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ladessa [460]
3 years ago
15

Which letter? Thanks in advance!

Chemistry
1 answer:
Mashcka [7]3 years ago
7 0

Answer: b

Explanation:

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They are called spectator ions. 

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When an atom of lithium loses and electron, the atom becomes a
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A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree
Anuta_ua [19.1K]

Answer:

309.1K

Explanation:

Step 1: Convert the flown heat to Joule

We will use the relationship 1 kJ = 1,000 J.

69.0kJ \times \frac{1,000J}{1kJ} = 69.0 \times 10^{3} J

Step 2: Convert the mass of water to gram

We will use the relationship 1 kg = 1,000 g.

8.10 kg \times \frac{1,000g}{1kg} = 8.10 \times 10^{3} g

Step 3: Convert the initial temperature to Kelvin

We will use the following expression.

K = °C + 273.15 = 33.9°C + 273.15 = 307.1 K

Step 4: Calculate the final temperature

We will use the following expression.

Q = c \times m \times (T_f - T_i)

where,

  • Q: heat
  • c: specific heat capacity
  • m: mass
  • T f: final temperature
  • T i: initial temperature

T_f = \frac{Q}{c \times m} + T_i = \frac{69.0 \times 10^{3}J }{4.18J/g.K \times 8.10 \times 10^{3}g} + 307.1K = 309.1K

3 0
3 years ago
Which one is an accurate description of the process of erosion?
Mashutka [201]

(A).Moving bits of rock and soil across the Earth's surface by water, wind, or glaciers

Explanation:

Erosion is the removal of bits of rocks and soil across the earth surface by water, wind and glaciers.

It is often described as the gradual washing or removal of weathered materials from the earth surface.

Agents of erosion are wind, water and glacier.

  • After an earth material is disintegrated by weathering, erosion follows suit.
  • Weathering breaks down rocks into sediments and soils either mechanically or chemically .
  • The process of erosion removes these lose products of weathering and they can be transported.

Learn more:

Erosion brainly.com/question/2115729

#learnwithBrainly

4 0
3 years ago
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