The density of aluminium is 2.7 kg/m3. If the mass of aluminium is 8.1 grams, what is the volume of the aluminium in m3?
1. The density of aluminium is 2.7 kg/m3. If the mass of aluminium is 8.1 grams, what is the volume of the aluminium in m3?
Jawaban:
[tex]\sf\large{V=0,003\ m³}[/tex]
Penjelasan dengan langkah-langkah:
The known things are;
[tex]\sf\large{ρ = 2,7\ kg/m³}[/tex]
[tex]\sf\large{m = 8,1\ g = 0,0081\ kg}[/tex]
The asked of the volume of aluminium
The answer is;
Use the formula;
[tex]\sf\large{ρ} = \LARGE{\frac{m}{V}}[/tex]
[tex]\sf\large{V} = \LARGE{\frac{m}{ρ}}[/tex]
[tex]\sf\large{V} = \LARGE{\frac{0,0081}{2,7}}[/tex]
[tex]\sf\large{V = 0,003\ m³}[/tex]
So, the volume of the aluminium is [tex]\sf\large0,003\ m³[/tex]
2. 5. (a) A copper ball has a mass of 1 kg. Calculate the radius of the ball, given that the density of copper is 8900 kg m^-3tolong ya kak makasih..
Jawaban:
3 x 10^-2 m
Penjelasan:
Massa = 1 kg
Massa Jenis = 8900 kg/m³
Massa Jenis = Massa / Volume
8900 kg/m³ = 1 kg/Volume
Volume = 1/8900 m³
V = 4/3 πr³
1/8900 = 4/3 x π x r³
r³ = 3/4π x 8900
r = 0,03 m = 3 x 10^-2 m
3. unit terbesar dan terkecil density( kg/m3)
Jawaban:
The density (lebih tepatnya, kepadatan massa volumetrik , juga dikenal sebagai massa jenis ), suatu zat adalah yang massa per satuan volume yang . Simbol yang paling sering digunakan untuk kepadatan adalah ρ (huruf Yunani kecil rho ), meskipun huruf Latin D juga dapat digunakan. Secara matematis, massa jenis didefinisikan sebagai massa dibagi volume: (1)
maaf kalau salah
4. A metal cube of side 1 cm has a mass of 100 g. Calculate the density of the metal cube in gm/cm3 and in kg/cm3
Jawab:10g
Penjelasan dengan langkah-langkah:
5. An alloy is made by combining 900 g of copper with 400 g of iron. If the densityof copper is 9 g/cm and density of iron is 8 g/cm', what is the density of the alloy?(assume that the volume of each metal does not change during mixing.)
ρ(cop) = 9 gr/cm³
ρ(iron) = 8 gr/cm³
ρ = m/Vol
Vol = m/ρ ~ constant!
ρ' = ρ(cop) + ρ(iron)
= 9 + 8
= 17 gr/cm³ ~ 17 × 10³ kg/m³ ✓✓
6. a block has density of 2500 kg/m^3 and when in air it weight 25 newton. determine the weight of the block in water
Jawaban:
15 Newton
Penjelasan:
[tex]w = m × g \\
25 = m × 10 \\
m = 2.5 \: kg \\
ρ = \frac{m}{v} \\ 2500 = \frac{2.5}{v} \\ v = {10}^{ - 3} \: {m}^{3}[/tex]
[tex]Fa = \: ρf \times g \times v \: \\ Fa = \: {10}^{3} \times 10 \times {10}^{ - 3} = 10 \: N[/tex]
[tex]w'=w - Fa =25 - 10 = 15 \: N[/tex]
Fa = Archimedes Force
ρf = fluid density (water ρf = 1 000 kg/m³)
w' = weight of the block in water
7. 25 gram of alloy composed of copper(Cu) and zinc (Zn) is reacted with HCl, and 4,48 L of hydrogen is obtained at STP. What is the mass presentage of copper in the alloy? catatan : copper tidak beraksi dengan HCl. mohon tuliskan caranya
Zn + 2 HCl => ZnCl2 + H2
V H2 STP = 4,48 liter
V STP = 22,4 liter/mol
mol H2 = 4,48 liter / 22,4 liter/mol = 0,2 mol
mol Zn = mol H2 (koefisien sama) = 0,2 mol
massa Zn = 0,2 mol x 65 gr/mol = 13 gram
massa Cu = 25 - 13 = 12 gram
% Cu = 12 gr/25gr x 100% = 48%
8. Kakak mau nanya konvert dari 460 kg/2,5 jam brp m3/jam yahDimana mediumnya cokelat dan density dari cokelat
Jawaban:
460 kg/2,5 jam= 0,184 m³/jam
_
Penjelasan:
460 kg/2,5 jam= ... m3/jam
1 kg = 1 liter = 0,001m³
460kg = 460×0,001m³ = 0,46m³460 kg/2,5 jam=
0,46m³/2,5jam = 0,184m³/jam_
Semoga Membantuuuu ☺
9. a metal cube of side 1 cm has a mass of 100g. Calculate the density of the metal cube in:a. g/cm³b. kg/cm³
Jawaban:
kubus logam dengan sisi 1 cm memiliki massa 100g. Hitung massa jenis kubus logam di:
a. g / cm³
b. kg / cm³
diket
r kubus= 1cm
m=100g
cari volume kubus
v kubus = s x s x s
= 1 x 1 x 1
= 1 cm³
ρ=m/v
a.dalam g/cm³
ρ=100/1cm³
=100 g/cm³
b. dalam kg/cm³
ubah satuan masa dari g ke kg
100g =0,1kg
ρ=m/v
=0,1kg/1cm³
=0,1 kg/cm³
10. a stone of density 3500 kg/m3 if The Rock Fragments Has Volumes Of 700 cm3 Then A Mass Of Stone Is.... A. 20 Kg B. 200 Kg C. 2.450 G D. 2,450 KG
Jawaban:
sebuah batu massa jenisnya 3500 kg/m3 jika pecahan batu tersebut volumenya 700 cm3 maka massa batu tersebut adalah....
