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Novay_Z [31]
3 years ago
13

Which of the following balances has the least uncertainty? (PSS.1)

Chemistry
1 answer:
ki77a [65]3 years ago
5 0
Answer:


Analytical balance


That should be the answer
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Calculate the grams of solute in each of the following solution: 278 mL of 0.038 M Fe2(SO4)3
Goryan [66]

Answer:  4.22 grams of solute is there in 278 ml of 0.038 M Fe_2(SO_4)_3

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

Now put all the given values in the formula of molality, we get

0.038M=\frac{n}{0.278L}

n=0.0105mol  

mass of  Fe_2(SO_4)_3 = moles\times {\text {Molar Mass}}=0.0105\times 399.88g/mol=4.22g

Thus 4.22 grams of solute is there in 278 ml of 0.038 M Fe_2(SO_4)_3

3 0
3 years ago
How many liters are there in 3.0 moles of CO2 at STP?
Lerok [7]

There are 67.2 liters of CO2 at STP

<h3>Further explanation</h3>

Given

3 mole of CO2

Required

Volume of CO2 at STP

Solution

Standard conditions for temperature and pressure are used as a reference in certain calculations or conditions

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

So for 3 moles :

= 3 x 22.4 L

= 67.2 L

8 0
3 years ago
Deltas are formed at the mouth of a river. They are formed by ______ of sediments, soil, sand, gravel, which is a constructive p
Mazyrski [523]
Deltas are formed by deposits of sediments, soil, sand, and gravel. 
7 0
3 years ago
When a scientist is beginning the process what is the key term she or he must ask in order to begin?
ella [17]

Answer:

B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how

5 0
3 years ago
Compare municipal solid waste and manufacturing solid waste
juin [17]
Solid waste is any discarded material and manufacturing waste is waste produced by households and business 

3 0
4 years ago
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