  • A solution is prepared by dissolving 51 g of salt in 340 g of
    10·1 answer
  • How many moles of oxygen are required to make 4 moles of water?​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!