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
AlexFokin [52]
3 years ago
14

Show work plzzz

Chemistry
2 answers:
tekilochka [14]3 years ago
7 0

Answer:

1= Volume

= Length x breath x height

= 13.90 x 2.9 x 0.081

=3.26511

2= Density = Mass ÷ volume

= 11.3 ÷ 3.26511

= 3.461 (3d.p)

idk the rest because you haven't shown a picture of the rest

Aleksandr-060686 [28]3 years ago
4 0

Answer:

1. 3.3 cm³; 2. 3.5 g/cm³; 3. barium; 4. 4%

Explanation:

Experimental data:

Mass          = 11.3    g

Length      = 13.90 cm

Width        =  2.9    cm

Thickness = 0.081 cm

Calculations:

1. Volume of bar

V = lwh = 13.90 cm × 2.9 cm × 0.081 cm = 3.3 cm³

2. Experimental density

\text{Density} = \dfrac{m}{V} = \dfrac{\text{11.3 g}}{\text{3.27 cm}^{3}} = \textbf{3.5 cm}^{\mathbf{3}}

3. Identity of metal

The three most likely metals are scandium (3.00 g/cm³), barium (3.59 g/cm³), and yttrium (4.47 g/cm³)

The metal is probably barium.

4. Percent difference

\begin{array}{rcl}\text{Percent difference}&= &\dfrac{\lvert \text{ True - Calculated}\lvert}{ \text{True}} \times 100 \,\%\\\\& = & \dfrac{\lvert 3.59 - 3.5\lvert}{3.59} \times 100 \, \% \\\\& = & \dfrac{\lvert 0.1\lvert}{3.59} \times 100 \, \%\\ \\& = & 0.04 \times 100 \, \%\\& = & \mathbf{4 \, \%}\\\end{array}\\\text{The percent difference is $\large \boxed{\mathbf{4 \, \%} }$}

You might be interested in
Which of the following radiation sources provides the greatest radiation dose?
ch4aika [34]
The radiation source that provides the greatest radiation dose is one year of natural background radiation. 
6 0
3 years ago
Use the drop-down menus to identify the electromagnetic waves.
mezya [45]

Answer:

Label A - Radio waves

Label C - Infrared

Label D - Visible light

Label G- Gamma rays

Explanation:

  • Electromagnetic spectrum is an arrangement of electromagnetic waves in order of their varying frequencies and wavelengths,
  • Radiowaves have the highest wavelength and lowest frequency while the gamma rays have the lowest wavelength and the highest frequency.
  • In order of increasing wavelength and decreasing frequency the electromagnetic waves are; Gamma rays, X-rays, U.V light, Visible light, infrared waves, microwaves, and Radio waves.
6 0
3 years ago
Read 2 more answers
How many moles of dinitrogen tetroxide (N2O4) are in 6.49 x 109 particles?
yan [13]

Answer: There are 1.08 \times 10^{-14} moles N_{2}O_{4} present in 6.49 \times 10^9 particles.

Explanation:

According to the mole concept, 1 mole of a substance contains 6.022 \times 10^{23} particles.

Hence, number of moles present in 6.49 \times 10^9 particles are calculated as follows.

No. of moles = \frac{6.49 \times 10^9}{6.022 \times 10^{23}} mol

                      = 1.08 \times 10^{-14} mol

Thus, there are 1.08 \times 10^{-14} moles N_{2}O_{4} present in 6.49 \times 10^9 particles.

6 0
3 years ago
Read 2 more answers
Mass box A = 10 grams; Mass box B = 5 grams; Mass box C—made of one A and one B Mass ratio A/B =
LUCKY_DIMON [66]

Answer:

mass ratio of A/B is 2:1

Explanation:

Since the mass of box A = 10g

                mass of box B = 5g

   Mass of box C = mass of box A + mass of box

A ratio compares two quantities. To find the ratio of the two boxes:

  Ratio of A to B = \frac{mass of A}{mass of B}

  Ratio of A to B = \frac{10grams}{5grams} = 2

The mass ratio is 2:1 i.e box A has twice the mass of B

8 0
3 years ago
Balance <br> Si4H10+O2&gt;SiO2+H2O
Illusion [34]

Explanation: Si4H10+O2>SiO2+H2O

2Si4H10 + 13O2 = 8SiO2 + 10H2O

5 0
3 years ago
Other questions:
  • How many moles of cesium (Cs) atoms are in 675 g Cs?
    10·1 answer
  • Nuclear Forcesin determining nuclear binding energy, what is Einstein's equation used to do?
    5·2 answers
  • Iron (Fe): [Ar]4s23d6 core electrons valence electrons
    9·2 answers
  • 100 POINTS!!!!
    11·2 answers
  • Which energy carries are formed by light dependent reaction
    11·1 answer
  • How many moles of water, H2O, contain 2.0×1022 molecules of water?
    10·1 answer
  • A sample of gas kept at a constant pressure, is heated from 273 k to 373 k. If the initial volume is 3.00 L, what is the new vol
    14·1 answer
  • El tiempo que transcurre para que los moléculas de reactivos rompan sus enlaces y elaboren nuevos enlaces para dar origen a los
    11·1 answer
  • The name of the formula MnCl7 <br><br> I need a lot of help pls help me
    7·1 answer
  • An experiment at sandia national labs in New Mexico is performed at 99.47 kPa (due to the altitude). What is this pressure in at
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!