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tankabanditka [31]
3 years ago
10

DNA samples should not be stored where?

Chemistry
2 answers:
garri49 [273]3 years ago
8 0

Answer:

in the brain

Explanation:

Anton [14]3 years ago
6 0

Answer:

in the brain

Explanation:

it is bad and will cause harm

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The density of benzene is 0.879g/mL. The volume (with 1 decimal) of 131.9g sample of benzene is how many mL?
timurjin [86]

Answer:

150.1 mL

Explanation:

Step 1: Given data

  • Density of benzene (ρ): 0.879 g/mL
  • Mass of the sample of benzene (m): 131.9 g
  • Volume of the sample of benzene (V): ?

Step 2: Calculate the volume of the sample of benzene

Density is an intrinsic property. It is equal to the quotient between the mass and the volume of the sample of benzene.

ρ = m/V

V = m/ρ

V = 131.9 g/(0.879 g/mL)

V = 150.1 mL

5 0
3 years ago
How will an increase in wind speed affect soil erosion?
AnnyKZ [126]

Answer:

A. Soil erosion will increase.

7 0
3 years ago
A. If the mass of Hydrogen is 1 amu, what is the mass of Hydrogen in the reactant side of the equation above?
dimulka [17.4K]

Answer:

there are 4 hydrogen so

A.the mass of Hydrogen in the reactant side of the equation above is 1×4=4 amu.

B.the mass of Hydrogen on the product side of the equation above =1×4=4 amu.

<u>Note</u><u>:</u><u> </u><u>mass</u><u> </u><u>of</u><u> </u><u>reactant</u><u> </u><u>=</u><u>mass</u><u> </u><u>of</u><u> </u><u>product</u><u>.</u>

7 0
3 years ago
How many atoms are in pb (no3)2
Oduvanchick [21]
In pb (no3)2 there is:

Lead- 1 atom
Oxygen- 6 atoms
Nitrogen- 2

9 atoms in all
4 0
3 years ago
2.998x10^8 m/s is how many kilometers per hour
Alex

1.079 x 10⁹ km/h

<h3>Further explanation</h3>

2.998 x 10⁸ m/s has been known as the speed of light.

Let us convert the unit m/s to km/hour.

Change in unit length:

If 1 km = 1,000 cm, then \boxed{ \ 1 \ cm = 0.001 \ km \ } \rightarrow \boxed{ \ 1 \ cm = 10^{-3} \ km \ }

Change in unit time:

If \boxed{ \ 1 \ hour = 60 \ minutes = 3,600 \ seconds \ }, then \boxed{ \ 1 \ second = \frac{1}{3,600} \ hours \ }

The Process:

\boxed{ \ 2.998 \times 10^8 \ \frac{m}{s} \times \frac{10^{-3} \ km}{1 \ m} \times \frac{1 \ s}{\frac{1}{3,600} \ hours} \ }

\boxed{ \ 2.998 \times 10^8 \times 10^{-3} \ km \times \frac{3,600}{hours} \ }

\boxed{ \ 10,792.8 \10 \times 10^5 \ \frac{km}{hour} \ }

Remember, we must write the results in scientific notation, i.e.,

\boxed{\ a \times 10^b \ } \rightarrow \boxed{ \ 1 \leq a < 10 \ } \rightarrow \boxed{ \ b \ must \ be \ an \ integer \ }

Thus the result of unit conversion is

\boxed{ \ \boxed{ \ 2.998 \times 10^8 \ m/s \ } \rightarrow \boxed{ \ 1.079 \times 10^9 \ km/h} \ }

<h3>Learn more</h3>
  1. What unit conversion factor would you use in order to calculate its displacement in cubic-inches brainly.com/question/5009365
  2. Does Marcus pay tax? brainly.com/question/11018983
  3. Express your answer numerically in US dollars to three significant figures. brainly.com/question/3959122

Keywords: speed of light, convert, m/s to km/h, unit length, time, hours, minutes, second, scientific notation

5 0
3 years ago
Read 2 more answers
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