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prisoha [69]
3 years ago
7

Which phrase best describes earths atmosphere

Chemistry
1 answer:
aniked [119]3 years ago
6 0

Answer:

b

Explanation:

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Selective breeding happens?
inysia [295]

Selective breeding, also known as artificial selection, is a process used by humans to develop new organisms with desirable characteristics. Breeders select two parents that have beneficial phenotypic traits to reproduce, yielding offspring with those desired traits.

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_____ might be able to detect tumors based on its use of X-rays and ability to produce cross-sectional images of the brain.
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Answer: CAT (computerized axial tomography) scan

Explanation:

Computerized Axial Tomography (CAT) scan is an X-ray examination in which a computer generates images showing cross-section views of a patient's internal parts (brain, blood vessels and etc.)

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Calculate the H3O+ concentration and then pH in a 0.100 M HC2H3O2 solution that is
Lana71 [14]

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5 0
3 years ago
True or false, the melting point of gold is more than 1,000°c
Ivahew [28]

Answer:

Explanation:

true it is 1064 c

8 0
3 years ago
Read 2 more answers
A gas sample has an original volume of 760 ml when collected at 700 mm and 40oC. If a change is made in the gas temperature whic
alexandr1967 [171]

Answer:

235k

Explanation:

To solve this problem, we will use the general gas equation.

In its simplest form, the general gas equation can be represented as follows:

P1V1/T1 = P2V2/T2

P1 = 700mmHg

V1 = 760ml

T1 = 40 degrees Celsius = 40 + 273.15 = 313.15K ( conversion into standard temperature unit)

P2 = 1.25 atm

We have to covert this into the same unit as the first pressure.

760mmHg = 1atm

x mmHg = 1.25 atm

x = 1.25 * 760 = 950mmHg

V2 = 420ml

T2 = ?

Now, rearranging the equation will yield:

T2 = P2V2T1/P1V1

T2 = 950 * 420 * 313.5/700 * 760

T2 = 235.125K or -38.025 degrees celcius

6 0
3 years ago
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