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3 years ago

Activation energy is (blank)

Chemistry

2 answers:

timurjin [86]3 years ago

7 0

B. The energy barrier between reactants and products

hope this helps!

sladkih [1.3K]3 years ago

6 0

Entropy and Free Energy Quiz

1) B

2) C

3) A

4) C

5) D

6) C

7) B

8) C

9) B

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Neon has 2 isotopes. Neon-20 has a mass of 19:992 amu and

Alenkinab [10]

Answer:

20.0928.

Explanation:

The average atomic mass is (90 * 19.992 + 10* 21) / 100

= 20.0928.

6 0

3 years ago

Which of the four cars had the least net force applied to it when it was launched down the ramp

castortr0y [4]

The least net force applied : Car 3(12 N)

<h3>Further explanation </h3>

Newton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object

∑F = m. a

Car 1 ⇒m=0.5 kg, a=36 m/s²

$\tt \sum F=0.5\times 36=18~N$

Car 2⇒m=0.8 kg, a=50 m/s²

$\tt \sum F=0.8\times 50=40~N$

Car 3⇒m=0.6, a=20 m/s²

$\tt \sum F=0.6\times 20=12~N$

Car 4⇒m=1, a=19~m/s²

$\tt \sum=1\times 19=19~N$

5 0

3 years ago

If the density of a liquid 102g/cm^3, how many milligrams will be in 63 mL of that liquid?

Ede4ka [16]

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

63 mL = 63 cm³

We have

mass = 102 × 63 = 6426

But 1 g = 1000 mg

6426 g = 6426000 mg

We have the final answer as

Hope this helps you

6 0

3 years ago

All of the following are true about the Earth’s inner core EXCEPT

Inessa05 [86]

<span>that it is cooler than the lithosphere.</span>

8 0

4 years ago

The temperature

solniwko [45]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\texttt {The reaction releases energy}$ $\texttt{( - or Exothermic)}$

____________________________________

$\large \tt Explanation \: :$

Temperature of thermometer increases during the reaction, that means it receives heat. henceforth we can conclude that energy is released during the reaction that cleary mean that it's an Exothermic Reaction.

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

7 0

2 years ago