3 years ago

Where is the most active region of star formation in our galaxy

1 answer:

6 0

Answer:

The most active formation of stars found in our galaxy are in the center of milky way near or close to the dwarf planets

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Table salt is the compound Sodium chloride (NaCl).Use the periodic table to find the molar mass of NaCl.

astraxan [27]

The molar mass is 58.44g/mol

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3 years ago

Inside a room, the air is often warmer near the ceiling then near the floor. Which of the following accounts for this difference

Vanyuwa [196]

The correct answer is C. convection

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3 years ago

One agent of chemical weathering is _______________ which combines with water to form carbonic acid

ololo11 [35]

I believe the answer is carbon dioxide. Because when carbon dioxide and water combine in the atmosphere it forms a very weak acid called carbonic acid, which falls to the Earth's surface as precipitation.

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3 years ago

Why can't 1−methylcyclohexanol be prepared from a carbonyl compound by reduction? select the single best answer?

forsale [732]

1−methylcyclohexanol is a tertiary alcohol. Tertiary Alcohols are synthesized by either reacting Ketone with Organometallic compounds like Grignard reagent or by hydration of substituted alkenes. <span>1−methylcyclohexanol can not be synthesized by reduction of carbonyl compound because it is not possible to have a starting carbonyl compound having carbonyl group along with three other alkyl groups (as carbon can only form 4 bonds).

Result:
Tertiary alcohols don't contain a hydrogen atom at carbon attached to hydroxyl group that is why it is not possible to synthesize </span><span>1−methylcyclohexanol by reduction of carbonyl compound.</span>

4 0

3 years ago

5. How many grams of Br is needed to make 1000.g of a 2.0ppm solution?

Volgvan

Answer:

2.0 × 10⁻³ g

Explanation:

Step 1: Given data

Mass of solution: 1000. g (1.000 kg)

Concentration of Br₂: 2.0 ppm

Step 2: Calculate the mass of Br₂ required to prepare the solution

The concentration of Br₂ is 2.0 ppm, that is, there are 2.0 mg of Br₂ per kilogram of solution. The mass of Br₂ required to prepare 1.000 kg of solution is:

1.000 kg Solution × 2.0 mg Br₂/1 kg Solution = 2.0 mg

Step 3: Convert the mass to grams

We will use the conversion factor 1 g = 1000 mg.

2.0 mg × 1 g/1000 mg = 2.0 × 10⁻³ g

8 0

3 years ago