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3 years ago

14

A scientific ________ must have a control, so that the variables that could affect the out come is reduced. A:experiment B:concl

usion. C:investigation. D:reasoning

1 answer:

Lostsunrise [7]3 years ago

4 0

Answer:

A.experiment

Explanation:

hope this helps

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3. True or False: White light is a mixture of all colors of the visible

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Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li(s) + N2(g) → 2Li3N(s) How many moles of lit

miss Akunina [59]

Answer:

12.5 g of Li are needed in order toproduce 0.60 moles of Li₃N

Explanation:

The reaction is:

6Li(s) + N₂(g) → 2Li₃N(s)

If nitrogen is in excess, the lithium is the limiting reactant.

Ratio is 2:6

2 moles of nitride were produced by 6 moles of Li

Then, 0.6 moles of nitride were produced by (0.6 .6)/ 2 = 1.8 moles of Li

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Which of the following was not a big ideal of chemistry

ikadub [295]

Answer:

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2 years ago

SOMEONE PLS HELP

Gekata [30.6K]

Answer:

<h2>464.85 mL</h2>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we're finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

100.7 kPa = 100,700 Pa

95.1 kPa = 95,100 Pa

We have

$V_2 = \frac{100700 \times 439}{95100} = \frac{44207300}{95100} \\ = 464.8506...$

We have the final answer as

<h3>464.85 mL</h3>

Hope this helps you

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3 years ago