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4 years ago

Which moon phase comes after a first quarter moon? (Show and label it)

Chemistry

1 answer:

Valentin [98]4 years ago

4 0

Waxing gibbous is the phase of the moon that comes after the first quarter.

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Mrs. Marlow's class is conducting an investigation of a mixture of sand, iron filings, and salt. They were told that they must s

aliina [53]

A mixture can be separated by looking at the physical properties of the components of the mixture.

Since salt is soluble in water, it can be added to the mixture to dissolve the salt.

The bar magnet is now introduced in order to remove the iron filings since they are attracted by a magnet.

The solution is filtered to separate the sand from the salt solution.

Lastly, the salt solution is heated to dryness to drive away the water and obtain the solid salt.

Hence the mixture has been separated into its components using their individual physical properties. Option A is the correct answer.

Learn more: brainly.com/question/12160179

8 0

3 years ago

Under which conditions would the solubility of a gas be greatest?

Licemer1 [7]

The correct answer is A).

8 0

4 years ago

In a recent Grand Prix, the winner completed the race with an average speed of 299.8 km/h. What was his speed in miles per hour,

scoundrel [369]

Answer :

(a) The speed is, 186.287 mi/hr

(b) The speed is, 83.277 m/s

(c) The speed is, 273.22 feet/s

Explanation :

(a) We are given the speed is, $299.8km/hr$

As we know that,

$1km=\frac{1}{1.60934}mi$

By using both the conversion, we get:

$299.8km/hr$

$\Rightarrow \frac{299.8km}{1hr}\times \frac{1mi}{1.60934km}$

$\Rightarrow 186.287mi/hr$

The speed is, 186.287 mi/hr

(b) We are given the speed is, $299.8km/hr$

As we know that,

$1km=1000m$

and,

$1hr=3600s$

By using both the conversion, we get:

$299.8km/hr$

$\Rightarrow \frac{299.8km}{1hr}\times \frac{1000m}{1km}\times \frac{1hr}{3600s}$

$\Rightarrow 83.277m/s$

The speed is, 83.277 m/s

(c) We are given the speed is, $299.8km/hr$

As we know that,

$1km=3280.84feet$

and,

$1hr=3600s$

By using both the conversion, we get:

$299.8km/hr$

$\Rightarrow \frac{299.8km}{1hr}\times \frac{3280.84feet}{1km}\times \frac{1hr}{3600s}$

$\Rightarrow 273.22feet/s$

The speed is, 273.22 feet/s

3 0

4 years ago

You are the medical examiner at the scene of a murder at a restaurant. There is a

Hoochie [10]

The compound : C₄₀H₄₄N₄O

<h3>Further explanation</h3>

The empirical formula is the smallest comparison of atoms of compound =mole ratio of the components

The principle of determining empirical formula

• Determine the mass ratio of the constituent elements of the compound.

• Determine the mole ratio by dividing the percentage by the atomic mass

The mol ratio of composition : C : H : N : O

$\tt \dfrac{80.66}{12}\div \dfrac{7.39}{1}\div \dfrac{9.39}{14}\div \dfrac{2.68}{16}\\\\6.722\div 7.39\div 0.671\div 0.1675\rightarrow divide~by~smallest(0.1675)\\\\40\div 44\div 4\div 1$

3 0

3 years ago

A 12.630 g milk chocolate bar is found to contain 8.315 g of sugar. part a part complete how many milligrams of sugar does the m

kolezko [41]

Answer:
A 12.630 bar of chocolate contains 8315 milligrams of sugar

Explanation:
From the basics of conversion, we can find that:
1 gram is equal to 1000 mg
Using cross multiplication, we can find how many milligrams are present in 8.315 grams as follows:
1 gram .............> 1000 mg
8.315 grams ....> ?? mg
amount in milligrams = (8.315*1000) / 1 = 8315 milligrams

Hope this helps :)

5 0

4 years ago