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GrogVix [38]
3 years ago
11

Miranda gets a small cut on her thumb after she breaks a beaker, and she begins to look around for the lab first aid kit. What i

mportant first step should she have taken?
Chemistry
2 answers:
astraxan [27]3 years ago
9 0

she should have first notified her teacher.

Mariulka [41]3 years ago
4 0

The first step Miranda should have taken was to notify her teacher.

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Which of these is a compound?<br> A)air<br> B)sugar C12H22O11<br> C)the alloy steel<br> D)nitrogen N
7nadin3 [17]
Nitrogen N I think would be the answer
6 0
3 years ago
What is the mass number of chlorine?
Anastasy [175]

Answer:

Explanation:

35.453 u

7 0
3 years ago
Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. What is the density
Anestetic [448]

Answer:

5.96 g/cm^3

Explanation:

Corner atom = 1/8

Atoms in center = 1

Atoms in face of the cube= 1/2  

Molar mass of V = 50.94 g/mol <em>(from period table)</em>

1 mole = 6.02x10^23

<em>In BCC unit cell:</em>

(8 x 1/8)+ 1=2 per 1 unit cell

<em>Mass: </em>2(50.94g)/6.02x10^23 = 1.69x10^-22 g/unit cell

305pm=(305x10^-12m÷10^-2m) x (1mL÷1cm^3)

           = 2.837 x 10^-23 mL

<em>1pm=10^-12m</em>

<em>1cm=10^-2m</em>

<em>1mL=1cm^3</em>

<em></em>

density=mass/volume

density of V = 1.69x10^-22g÷2.837x10^-23mL

                    =5.957g/mL

                    =5.96g/cm^3

5 0
2 years ago
Consider the following reaction at equilibrium: 2NH3 (g) N2 (g) + 3H2 (g) Le Châtelier's principle predicts that the moles of H2
Lilit [14]

Answer:

A decrease in the total volume of the reaction vessel (T constant)

Explanation:

  • Le Châtelier's principle predicts that the moles of H2 in the reaction container will increase with a decrease in the total volume of the reaction vessel.
  • <em><u>According to the Le Chatelier's principle, when a chnage is a applied to a system at equilibrium, then the equilibrium will shift in a way that counteracts the effect causing it.</u></em>
  • In this case, a decrease in volume means there is an increase in pressure, therefore the equilibrium will shift towards the side with the fewer number of moles of gas.
3 0
3 years ago
Using the metric "stairs" convert the following:
frosja888 [35]
Skuwel converter
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Hope it helps
6 0
2 years ago
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