1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aniked [119]
3 years ago
10

Anna is excited about conducting her lab today. She takes out her lab sheet and reads over the lab. She goes and gathers all of

the lab materials. She follows each lab procedure step-by-step until she has completed the procedure and recorded all of the data she collected. Afterwards, Anna takes two of the substances and mixes them together to see what would happen. Which lab safety rule did Anna break?
Chemistry
1 answer:
trapecia [35]3 years ago
6 0

Answer:

Anna didn't wear a lab coat

Explanation:

The first thing anyone who is to carry out a procedure or an experiment in a lab needs to do when he/she enters a lab is to wear a lab coat. This is a lab safety rule that protects the individual from been affected by spillage that could occur as a result of the experiment been conducted.

From the narration in the question, <u>it is not stated anywhere that Anna wore a lab coat before embarking on her lab procedure</u>.

You might be interested in
What are two things plants have which animal cells do not
lyudmila [28]

Answer:

Animal cells don't have a dividing cell wall like plant cells do

Explanation:

Plants cells use photosynthesis from the sun, which requires them to have chloroplast filled with chlorophyll to complete this function; animal cells do not have chloroplasts

5 0
3 years ago
Read 2 more answers
Determine the basic oxidation<br>number for elements in s and p<br>orbitals​
Andrews [41]

Answer:

Explanation:

The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation (loss of electrons) of an atom in a chemical compound. Conceptually, the oxidation state, which may be positive, negative or zero, is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic, with no covalent component. This is never exactly true for real bonds.

The term oxidation was first used by Antoine Lavoisier to signify reaction of a substance with oxygen. Much later, it was realized that the substance, upon being oxidized, loses electrons, and the meaning was extended to include other reactions in which electrons are lost, regardless of whether oxygen was involved.

Helped?

Brainliest?

7 0
3 years ago
Suppose that 7.25 x 10^22 atoms of a hypothetical element have a mass of 3.88 g. What would be the molar mass (g/mol) of this el
S_A_V [24]

Answer:

32.23 to 4 significant figures.

Explanation:

The molar mass of the element is the mass of 6.022 * 10^23 atoms (Avogadro's number).

So by proportion it is 6.022 * 10^23 * 3.88 / 7.25 * 10^22

= 32.23 to 4 significant figures.

4 0
3 years ago
How to find how many atoms are in grams.
professor190 [17]

Explanation:

To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro's number: 6.02 x 10^23.

5 0
3 years ago
Do all electrodes make good canthodes and anodes? why or why not
Sedbober [7]

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit The word was coined by William Wheel at the request of the scientist Michael Faraday from the Greek words electron, meaning amber and hods, a way.

4 0
3 years ago
Other questions:
  • When mowing the lawn what greenhouse gas are you generating
    7·1 answer
  • What is the molarity of a solution containing 56 grams of solute in 959 mL of solution?
    15·1 answer
  • What do lines in an elements line spectrum represent?
    5·1 answer
  • What are the conditions needed for hydrogen to react with iodine
    13·1 answer
  • Help...is it Air??? Idk..
    11·1 answer
  • PLEASE HELP!! What is the percentage by mass of solution formed by dissolving 27.0 grams of HCl in 102.0 grams of water? 26.5% 2
    13·1 answer
  • How many grams of NaF form when .5 mol of HF reacts with excess Na2SiO3?
    12·1 answer
  • 1. A container holds four times as many moles of CO2 as O2. If the total pressure in the container is 20. atm,
    8·1 answer
  • What observation did Rutherford make from his gold-foil experiment which
    10·1 answer
  • a 4.4 g sample of gas occupies 2.24 l of volume at stp. without thinking too hard, what is the mw of the gas, and name two gases
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!