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ASHA 777 [7]
3 years ago
4

Rachel's helping her younger brother replace a broken part in his toy ambulance this part is responsible for converting electric

energy into light energy which of these devices should they use for the replacement bulb B buzzer C motor D switch
Chemistry
2 answers:
Murrr4er [49]3 years ago
6 0
Option C is your answer
Brums [2.3K]3 years ago
5 0

C a motor. A wouldn't work since the bulb isn't the thing that is broken. B wouldn't work because what would the buzzer do? buzz. not convert the electrical energy. D wouldn't work unless you found something to connect the switch to. C is the only answer that makes sense to me.

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Wine goes bad soon after opening because the ethanol in it reacts with oxygen gas from the air to form water and acetic acid , t
Fynjy0 [20]

Answer:

7.00 g

Explanation:

There is some information missing. I think this is the complete question:

<em>Wine goes bad soon after opening because the ethanol CH₃CH₂OH in it reacts with oxygen gas O₂ from the air to form water H₂O and acetic acid CH₃COOH, the main ingredient of vinegar. What mass of ethanol is consumed by the reaction of 4.86g of oxygen gas? Round your answer to 3 significant digits.</em>

<em />

First, we have to write the balanced equation.

CH₃CH₂OH + O₂ ⇒  CH₃COOH + H₂O

Then, we can establish the following relations:

  • The molar mass of O₂ is 32.0 g/mol
  • The molar ratio of O₂ to CH₃CH₂OH is 1:1
  • The molar mass of ethanol is 46.1 g/mol.

The mass of ethanol that reacts with 4.86 g of oxygen is:

4.86gO_{2}.\frac{1molO_{2}}{32.0gO_{2}} .\frac{1molEt}{1molO_{2}} .\frac{46.1gEt}{1molEt} =7.00gEt

4 0
3 years ago
PLEASE HELP URGENT!!!! 20 POINTS!!!!!
andrey2020 [161]

Explanation:

  • Bar Graph.
  • Segmented Bar Graph.
  • Column Graph.
  • Whiskers Graph (also called a Box Plot)
  • Frequency Graph (Frequency Table)
  • Cumulative Frequency Table.
  • Frequency Polygon.
  • Histogram.

BAR GRAPH

The bar graph is used to compare the items between different groups over time, bar graphs are used to measure the changes over a period of time, when the changes are larger, a bar graph is the best option to represent the data.

SEGMENTED BAR GRAPH

A segmented bar graph is used to compare two categories within a data set, the whole bar represents all the data within one category. Then, each bar is separated into parts (segments) that show the percentage of each part in the second category.

COLUMN GRAPH

A column graph summarizes categorical data by presenting parallel vertical bars with a height (and hence area) proportionate to specific quantities of data for each category, this type of graph can be useful in comparing two or more distributions of nominal- or ordinal-level data.

WHISKERS GRAPH

A box and whisker plot is a way of summarizing

a set of data measured on an interval scale, it is often used in explanatory data analysis, this type of graph is used to show the shape of the distribution, its central value, and its variability.

FREQUENCY GRAPH

Frequency tables, pie charts, and bar charts can be used to display the distribution of a single categorical variable,these displays show all possible values of the variable along with either the frequency (count) or relative frequency (percentage).

CUMULATIVE FREQUENCY GRAPH

Cumulative frequency is used to determine the number of observations that lie above (or below) a particular value in a data set, the cumulative frequency is calculated by adding each frequency from a frequency distribution table to the sum of its predecessors.

FREQUENCY POLYGON

A frequency polygon is a graphical form of representation of data, it is used to depict the shape of the data and to depict trends, It is usually drawn with the help of a histogram but can be drawn without it as well. Frequency polygons are a graphical device for understanding the shapes of distributions.

HISTOGRAM

A histogram is used to summarize discrete or continuous data, in other words, it provides a visual interpretation of numerical data by showing the number of data points that fall within a specified range of values (called “bins”). It is similar to a vertical bar graph.

5 0
3 years ago
Which common substance is an acid?
Gekata [30.6K]

Explanation:

vinegar or acetic acid is an acid

8 0
3 years ago
What is another name for a condensation reaction? what is another name for a condensation reaction? water formation catabolism d
gregori [183]
Condensation is a chemical reaction in which two molecules are combined together and as a product formed a large molecule. There is also loss of small molecules in the condensation reaction. And mostly the functional groups combined in the reaction.
The other name for a condensation reaction is dehydration. As there is loss of molecule in condensation reaction, when that molecule is water it is said to be dehydration.
3 0
4 years ago
Read 2 more answers
Which of the following are changing when a change of state is occurring?
Greeley [361]

Answer:

What are the options?

Explanation:

7 0
3 years ago
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