A.20 Kg
B.200 Kg
C. 2.450 G
D. 2.450 KG
Penjelasan:
wee tukang translate
11. which would have more volume, 1 kg of lead or 1 kg of copper
1 kg of copper.maybe
12. what is the use of density in the calculation of percentage by mass
Jawaban:
%B = p 10 B / MrPenjelasan:
semoga bermanfaat
13. 5. A block of copper of specific heat of 385 J/kg°C at a temperature of 95°C with 5 kg of mass is dropped into water of 2.5 kg of mass at a temperature of 15°C. If the specific heat of water is 4200 J/kg°C what is the final temperature of copper?
Jawaban :
Penjelasan:
Q lepas = Q terima
m . c . ~T = m . c . ~T
5 × 385 × (95 - Tc) = 2,5 × 4200 × (Tc - 15)
1925 × (95 - Tc) = 10500 × (Tc - 15)
385 × (95 - Tc) = 2100 × (Tc - 15)
55 × (95 - Tc) = 300 × (Tc - 15)
11 × (95 - Tc) = 60 × (Tc - 15)
1045 - 11Tc = 60Tc - 900
1945 = 71.Tc
Tc ≈ 27,4°C
14. A metal hemispherical bowl has an external diameter of 50.8 cm and thickness of 2.54cm.i) given that the empty bowl weights 97.9 kg, find the density, in kg/m cube, of the metal which the bowl is made of.ii) if the bowl is completely filled with a liquid of density 3 1.75kg/m cube, find the mass of liquid in grams.
Jawaban:
A metal hemispherical bowl has an external diameter of 50.8 cm and thickness of 2.54cm.
i) given that the empty bowl weights 97.9 kg, find the density, in kg/m cube, of the metal which the bowl is made of.
ii) if the bowl is completely filled with a liquid of density 3 1.75kg/m cube, find the mass of liquid in grams.
15. How much heat is needed to raise the temperature of a block of copper (weighing 0.5 kg) from 0°C to 100°C? (the specific heat capacity of copper, c = 400 J / kg°C)
Q = m.c.∆t
Q = 0,5 kg . 400 J/kg°C . (100-0)°C
Q = 200 J . 100
Q = 20.000 J
16. eCalculate the pressure at the bottom of an oil storage tank of depth 2.50 m. The oil has a density of 980 kg/m3 andg= 10 m/s?
Jawaban:
980 kg/m3 . 10 m/s2 . 2.50 m
= 24,500 Pa
= 24,5 kPa
17. A metal has a density of 750 kg / m3. If the mass is 30 kg. Calculate the volume of the metal
Penjelasan:
HgvjbfvkfwfjudnjgbjhvbjutaadbkkJawaban:
0,04 m³
Penjelasan:
Diket :
Ρ= 750 kg / m3
m = 30 kg.
Dit :
v
Jawab:
p = m/v
750 = 30/v
750v = 30
v = 0,04 m³
Semoga membantu : )
18. the density of ball weighing 0,5 kg and diameter 10 cm is....
We know if radii = 1/2 dia
r = 10/2
r = 5 cm
The ball volume formula is 4/3 phi r r r
= 4 3,14 5 5 5 / 3
= 523,59877 cm3, make it simple
= 523,6 cm3
Then I change 5 kg to 5000 gram (its equal, of course).
Density or Rho in greek (similar with letter p, lets use p) formula is mass/volume
p = 5000 g / 523,6 cm3
p = 9,54927 gram / cm3 (make it easy as pie)
p = 9,55 gram / cm3
19. A cube of copper has a mass of 600kg. copper has a density of 9.3g/cm³. Calculate the length of each side of the cube to the nearest mm.
This is how you solve it
volume = 600.000 / 9,3 (we make 600 kg to 600.000 g because the density use gram to)
Volume = 64.516 cm³ (approximately)
Lenght = 254 cm
Lenght = 254,0 mm
20. What is the use of density in the calculation of percentage by mass?
Penjelasan:
Apa gunanya massa jenis dalam perhitungan persentase massa?
Jawaban:
Density can also be used to determine the mass percent of an unknown concentration.
Penjelasan:
maaf kalau salah, semoga dapat terbantu
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