https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x en-us 2022-12-16 02:07:32 UTC 2022-12-16 04:31:45 UTC hello@padlet.com https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422563486 1.a)7.8 g
b)Steel contains carbon atoms  within the latticework of the iron atoms, steel would bemore dense than iron.
2.a)450 g
b)80g

3.1.25cm3]]> 2022-12-16 02:46:10 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422563486 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422564588 Question 1 : A rectangular block of steel measures 4cm x 2cm x 1.5cm. Its mass is 93.6g.

a. density = mass/volume
mass = 93.6 , volume = 4 x 2 x 1.5 = 12
density of the steel = 93.6/12 = 7.8 g/cm^3

b.   Steel contains carbon atoms interlocked within the latticework of the iron atoms, steel would be more dense than iron.

Question 2 :  A half litre bottle has a mass of 80g. It contains 500cm^3 of liquid when full. The bottle is filled with olive oil of density = 0.90g/cm^3

a. 450 g
b. 80g


Question 3 : A coin has a mass of 7.0g. It is made of a metal alloy of density 5.6g/cm^3. Calculate the volume of the coin.

volume = mass/density = 7/5.6 = 1.25 cm^3 ]]> 2022-12-16 02:47:28 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422564588 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422565478 1a. 93.6/120 = 7.8
1b. Steel contains carbon atoms interlocked within the latticework of the iron atoms, steel would be more dense than iron.

2a. 0.90 ✖️500 = 450g
2b. 80g

3. 7.09/5.6 = 1.25 cm3]]> 2022-12-16 02:48:37 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422565478 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422567557 9.3 Density calculations
1a) 7.8g
1b) The latticework of the iron atoms in steel comprises carbon atoms that are intertwined.

2a) 450g
2b) 80g

3) 1.25cm3]]> 2022-12-16 02:51:00 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422567557 Xiao1111 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422569290 1
A. 93.6/12g=7.8g
B. Steel is denser than iron because it has carbon atoms entangled inside the latticework of iron atoms.
2
A. 450g
B.530g
3
A.7/5.6cm3=1.25cm3]]> 2022-12-16 02:53:37 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422569290 hannahlee0716 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422569864 1. A rectangular block of steel measures 4cm × 2cm × 1.5cm. Its mass is 93.6g.
a. Calculate the density of steel.
--> 7.8g/cm³
b. Steel is made almost entirely of iron atoms, but it is denser than iron. Suggest a reason for this.
--> It is because the steel is not only made by iron but also made by other metals. So the iron and other metals are mixed together and it forms steel. Therefore the steel is denser than iron.

2. A half liter bottle has a mass of 80g. It contains 500cm³ of liquid when full. The bottle is filled with olive oil of density = 0.90g/cm³
a. Calculate the mass of oil in the bottle.
--> 450g of mass
b. Calculate the mass of the full bottle.
--> 160g of mass

3. A coin has a mass of 7.0g. It is made of a metal alloy of density 5.6g/cm³. Calculate the volume of the coin.
--> 1.25cm³



]]> 2022-12-16 02:54:28 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422569864 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422574819 1.
a. D= m/v -> D= 93.6g/12cm3 -> D= 7.8cm3/g
b. It contains iron along with other metals.

2.
a. M= d*v -> M= 0.9g/cm3 * 500cm3 -> 450g
b. 80g + 450g -> 530g

3. V= m/d -> V= 70g/5.6g/cm3 -> V= 1.25cm3]]> 2022-12-16 03:00:40 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422574819 chojames1105 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422575789 1a 7.8g/cm³
1b The frame of the iron atoms in steel contains carbon atoms that are linked.

2a 45g
2b 80g

3a 1.25cm³]]> 2022-12-16 03:01:46 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422575789 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422576686 2.a 450g b 530g

3. 1.25cm 

]]> 2022-12-16 03:02:49 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422576686 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422578405 1. a
D = m/V = 93.6g/4×2×1.5 cm3 = 7.8 g/cm3
1. b
Because Iron contains other types of atoms that have lesser density than iron atoms, iron is less denser than steel.
2.a 
M = D×V = 0.9 g/cm3 × 500 cm3 = 450 g
2.b
450g + 80g = 530g
3.
V = m/D = 7g/5.6cm3 = 1.25 cm3]]> 2022-12-16 03:05:06 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422578405 https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422631713 1. 7.8g/cm^3
steel also contains other metals
2. 450g
530g
3. 1.25]]> 2022-12-16 04:31:45 UTC https://padlet.com/meagerguaranteeinc/yi8l6oiivprq6a1x/wish/2422631713