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larisa86 [58]
3 years ago
9

The colour of RBC is Red .why?​

Chemistry
1 answer:
RoseWind [281]3 years ago
7 0

Answer: fat show the first half and a lot of people in a row in this rr

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Is hand washing a chemicals change or physicals change and why?
PolarNik [594]

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If you wash your hands with soap, the soap molecules act as a link between the water you're washing with and the oil on your skin.

Explanation:

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3 years ago
Read 2 more answers
Rebekah finds that a solution of sugar in water has a volume of 1. 32 fl. Oz. How should she report this amount using the metric
goldfiish [28.3K]

Rebekah reports the volume of sugar solution using metric system as 39.1 mL. Thus, option D is correct.

The metric system has been the measurement system introduced in 1790s. The system has mediated the units for the measurement of volume, mass, length.

The volume has been the space that has been occupied by matter. The volume can be denoted with SI unit L. However, the another accepted unit for volume has been mL.

Thus, the volume of sugar solution has been reported in mL.

The given sugar solution has volume of 1.32 fl. Oz

The volume in mL can be given as:

\rm 1\;fl\;Oz=29.6\;mL\\1.32\;fl\;Oz=1.32\;\times\;29.6\;mL\\1.32\;fl\;Oz=39.1\;mL

The volume of the sugar solution reported by Rebekah on the metric scale has been 39.1 mL. Thus, option D is correct.

For more information about the metric system, refer to the link:

brainly.com/question/25011390

4 0
3 years ago
When the air inside a hot air balloon is heated, it expands and takes up a larger volume. As a result, it floats higher into the
pav-90 [236]
I believe it becomes gasses the hotter it gets
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Fossils of the Dorudon, an aquatic mammal that lived over 40 million years ago, show a whale-like animal that had small, underde
irina [24]

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They prove that all animals evolved from a single ancestor

3 0
3 years ago
For each of the following amounts, calculate the mass
nalin [4]

The masses of the following amount of compound are as follows:

a. 2080.12 grams of barium iodide

b.1139.2 grams of sulphur dioxide

c. 96.25 grams of AspirinTM

d. 27.144 grams of magnesium nitrite

The molarity formula is represented as follows;

molarity = mass / molar mass

Recall we are ask to find the masses of the compounds. Therefore,

  • mass = molarity × molar mass

<h3>Mass of BaI₂</h3>

a 5.32 mol barium iodide, BaI₂

molarity = 5.32 mol

molar mass of  BaI₂ = 137 + 127(2) = 137 + 254 = 391 g/mol

mass = 5.32 × 391 = 2080.12 grams.

<h3>Mass of SO₂</h3>

b. ) 17.8 mol sulphur dioxide, SO₂

molarity = 17.8 mol

molar mass of SO₂  = 32 + 32 = 64 g /mol

mass = 17.8 × 64 = 1139.2 grams.

<h3>Mass of CHO₄</h3>

c. 1.25 mol AspirinTM, CHO₄

molarity = 1.25 mol

molar mass of  CHO₄ = 12 + 1 + 64 = 77 g / mol

mass = 1.25 × 77 = 96.25 grams

<h3>Mass of Mg(NO₂)₂</h3>

d. 0.234 mol magnesium nitrite, Mg(NO₂)₂

molarity = 0.234 mol

molar mass = 24 + 14(2) + 32(2) = 24 + 28 + 64 = 116 g/mol

mass = 116 × 0.234 = 27.144 grams.  

learn more on masses here: brainly.com/question/10312739?referrer=searchResults

6 0
2 years ago
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