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artcher [175]
3 years ago
13

You measure water in two containers:a 10-mL graduated cylinder with marks at every mL, and a 1-mL pipetmarked at every 0.1 mL. I

f you have some water in each of thecontainers, and add them together, to what decimal place could youmeasure the total?
A. 0.01 mL
B. 0.1 mL
C. 1 mL
D. 10 mL
E. none of these

Chemistry
1 answer:
Reptile [31]3 years ago
6 0

Answer:

B. 0.1 mL

Explanation:

The solution explanation has been attached.

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Write the formulae for the following and calculate the molecular mass for each one of them,
tatuchka [14]

Explanation:

a) NaHCO₃

= 23 + 1 + 12 + 16×3

= 23 + 1 + 12 + 48

= 84 g/mol

b) CaO

= 40 + 16

= 56 g/mol

c) NaCl

= 23 + 35.5

= 58.5 g/mol

8 0
3 years ago
What is the total number of Joules of heat absorbed by 65.0 grams of water when the temperature of the water is raised from 25°C
Norma-Jean [14]

Answer:

Total number of heat absorbed is 4.08kJ

Explanation:

Explanation is contained in the picture attached

5 0
2 years ago
Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 7.80 moles of magnesium perchlorate, Mg(ClO4)2.
Dmitry [639]
 The number of moles of moles of  Magnesium,chlorine and oxygen atoms in 7.80 moles of Mg(ClO4)2 is calculated as below

find the total number of each atom in Mg(ClO4)2

that is mg = 1 atom
        Cl =  1x2 = 2 atoms
        O  = 4  x2 = 8 atoms

then multiply 7.80 moles with total number of each atom , to get the number moles of each atom
that is

Mg = 7.80 x1= 7.80  moles
cl =   7.80  x2=15.6  moles
O =  7.80 x8= 62.4 moles

5 0
3 years ago
Which of the following chemical reaction are redox reactions: PCl3 + Cl2 ® PCl5 Cu + 2AgNO3 ® Cu(NO3)2 + 2Ag
zvonat [6]

Explanation:

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8 0
2 years ago
The tiny magnetic effect of atoms within a domain is due to electrons that are _____. paired and spinning in opposite directions
VLD [36.1K]
<span>The tiny magnetic effect of atoms within a domain is due to electrons that are unpaired and spinning in the same direction.</span>
3 0
2 years ago
Read 2 more answers
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