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siniylev [52]
3 years ago
14

What is the last step in the Scientific method?

Chemistry
2 answers:
rosijanka [135]3 years ago
4 0
The last step in conclusion.
AURORKA [14]3 years ago
4 0
No it’s not it’s repeat
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Please help on this one?
Bezzdna [24]

Answer:

\text{C. } _{36}^{85}\text{Kr}

Explanation:

Your nuclear equation is  

_{35}^{85}\text{Br} \longrightarrow \, _{-1}^{0}\text{e} +\, _{x}^{y}\text{X}

The main point to remember in balancing nuclear equations is that

  • the sum of the superscripts and must be the same on each side of the equation.
  • the sum of the subscripts must be the same on each side of the equation.  

Then  

85 = 0 + y, so y = 85 - 0 = 0  

35 = -1 + x, so x = 35 + 1 = 36

The nucleus with atomic number 36 and atomic mass 85 is krypton-85.  

The nuclear equation becomes  

_{35}^{85}\text{Br} \longrightarrow \, _{-1}^{0}\text{e} + \, _{36}^{85}\text{Kr}

4 0
3 years ago
Read 2 more answers
The _______ of a wave is a measure of the amount of energy it carries
Bumek [7]
The word that best fits is frequency. The sentence is The frequency of a wave is a measure of the amount of energy it carries. There is a direct relationship between frequency and energy of a wave. The constant of proportionality is h, Planck's constant. So, Energy = h * frequency. So, the answer is frequency.<span> Although you should know that wavelength is related to frequency and so it is also a measure of the amount of energy and it should also be other valid answer.</span>
6 0
3 years ago
You push your friend up the street with a force of 200N. How much work did you do if you traveled 15m?
VARVARA [1.3K]

Answer:

3000J

Explanation:

Formula: Work = Force × Distance

Solution: Work = 200N × 15m

Answer = 3000N/m or 3000J

4 0
2 years ago
How to make vape oil from scratch for a vape pen
Julli [10]
If you’ve been vaping for a while now, you may be craving some new vape juice flavors to try with your favorite RDA, RTA, or Box Mod.

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Surely there must be a better way than taking out payday loans to get your hands on that Peanut Butter Crunch-flavored creation you just have to have in your sub-ohm tank?

Fortunately, when you know how to make homemade vape juice it can be a fun and fascinating hobby that has the delightful side effect of saving you loads of cash using cheap vape juice.

Many people hear “diy vape juice” and get visions of a mad scientist in a dank lab constantly flirting with explosion by mixing volatile chemicals while laughing insanely.

The reality is that it’s relatively easy to learn how to make your own vape juice at home, and we’re going to attempt to cover all the facets involved.

Are you interested in making your own e juice?
3 0
3 years ago
Read 2 more answers
What is the concentration of ammonia in a solution if 23.4 mL of a 0.117 M solution of HCl are needed to titrate a 100.0 mL samp
Georgia [21]

Answer: 0.0274 M

Explanation:-

The balanced chemical solution is:

NH_4OH(aq)+HCl(aq)\rightarrow NH_4Cl(aq)+H_2O(l)

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

M_1 = molarity of HCl solution = 0.117 M

V_1 = volume of HCl solution = 23.4 ml

M_2 = molarity of NH_4OH solution = ?

V_2 = volume of NH_4OH solution = 100.0 ml

n_1 = valency of HCl = 1

n_2 = valency of NH_4OH = 1

1\times 0.117M\times 23.4=1\times M_2\times 100.0

M_2=0.0274

Therefore, the concentration of ammonia in a solution will be 0.0274 M

8 0
3 years ago
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