1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olegator [25]
3 years ago
12

A shiny chunk of metal is found to have a mass of 37.28g. The metal is dropped into a graduated cylinder which contains 20.0 mL

of water. The volume of the cylinder rises to 34.0 mL. Determine the density of the metal. What might the metal be made of?

Chemistry
1 answer:
Amanda [17]3 years ago
6 0

Answer: The density of the material is 2.66 g/mL and it is likely this  is made of Aluminum

Explanation:

The first step to know the material of the chunk of metal is to calculate its density. The general formula for density is P (density) = \frac{m (mass)}{ v (volume)}. Moreover, in this case, it is known the mass is 37.28 g, but the volume is not directly provided. However, we know the water in the graduated cylinder had a volume of 20.0 mL and this increased to 34.0 mL when the chunk of metal is added, this means the volume of the metal is 14 mL (34.0 mL - 20.0 mL = 14 mL). Now let's calculate the density:

P = \frac{37.28g}{14.0mL}

P = 2.66 g/mL

This means the density of this metal is 2.66 g/mL, which can be rounded as 2. 7 g/mL, and according to the chart, this is the density of aluminum. Therefore, this material of this chunk is aluminum.

You might be interested in
How many grams of mgo are produced during an enthalpy change of -231 kj ?
SCORPION-xisa [38]

The reaction for the formation of MgO(s):

2 Mg (s) + O2(g) -à 2MgO(s)                     ΔH = -601.24 kJ/mol

<span>The enthalpy information is taken from: http://webbook.nist.gov/cgi/inchi?ID=C1309484&Mask=2</span>

From the equation and with an enthalpy change of -231 kJ:

-231 kJ * 2 mol Mg * (1/-601.24 kJ/mol) = 0.76841 mol Mg

Then, with the molar mass of MgO = 40.3,

0.76841 mol Mg *(2 mol MgO/2 mol Mg)* 40.3 g/mol MgO = <span>30.967 g MgO</span>

3 0
3 years ago
Hydrocarbons consisting of short carbon chains are ________.
Tresset [83]

Answer:

A

Explanation:

Hydrocarbons with short chain lengths are more volatile than those with longer chains. A practical example of this can be seen in the first few members of the alkane series. They are mostly gaseous in nature and this is quite a contrast to the next few members which are solid in nature.

As we move down the group, we can see that there is an increase in the number of solids. Hence, as we go down the group we can see a relative increase in order and thus we expect more stability at room temperature compared to the volatility of the shorter chain

4 0
3 years ago
A scientist analyzes four samples of compounds. He finds the first compound contains 10 grams of sodium, 211 grams of potassium,
Zarrin [17]

Answer:

yea yea

Explanation:

6 0
3 years ago
Which part of the plant carries water and food to and from the leaves?
Alex777 [14]

Answer:

the stem, but if its more specific xylem cells

6 0
2 years ago
Read 2 more answers
I need chemistry help! How would I set up these problems?
Bond [772]

Answer: -

1) 8.33 minutes

2) 118.39 in/ s

180.43 m/min

10.83 km/ hr

Explanation: -

Speed of light = 3 x 10⁸ m/s

Distance of the earth from the sun= 93 million miles

We know 1 million = 1,000,000

Also 1 mile = 1609 m

Distance of the earth from the sun= 93 million miles

= 93,000,000 miles.

= 1.5 x 10^{11} m

Time taken = \frac{Distance}{Speed}

= \frac{1.5 x [tex] 10^{11} m}{3 x 10⁸ m/s} [/tex]

= 500 s

= 500/ 60

= 8.33 minutes

2) Distance = 1 mile = 63360 inches

Time taken = 8.92 min

= 8.92 x 60

= 535.2 s

Speed = \frac{distance}{time}

= \frac{63360 inches}{535.2 s}

= 118.39 in/ s

Distance = 1 mile = 63360 inches = 63360 x 2.54 cm = 63360 x 2.54 x 10^{-2} m

Time taken = 8.92 min

Speed = \frac{distance}{time}

= \frac{63360 x 2.54 x [tex] 10^{-2} m}{8.92 min} [/tex]

= 180.43 m/ min

1 m = 10⁻³ Km

1 min = 1/60 hour

1 m /min = 10⁻³ km/ \frac{1}{60 hour}

= 60/1000

=0.06 km/hr

180.43 m / min = 180 x 0.06 km / hr

= 10.93 km / hr

4 0
3 years ago
Other questions:
  • The elements that lack the most properties of metals are called
    7·1 answer
  • Which radioisotope has the fastest rate of
    14·2 answers
  • K2SO4<br><br> H3PO4 and NaOH<br><br> KOH and H2SO4<br><br> HPO4 and KOH
    13·2 answers
  • For the following reaction, 15.2 grams of chlorine gas are allowed to react with 8.46 grams of water .
    12·1 answer
  • What acid chloride would be needed to prepare the following ketone from benzene using a Friedel-Crafts acylation? Click the "dra
    15·1 answer
  • The following is an example of what type of chemical reaction?
    9·1 answer
  • Write empirical formula
    9·1 answer
  • Briefly outline a procedure you could use to determine the hc2h3o2 concentration in a vinegar sample
    8·1 answer
  • I’m not sure how to do this, please help. It’s a mole to mole stoich worksheet.
    13·1 answer
  • How many grams are present in 0.885 moles of manganese?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!