Chemistry High School

Review the poster.

https://www.cdc.gov/handwashing/pdf/wash-your-hands-fact-sheet-508.pdf

What is the greatest advantage of using a poster to present the information in “Stop Germs! Wash Your Hands”?


A poster that features brief sentences conveys urgency and simplifies content.


The extensive detail in posters captures viewers and causes them to stop and read.


The colors and images of a poster often convey a stronger message than words.


A poster appeals to several senses at once, which makes it hard to ignore.

Answers

Answer 1

A. A poster that features brief sentences conveys urgency and simplifies content.

Related Questions

What would be the mass of 3 moles of water molecules?
a
54 grams
b 40 grams
C
30 grams
d 20 grams

Answers

Answer:

[tex]\boxed {\boxed {\sf A. \ 54 \ grams }}[/tex]

Explanation:

To convert from moles to grams, we must use the molar mass.

Recall that water's molecular formula is H₂O. It contains hydrogen and oxygen. Look up the two elements masses on the Periodic Table.

Hydrogen (H): 1.008 g/mol Oxygen (O): 15.999 g/mol

Now, use these masses to find water's mass. The subscript of 2 tells us there are 2 atoms of hydrogen, so we multiply hydrogen's mass by 2 and add oxygen's.

H₂O= 2(1.008 g/mol) + 15.999 g/mol = 18.015 g/mol

Use the molar mass as a ratio.

[tex]\frac{18.015 \ g \ H_2 O}{ 1 \ mol \ H_2 O}[/tex]

Multiply by the given number of moles.

[tex]3 \ mol \ H_2O*\frac{18.015 \ g \ H_2 O}{ 1 \ mol \ H_2 O}[/tex]

The moles of water will cancel.

[tex]3 *\frac{18.015 \ g \ H_2 O}{ 1 }[/tex]

[tex]3 *{18.015 \ g \ H_2 O}[/tex]

[tex]54.045 \ g \ H_2O[/tex]

Round to the nearest whole number. The 0 in the tenth place tells us to leave the number as is.

[tex]54 \ g \ H_2O[/tex]

There are about 54 grams of water in 3 moles.

Answer:

54 grams

Explanation:

First step is to find what one mole of water is in grams.

Water is H2O so that means we have two moles of Hydrogen.

H - 2 grams (on periodic table)

We have one mole of Oxygen.

O - 16 grams (on periodic table)

Add 2 and 16 to get 18 total grams in one molecule of H2O

Now multiply 3 times 18 to know how many grams in 3 moles of H2O

You end with

3x18=54 grams

How many moles of NaCl are in 2.35 liters of a 4.67 M solution?

Answers

There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

HOW TO CALCULATE NUMBER OF MOLES:The number of moles of a substance can be calculated by multiplying the molarity by the volume. That is;

no. of moles = volume × molarity

According to this question, there are 2.35 liters of a 4.67 M solution. The number of moles is calculated as follows:

no of moles = 2.35L × 4.67M

no of moles = 10.97mol

Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

Learn more about no. of moles at: https://brainly.com/question/14919968

which model of the atom is most accurate?

Answers

Answer:

it's the electron cloud model

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