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
Ksivusya [100]
2 years ago
9

A typical lead acid storage battery like the one found in your car is 12 V and is rated at 70 amp-hr (70 amp of current drawn fo

r 1 hour). Volts x Amps gives you Watts.
So the energy stored in the fully charged battery is 840 Watt-hours (Wh). Remember that a kWh = 3600 kJ.

If a Snicker's bar contains 250 Cal and 1 Cal = 4.184 kJ, how many Snicker's bars worth of energy is stored in your battery?

a. Fewer than 5

b. 5-20

c. 20-50

d. 50-100

e. More than 100
Chemistry
1 answer:
xeze [42]2 years ago
3 0

Answer:

Almost 3 snicker's bar will contain the worth of energy stored in the battery which makes option A correct (Fewer than 5)

Explanation:

Step 1

The energy stored in a charged battery is 840 Watt- hours

Recall from the question that 1 KWh = 3600 KJ

So how many Kilo-joules will be in 840 Watt- hours?

I will convert 840 Watt- hours to KWh = 840 / 1000

                                                              = 0.840 KWh

Since I KWh gives 3600 KJ

then, 0.840 KWh will give x

                                          x = 3024 KJ

3024 KJ of energy is stored in the battery

Step 2

A snicker bar contains 250 cal and 1 cal = 4.184 KJ

Convert 250 cal to KJ?

250 cal = 1046 KJ

Each snicker bar contains 1046 KJ

To calculate how many snicker's bar worth energy stored in the battery will be (y) ?

y = 3024 / 1046

y = 2.9 snicker's bar approximately 3

The correct option is Fewer than 5

You might be interested in
Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 4.79 kg .
Kazeer [188]
M = 4.79 kg = 4790 g
d = 7.86 g/cm3
density = mass/volume
v = m/d
v = 4790/7.86
v = 609.4 cm3
1 cm3 = 10^-2 dL

v = 609.4 x 0.01 = 6.09 dL
5 0
2 years ago
What happens to an oxidizing agent during a redox reaction?
Gnoma [55]

Answer:

An oxidizing agent, or oxidant, gains electrons and is reduced in a chemical reaction. ... A reducing agent is oxidized, because it loses electrons in the redox reaction.

Explanation:

An oxidizing agent, or oxidant, gains electrons and is reduced in a chemical reaction. ... A reducing agent is oxidized, because it loses electrons in the redox reaction.

4 0
3 years ago
How many atoms altogether make up one molecule of glucose ​
lilavasa [31]

Answer:

24 atoms makes altogether a molecule of glucose

7 0
3 years ago
Determine the rate of a reaction that follows the rate law rate = k a m b i where
ikadub [295]
(missing part of your question):
when we have K = 1 x 10^-2 and [A] = 2 M & [B] = 3M & m= 2 & i = 1
So when the rate = K[A]^m [B]^i
and when we have m + i = 3 so the order of this reaction is 3 So the unit of K is L^2.mol^-2S^-1
So by substitution:
∴ the rate = (1x 10 ^-2 L^-2.mol^-2S^-1)*(2 mol.L^-1)^2*(3mol.L^-1)
                 = 0.12 mol.L^-1.S^-1
6 0
3 years ago
The precision of a measuring instrument is based on the fineness of its scale subdivisions.
Liono4ka [1.6K]
The answer is True . The precision of a measuring is based on the fitness of its scale subdivisions
3 0
3 years ago
Read 2 more answers
Other questions:
  • If I fill a tall glass with water and then transfer the water to a shorter glass, it appears there is more water. Is there more
    8·1 answer
  • Haw does an atom change if all of it’s electrons removed
    6·1 answer
  • Given the balanced equation 4al s 3o2 g which type of chemical reaction is shown
    7·1 answer
  • If there's a jar that contains helium gas . What would happen if the lid of the jar was removed ?
    15·1 answer
  • What is the total mass (amu) of carbon in each of the following molecules?
    6·1 answer
  • A molecule of aluminum fluoride has one aluminum atom. How many fluorine atoms are present?
    9·2 answers
  • Which of the following is a compound? <br> a. air <br> b. soda <br> c. sterling silver <br> d. water
    6·1 answer
  • A compounds empirical formula is CH2. If the formula mass is 28 g/mol, what is the molecular formula
    14·1 answer
  • SCIENCE ANSWER ASAP PLEASE!!
    15·1 answer
  • Am I right? I don’t know u really suck at this
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!