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mixer [17]
3 years ago
5

Explain relative motion

Chemistry
2 answers:
goldfiish [28.3K]3 years ago
4 0
Here hope this helps you!

Pavlova-9 [17]3 years ago
3 0

Answer:

1 : motion as observed from or referred to some material system constituting a frame of reference (as two adjacent walls and floor of a room) — see relativity sense 3. 2 : the motion of one body with respect to another regarded as fixed — compare relative velocity

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How many seconds are in an exactly 40-hour work week?
Elza [17]
7 days = 1 week 60 seconds<span> = 1 minute.</span>
40 hr 60<span> min </span>60 sec<span> = </span>144,000<span> s. 
The answer is 144,000 seconds hopes this helps :)</span>
4 0
3 years ago
Read 2 more answers
1.
Licemer1 [7]

Answer:

B. Yes, because the mass of all the products of burning is equal to the mass

of the reactants (wood and oxygen gas).

Explanation:

good luck

3 0
3 years ago
You are running a rather large scale reaction where you prepare the grignard reagent phenylmagnesium bromide by reacting 210.14
almond37 [142]

Answer:

We would expect to form 7.35 moles of grignard reagent.

Explanation:

<u>Step 1: </u>Data given

Mass of magnesium = 210.14 grams

Volume bromobenzene = 772 mL

Density of bromobenzene = 1.495 g/mL

Molar mass of Mg = 24.3 g/mol

Molar mass of bromobenzene = 157.01 g/mol

<u>Step 2</u>: The balanced equation

C6H5Br + Mg ⇒ C6H5MgBr

<u>Step 3:</u> Calculate mass of bromobenzene

Mass bromobenzene = density bromobenzene * volume

Mass bromobenzene = 1.495 g/mL * 772 mL

Mass bromobenzene = 1154.14 grams

<u>Step 4</u>: Calculate number of moles bromobenzene

Moles bromobenzene = mass bromobenzene / molar mass bromobenzene

Moles bromobenzene = 1154.14g / 157.01 g/mol

Moles bromobenzene = 7.35 moles

<u>Step 5:</u> Calculate moles of Mg

Moles Mg = 210.14 grams /24.3 g/mol

Moles Mg = 8.65 moles

<u>Step 6:</u> The limiting reactant

The mole ratio is 1:1 So the bromobenzene has the smallest amount of moles, so it's the limiting reactant. It will be completely consumed ( 7.35 moles). Magnesium is in excess, There will react 7.35 moles. There will remain 8.65 - 7.35 = 1.30 moles

<u>Step 7:</u> Calculate moles of phenylmagnesium bromide

For 1 mole of bromobenzene, we need 1 mole of Mg to produce 1 mole of phenylmagnesium bromide

For 7.35 moles bromobenzene, we have 7.35 moles phenylmagnesium bromide

We would expect to form 7.35 moles of grignard reagent.

5 0
3 years ago
Calculate the mass/volume percent of a NaCl solution in which 140 g of NaCl is dissolved in enough water to give a total volume
Len [333]
Mass per volume percent is simply calculated by getting the ratio of the mass in g of solute and the volume in mL of the solution multiplied by 100 percent. In the problem, we are given all the required values. Calculation is as follows:

%w/v = 140 / 1590 x 100 = 8.81%
7 0
3 years ago
A mass of 80 grams of Bromine would be
Elis [28]
I’m pretty sure it’s a
8 0
3 years ago
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