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Lina20 [59]
2 years ago
10

9th grade...Chemistry help needed​

Chemistry
1 answer:
Pavel [41]2 years ago
7 0

Answer:

1). Scientific

2). Plating the diluted bacteria on media that supports the growth of only living micro organisms. Statistically accurate.

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A glow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produ
mina [271]

A glow stick will glow longer at lower temperatures than at room temperature, one can infer from the observation. Temperature and reaction time are the test variables.

We notice in this reaction that a glow stick stored in the freezer lights for a longer period of time than a glow stick stored at normal temperature. This implies that temperature affects how long a response lasts.

The most straightforward explanation for this observation is that glow sticks glow longer in colder temperatures than they do at room temperature; as a result, glow sticks kept in the freezer are observed to glow longer than glow sticks kept at room temperature.

To learn more about chemicals to the given link:

brainly.com/question/24600141

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6 0
2 years ago
3. How many moles of NaCl are present in 6000. La 1.5 M NaCl solution?
Leno4ka [110]

Answer:

Option A (9.0) is the correct alternative.

Explanation:

The given values are:

Molarity,

= 1.5 M

Volume,

= 6000 mL

or,

= 6 L

As we know,

⇒ Molarity=\frac{Moles}{Volume}

or,

⇒ The \ moles \ of \ NaCl=Molarity\times Volume

By putting the values, we get

                                     =1.5\times 6

                                     =9 \ mol

7 0
3 years ago
A packet of light energy is called a
larisa86 [58]
Packets of light energy are called photons. 
7 0
3 years ago
Read 2 more answers
When may a hypothesis be revised?
Mashutka [201]
When it has been disproven
3 0
3 years ago
What is 8(6x+4)=-112
iris [78.8K]

Answer:

x = -3

Explanation:

8(6x + 4) = -112

Divide both sides by 8.

6x + 4 = -14

Subtract 4 from both sides.

6x = -18

Divide both sides by 6.

x = -3

7 0
3 years ago
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