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saul85 [17]
4 years ago
6

Goggles should be worn when using

Chemistry
1 answer:
ELEN [110]4 years ago
7 0

Answer:

D. either acid or fire

Explanation:

When doing an experiment with acid or fire, you do not want the substance to end up in your eyes. It is important you wear goggles to protect yourself.

I hope this helped and have a great day!

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PLEASE HELP!!!!!!!<br> WILL GIVE BRAINLIEST!!!!!<br> Describe a volcanic eruption.
Citrus2011 [14]

Answer:

A volcanic eruption occurs when molten rock, ash and steam pour through a vent in the earth's crust. Volcanoes are described as active (in eruption), dormant (not erupting at the present time), or extinct (having ceased eruption; no longer active).

Please mark as brainliest please

4 0
4 years ago
Utilizing dimensional analysis find the number of inches in a kilometer given that 1 inch equals 2.54 cm
hodyreva [135]
To solve this problem, separate it into chunks that you know. You know that there are 2.54 centimeters in 1 inch. You know that there are 100 centimeters in 1 meter. You know that there are 1000 meters in a kilometer. Therefore, we'll convert in this order: 1) from kilometers to meters, 2) from meters to centimeters, and 3) from centimeters to inches.
1) 1km × 1000m/1km
= 1000m
2) 1000m × 100cm/1m
= 100000cm
3) 100000cm × 1in/2.54cm
≈ 39370in
So, there are approximately 39370 inches in a kilometer.
4 0
4 years ago
What is 3O2 in science
andrew11 [14]

Answer:

carbon Suboxide

Explanation:

7 0
3 years ago
Calculate the percent errorin a length measurementof 4.45cm if the correct value is 4.06
FinnZ [79.3K]

Answer:

9.6 %

Explanation:

<u>Step 1: How to define  percent error ? </u>

⇒ % error is the difference between a measured value and the known or accepted value

⇒Percent error is calculated using the following formula:

⇒%error  =  | Experimental value-theoretical value/theoretical value |  x100%

⇔ this can be written as well as : error = (| Experimental value/ theoretical value | - | Theoretical value / Theoretical value | ) x100%

<u>Step 2: Calculate % error</u>

In this case, this means :

%error = ( |(4.45 cm - 4.06cm ) / 4.06cm | ) x100%

%error = 0.096 x100%

%error =9.6 %

3 0
3 years ago
A person who is + for the rh factor has what antigen
Marina CMI [18]

Answer:

Explanation:

 Most blood types are determined by red cell antigens that differ by one or two amino acids, the Rh positive blood group contains the D antigen

I hope this was helpful, please mark as brainliest

8 0
3 years ago
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