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2 years ago

11

Explain why the temperature goes up as the atoms move faster.

1 answer:

andrew-mc [135]2 years ago

3 0

Place the palm of your hands together and slowly rub them. You will not notice much of a temperature change. As you move your hands back-and-forth against each other at a more rapid pace you will notice the more friction you place on your hands the more the temperature increases. It’s also like Starting a fire with sticks using friction.

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Calculate the energy (in kJ) required to heat 10.1 g of liquid water from 55 oC to 100 oC and change it to steam at 100 oC. The

Maksim231197 [3]

Answer:

$\large\boxed{\large\boxed{24.6kJ}}$

Explanation:

<u>1. Energy to heat the liquid water from 55ºC to 100ºC</u>

$Q=m\times C\times \Delta T$

m = 10.1g

C = 4.18g/JºC

ΔT = 100ºC - 55ºC = 45ºC

$Q=10.1g\times 4.18J/g\ºC\times 45\ºC=1,899.81J$

<u>2. Energy to change the liquid to steam at 100ºC</u>

$L=\lambda \times n$

λ = 40.6kJ/mol

n = 10.1g / 18.015g/mol = 0.5606mol

$L=40.6kJ/mol\times 0.5604mol=22.76214kJ=22,762.14J$

<u>3. Total energy</u>

$1,899.81J+22,762.14J=24,661.95J\approx24,662J\approx24.6kJ$

7 0

3 years ago

Write a net ionic equation to show that hydroiodic acid, hi, behaves as an acid in water.

OlgaM077 [116]

Answer:

HI(aq) + H₂O(ℓ) ⟶ H₃O⁺(aq) + I⁻(aq)

Explanation:

The HI donates a proton to the water, converting it to a hydronium ion

HI(aq) + H₂O(ℓ) ⟶ H₃O⁺(aq) + I⁻(aq)

Thus, the HI is behaving like a Brønsted acid.

3 0

3 years ago

Read 2 more answers

Hello can you help???

MrRissso [65]

64: C
65: D because weathering is defined as rock being eroded/changed
hope i could help

6 0

3 years ago

Read 2 more answers

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici

arlik [135]

The given reaction is:

C4H10 + O2 → CO2 + H2O

The above equation is not balanced due to the unequal distribution of atoms on either side of equation

# atoms Reactants # atoms products

C = 4 C = 1

H = 10 H = 2

O = 2 O = 3

In order to balance it, multiply C4H10 by 2, O2 by 13, CO2 by 8 and H2O by 10 to get:

2C4H10 + 13 O2 → 8CO2 + 10H2O

7 0

3 years ago

Name the method that used to separated <br><br> amino acids from fruit juice solution

Ket [755]

Using the method chromatography

8 0

3 years ago