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Gennadij [26K]
3 years ago
7

: are found around the atom & have a negative charge (-)

Chemistry
1 answer:
slava [35]3 years ago
4 0

Explanation:

electrons surrounds the necleus. Electrons have a negative charge. Protrons has positive

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How is the water in hydrothermal vents heated
yarga [219]
By hot springs, fumaroles and geysers.
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Which statement best explains why the virus that causes dog flu does not infect humans? In other words, why is this type of flu
zalisa [80]

Answer:

I believe your answer is : <u>The dog flu virus interacts specifically with receptors on the surface of dog cells.</u>

Explanation:

I hope this helps you :)

Pls mark brainleist :P

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<em>Tori </em>

8 0
2 years ago
Susan was investigating which glue would make the strongest craft stick tower. She
Naddik [55]

Answer:

<u>glue that would make the strongest craft stick tower.</u>

Explanation:

<u>Independent variable: </u>In statistics and research methods, the term "independent variable" is determined as a variable that is being changed, controlled, or altered in an experiment or research by the researcher or the experimenter to see its effect on DV or dependent variable. However, it is said that independent variable directly effect the dependent variable.

6 0
3 years ago
A food processing plant discharges 40 cfs (cubic feet per second) of process water containing an ultimate BOD (L0) of 25 mg/L an
Feliz [49]

Answer:

The right solution according to the question is provided below.

Explanation:

According to the question,

(a)

The initial conditions will be:

DO = \frac{(40\times 1.8)+(260\times 7.6)}{40+260}

      = \frac{2048}{300}

      = 6.826 \ mg/L

The initial oxygen defict will be:

Do = 8.5-6.826

     = 1.674 \ mg/L

The initial BOD will be:

Lo = \frac{(40\times 25)+(260\times 3.6)}{40+260}

    = \frac{1936}{300}

    = 6.453 \ mg/L

(b)

The time reach minimum DO:

tc = \frac{1}{(kr-kd)} ln{(\frac{0.76}{0.61} )[1-\frac{1.674(0.76-0.61)}{0.61\times 6.453} ]}

   = \frac{1}{0.15}\times ln \ 1.158

By putting the values of log, we get

   = 0.973 \ days

The distance to reach minimum DO will be:

Xc = \frac{1.1\times 3600\times 24}{5280}\times 0.973 \ days

    = 18\times 0.973

    = 17.5 \ miles

8 0
3 years ago
How many amu are there in 8.3g?
jasenka [17]

Answer:

4.998 × 10²⁴ amu

Explanation:

Given data:

Mass of substance = 8.3 g

Atomic mass unit = ?

Solution:

The mass of one mole of substance is equal the gram per mole of that substance.

atomic mass unit = g/mol

For 8.3 g:

8.3 × 6.022×10²³

4.998 × 10²⁴ amu

The number 6.022 × 10²³ is called Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

4 0
3 years ago
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