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ioda
2 years ago
9

1. The ocean is also known as Earth's _____. *

Chemistry
2 answers:
Ad libitum [116K]2 years ago
8 0
D. none off they above because the ocean isnt a cloud it doesn’t collect things and its not condensed
Karolina [17]2 years ago
4 0

Answer:

Earth is often called the ocean planet because it is 70% covered in water.

Explanation:

D.

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A copper ore containing 4.3 wt% water, 10.3 wt% CuSO, and 85.3 wt% rock is fed to a staged counter current extractor at a rate o
Serga [27]

Answer:

6 stages

Explanation:

Given:

Copper ore contains:

4.3 wt% water

10.3 wt% CuSO₄

85.3 wt% rock

Feed rate = 11.7 tons per hour

solution produced is to be 10 wt% copper sulfate

90 wt% water

Now,

The CuSO₄ supplied through the feed = 10.3 wt% CuSO₄ × Feed rate

= 0.103 × 11.7

= 1.2051 tons per hour

also,

At each stage 2 tons of solution is collected

therefore,

The CuSO₄ collected in each stage

= weight of solution × 10 wt% copper sulfate

= 2 tons per hour × 0.1

= 0.2 tons per hour

also,

98% of the CuSO₄ is to be recovered

thus,

the amount of CuSO₄ to be recovered

= 0.98 × CuSO₄ supplied through the feed

= 0.98 × 1.2051 tons per hour

= 1.180998

Therefore,

The number of stages required = \frac{\textup{amount of CuSO₄ to be recovered }}{\textup{CuSO₄ collected in each stage }}

= \frac{\textup{1.180998}}{\textup{0.2}}

= 5.90499 ≈ 6 stages

8 0
3 years ago
QUESTION 8
grin007 [14]

answer to Question will be 2 electron as it forms 2H+

5 0
2 years ago
Read 2 more answers
Identify at least three control variables that could be used with this investigation: What temperature allows for bacterial grow
Over [174]

Answer:

Time allowed for incubation, size of the dish, the amount of light, amount of agar, the type of agar…etc

Explanation:

6 0
3 years ago
Read 2 more answers
Someone please help me!!
sesenic [268]

Answer:

the 3rd one (0.01 cm the one selected already)

Explanation:

copper wire isn't excessively big, and it wraps around the pencil because its malleable. I think that the most accurate would be 0.01 cm

4 0
3 years ago
What is the density of lead (in g/cm^3 3 ) if a rectangular bar measuring 0.500 cm in height, 1.55 cm in width, and 25.00 cm in
Viktor [21]

Answer:

Density = 11.4 g/cm³

Explanation:

Given data:

Density of lead = ?

Height of lead bar = 0.500 cm

Width of lead bar = 1.55 cm

Length of lead bar = 25.00 cm

Mass of lead bar = 220.9 g

Solution:

Density = mass/ volume

Volume of bar = length × width × height

Volume of bar = 25.00 cm × 1.55 cm × 0.500 cm

Volume of bar = 19.4 cm³

Density of bar:

Density = 220.9 g/ 19.4 cm³

Density = 11.4 g/cm³

3 0
2 years ago
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