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Natali [406]
3 years ago
6

Which of the following measurements (of different masses) is the most precise? A 6.2000g B 6.000000g C 6.24400g D 6.24444g

Chemistry
1 answer:
babymother [125]3 years ago
7 0

Answer:

B

Explanation:

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Convert the scientific notation to a decimal number. Type the correct answer in the box. 4 × 10-5 cm = cm
MakcuM [25]

Answer:

4 * 10^{-5}cm = 0.00004cm

Explanation:

Given

4 * 10^{-5}cm = [\ ]cm

Required

Solve

Apply law of indices

4 * \frac{1}{10^5}cm = [\ ]cm

Evaluate 10^5

4 * \frac{1}{100000}cm = [\ ]cm

4 * 0.00001cm = [\ ]cm

0.00004cm = [\ ]cm

Hence:

4 * 10^{-5}cm = 0.00004cm

3 0
3 years ago
If a mixture containing 0.50 moles of N2 and 1.8 moles of H2 is allowed to react according to the equation N2 3H2 2NH3 Group of
Lelechka [254]

Answer: hydrogen is the limiting reactant.

Explanation:

We have the equation \text{N}_{2}+3\text{H}_{2} \longrightarrow 2\text{NH}_{3}.

This means that for every mole of nitrogen consumed, 3 moles of hydrogen are consumed.

  • Considering the nitrogen, the reaction can occur 0.50 times.
  • Considering the hydrogen, the reaction can occur 1.8/3 = 0.6 times.

Therefore, <u>hydrogen</u> is the limiting reactant.

7 0
2 years ago
Which of the following statements is true? Radiation is the transfer of heat between objects which are not touching. An insulato
Licemer1 [7]

Answer:

Radiation is the transfer of heat between objects which are not touching. I think

Explanation:

3 0
2 years ago
Please help me with this question<br> Thank you!
Elza [17]

Answer:

B. 3+

Explanation:

When Fe²⁺ loses an electron, it becomes an Fe³⁺ ion.

   The loss of an electron in an atom makes the atom becomes positively charged. Further losing electrons makes the atom more positive.

 For the given ion;

 Fe²⁺   if it loses an electron more, it becomes Fe³⁺.

The expression is given as:

         Fe²⁺    →    Fe³⁺  +  e⁻

8 0
3 years ago
A student performs an experiment to determine the melting point of ice in order to investigate the strength of electrostatic for
andrezito [222]

Once the student has finished his experiment, additional steps he may take are to analyze the data gathered and draw a conclusion, then publish his findings to be seen by his peers (other students).

<h3 /><h3>What comes after the experiment?</h3>
  • Once an experiment is concluded, one must go over the data gathered.
  • By this, we mean to analyze the information obtained through the experiment.
  • This allows the student to draw a conclusion backed by evidence.
  • Once complete, it is wise to share and discuss the findings with peers.

Therefore, we can confirm that once the experiment is completed, the most common action that follows is to draw a conclusion based on the analysis of the data gathered during the experiment, then discuss the findings with peers.

To learn more about experiments visit:

brainly.com/question/9199868?referrer=searchResults

4 0
2 years ago
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