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3 years ago

Motorcyclists must make a bigger adjustment in speed than other drivers when __________.

2 answers:

8 0

Motorcyclists must make a bigger adjustment in speed than other drivers when:
a) Encountering a storm drain, gravel surface, or pothole
b) Driving on a rain slick road or through a puddle
c) Driving in heavy rain and/or strong wind

zlopas [31]3 years ago

7 0

Answer:

given below

Explanation:

Motorcyclist must make a bigger adjustment in speed than other driver when they are moving on the curved road.

Motorcyclist had also to adjust his speed more when he is moving in huge storm and rainy condition.

On the curved surface they have very high risk getting out of the way so , they had to slow down at the curved surface also.

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Water has a density of 1 g/cm3 . If a rock has a density of 2.3 g/cm3 then it will when placed in water.

hammer [34]

Answer:

The rock will sink.

Explanation:

If the object has a higher density then the liquid it is being placed in it will sink.

3 0

3 years ago

5.00 ml of commercial bleach was diluted to 100.0 ml. 25.0 ml of the diluted sample was titrated with 4.56 ml of 0.100 m s2o3 2-

aev [14]

The solution would be like this for this specific problem:

4 NaOCl + S2O3{2-} + 2 OH{-} → 2 SO4{2-} + H2O + 4 NaCl

(0.00456 L) x (0.100 mol/L S2O3{2-}) x (4 mol NaOCl / 1 mol S2O3{2-}) x (100.0 mL / 25 mL) x 
(74.4422 g NaClO/mol) = 0.54313 g

(5.00 mL) x (1.08 g/mL) = 5.40 g solution

(0.54313 g) / (5.40 g) = 0.101 = 10.1%

So, the average percent by mass of NaClO in the commercial bleach is 10.1%.

3 0

3 years ago

g You observed the formation of several precipitates in the Reactions in Solution lab exercise. Identify the precipitate in each

RUDIKE [14]

Answer:

For a: Lead iodide is a yellow precipitate.

For b: Barium sulfate is a white precipitate.

For c: Ferric hydroxide is a brown precipitate.

For d: Copper (II) hydroxide is a blue precipitate.

Explanation:

Precipitation reaction is defined as the reaction where a solid precipitate (solid substance) is formed at the end of the reaction. It is insoluble in water.

For the given options:

For (a):

The chemical reaction between KI and lead (II) nitrate follows:

$2KI(aq)+Pb(NO_3)_2(aq)\rightarrow PbI_2(s)+2KNO_3(aq)$

The iodide of lead is generally insoluble in water. Thus, lead iodide is a yellow precipitate.

For b:

The chemical reaction between barium chloride and sulfuric acid follows:

$BaCl_2(aq)+H_2SO_4(aq)\rightarrow BaSO_4(s)+2HCl(aq)$

The sulfate of barium is insoluble in water. Thus, barium sulfate is a white precipitate.

For c:

The chemical reaction between NaOH and ferric chloride follows:

$3NaOH(aq)+FeCl_3(aq)\rightarrow Fe(OH)_3(s)+3NaCl(aq)$

The hydroxide of iron is insoluble in water. Thus, ferric hydroxide is a brown precipitate.

For d:

The chemical reaction between NaOH and copper sulfate follows:

$CuSO_4+2NaOH\rightarrow Cu(OH)_2+Na_2SO_4$

The hydroxide of copper is insoluble in water. Thus, copper (II) hydroxide is a blue precipitate.

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3 years ago

90 grams of glucose, C6H12O6, is dissolved in 2 liters of solution. Determine the molarity (M).

Masja [62]

Answer:

0.25 M

Explanation:

The first step is to determine how many moles of glucose there are, which means first finding out the molar mass of glucose. Carbon has a molar mass of about 12, hydrogen 1, and oxygen 16, so the total molar mass of glucose is about 6(12)+12(1)+6(16)=180 grams. This means that 90 grams is half a mole. Half a mole of substance divided by two liters of solution is (1/2)/2=1/4, or a molarity of 0.25. Hope this helps!

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4 years ago

How does the solubility of a gas change with decreasing temperature? A. It increases. B. It decreases. C. It is uniform. D. Temp

vitfil [10]

A it increases is the correct answer.

Good luck and I hope this helps.!

3 0

3 years ago