what is the use of density in the calculation of percentage by mass
1. what is the use of density in the calculation of percentage by mass
Jawaban:
%B = p 10 B / MrPenjelasan:
semoga bermanfaat
2. 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
3. a sample of 0.3220 g of an ionic compound containing the bromide ion (Br2) is dissolfed in water and treated with an excess of AgNO3.if the mass of the AgBr precipitate that froms is 0.6964 g. what is the percent by mass of Br in the original compound ?
Jawaban:
gak tau p
Penjelasan:
ga bisa basa inggris
4. The mass of a dictionary is 1.28 kg. The mass of the dictionary is twice the mass of a storybook. The mass of an encyclopaedia is 1.4 kg more than storybook. What is the mass of the encyclopaedia?
Jawaban:
2.04 kg
Penjelasan dengan langkah-langkah:
Jika berat sebuah kamus 2 kali berat buku cerita, maka berat buku cerita adalah setengah dari berat kamus. Sehingga berat ensiklopedia adalah
1.4 kg + (1.28 ÷ 2) kg
= 1.4 kg + 0.64kg
= 2.04 kg
5. The mass of a bag of 10 identical cubes is 768 g. The mass of the bag is 120 g. What is the mass of each cube?
Answer:
64.8 g
Explanation with steps:
mass of 10 cubes = total mass - mass of the bag
mass of 10 cubes = 768 g - 120 g
mass of 10 cubes = 648 g
therefore, the mass of each cube is 648 g / 10 = 64.8 g
6. The mean mass of 11 player in a football team is 65.2kg the mean mass of the team plus a substitute is 65.4kg what is the mads of the substitute
Jawab:
the mass of a subtitute is 67,6 kg
Penjelasan dengan langkah-langkah:
mean mass = 65,4
(65,2 x 11) + x / 12 = 65,4
717,2 + x = 784,8
x = 784,8 - 717,2
x = 67,6 kg
7. What is the 11 percent of 37?
Jawaban:
4.07
Penjelasan dengan langkah-langkah:
[tex]11\% \times 37 \\ \frac{11}{100} \times 37 \\ \frac{407}{100} = 4.07[/tex]
8. The average mass of 2 chairs is 12 kg. The mass of one of the chairs is 9 kg. What is the mass of the other chair?
Jawaban:
15kg
Penjelasan dengan langkah-langkah:
[tex]12 = \frac{9 + x}{2} \\ 9 + x = 12 \times 2 \\ 9 + x = 24 \\ x = 24 - 9 \\ x = 15[/tex]
Semogamembantu!
Jawaban:
the mass of the other chair is 15 Kg
Penjelasan dengan langkah-langkah:
Diketahui : average (rata-rata) mass of 2 chair 12 Kg
The mass of one of the chairs is 9 Kg
the mass of the other chair = x
[tex] \frac{9 + x}{2} = 12 \\ x = 15[/tex]
9. 2/3 of the mass of a lobster is equal to 3/8 of the mass of a king crab. the difference in their masses is 7/10 kg. what is the mass of the king crab?
Jawab:
1.6 kg
Penjelasan dengan langkah-langkah:
Let : Mass of a lobster = L
Mass of a king crab = K
So :
[tex]\frac{2}{3} L = \frac{3}{8} K\\\\L = \frac{3}{8} K \ x \ \frac{3}{2} = \frac{9}{16} K\\\\K > L, so\\\\K - L = \frac{7}{10} \\\\K - \frac{9}{16} K = \frac{7}{10}\\\\\frac{7}{16} K = \frac{7}{10}\\\\K = 1.6 kg[/tex]
10. Which definition of concentration given below best describes the concept expressed in “in a solution of 10g of salt and 70ml of water, the concentration of the solution by percent mass is 12,5%2?”
jawabannya
1.The amount of water in the solution
2 A word denoting 70g
3 The mass of the solution
4 The amount of a component (solute) present.
5 The amount of solution
Terjemahan :
Jumlah 1. air dalam larutan 2 A 70g kata yang menunjukkan 3 Massa solusi 4 Jumlah komponen ( zat terlarut ) hadir . 5 Jumlah solusi
11. THE TOTAL MASS OF MACHINE A AND MACHINE B IS 80.5 KG. THE MASS OF MACHINE B IS 4 TIMES THE MASS OF MACHINE A. WHAT IS THE MASS OF MACHINE B? EXPRESS YOUR ANSWER IN GRAMS!
A + B = 80,5
A + 4A = 80,5
5A = 80,5
A = 80,5 : 5 = 16,1
B = 4A = 4(16,1) = 64,4 KG = 64.400 GR
12. the mass of 1 orange is 110 grams what is the mass of 5 oranges?
Jawaban:
5 orange × 110 grams = 550 grams
Jawaban:
If 1 orange is 110 grams,so the mass of 5 oranges is :
= 110 grams x 5
= 550 grams
13. The mass of a box with 2 marbles is 4.3 gram. The mass of each marbles is 1,3 gram. What is the mass of
Jawab:
the mass of a box is 1,7 gram.
Penjelasan dengan langkah-langkah:
14. the mass of pencil 115 grams the mass of a book is 385 grams what is the their total mass
Jawaban:
500 mass is the total mass
The total mass is115 grams + 385 grams=500 grams
So,the total mass is 500 grams
15. the mass of a bag of nuts is 215 g What is the mass of 10 bags of nuts in kilograms, kg?
[tex] \frac{10 \: bags}{1 \: bag} \times 215 \: g = 2150 \: g = 2.15 \: kg[/tex]
16. a sample of 0.3220 g of an ionic compound containing the bromide ion (Br2) is dissolfed in water and treated with an excess of AgNO3.if the mass of the AgBr precipitate that froms is 0.6964 g. what is the percent by mass of Br in the original compound ?
Jawaban:
aku juga mau tanya sama kamu gimana sih bikin pertanyaan lagi aku ngk bisa yah
17. The mass of 30 identical books is 9.6 kg. What is the mass of each book?
Jawab:
0,32 kg
Penjelasan dengan langkah-langkah:
the mass of each book
= 9.6 kg/30
= 0,32 kg
18. The mass of tom' s bag of groceries is 900 g,The mass of Tina's bag groceries is 750 g, What is the total mass of both bag of groceries in kg?
Jawaban:
1,65 kg
Maaf kalau salah
Semoga membantu
1,65 kg
Penjelasan:
900 g + 750 g = 1650 g
1 kg = 1000 g
1650 g = 1,65 kg
19. a kitten and a basket has a mass of 3 kg . A hamster and a similar basket has a mass of 1.4kg . the mass of the kitten is 5 times the mass of the hamster .a. what is the mass of the hamster ? , b. what is the mass of the kitten ?
kitten = x ,hamster = y and baskest = z
x+z = 3 kg
y+z = 1,4 kg
z = x- y = 3 kg - 1,4 kg = 1,6 kg
x+y = 4,4 kg - 1,6 kg = 2, 8 kg
x = 5y
5y +y = 2,8 kg
6y = 2,8 kg
y = 2,8 kg /6
y = 0,47 kg
x = 5y
= 5 * 0,47 kg
= 2,35 kg
a. mass off hamster = 0,47 kg
b. mas off kitten = 2,35 kg
bonus...mass of basket = 1,6 kg
thank's
20. The mass of a sack of potatoes is 5 kilograms 305 grams. What is the mass of the sack of potatoes in grams?
Jawaban:
jika Anda ingin bertanya itu deng 234
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