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
AfilCa [17]
2 years ago
7

Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describe

s inappropriate lab safety?
He changes into closed-toed shoes before lab starts.
He doesn’t wear goggles because he is using household chemicals.
He asks his teacher if he can mix high- and low-pH solutions before discarding them.
He leaves his workstation to identify all of the safety equipment in the lab.
Chemistry
2 answers:
Oksana_A [137]2 years ago
4 0

The correct answer is B. He doesn’t wear goggles because he is using household chemicals.

Explanation:

Carrying out experiments especially those that imply substances such as chemicals implies following practices to guarantee safety. Because of this, in the lab you should use special clothes this includes goggles and gloves; you should clean and decontaminate your station; avoid eating, drinking or smoking and always ask your teacher for any step or procedure. This implies, the inappropriate action is "He doesn’t wear goggles because he is using household chemicals", because protection should be used all the time as even substance we use every day can be dangerous if you are closely exposed to them or if they are mixed with others.

NNADVOKAT [17]2 years ago
3 0

The correct answer is A.

You might be interested in
Convert 1.76 um to inches
Bond [772]

Answer:0.6929

Explanation:

4 0
2 years ago
What is the most reactive metal on the periodic table?
8_murik_8 [283]
CAESIUM is the most reactive metal............
8 0
3 years ago
Indigenous rocks form by the cooling and hardening of melted rock.* True False​
salantis [7]

Answer: True

Explanation: They are formed by the cooling and hardening of molten magma

3 0
3 years ago
Aqueous acetic acid is neutralized by aqueous barium hydroxide. express your answer as a balanced molecular equation. identify a
Studentka2010 [4]

The balanced molecular equation for the given reaction is:

2CH_3COOH(aq) \ + \ Ba(OH)_2(aq) \rightarrow \ Ba(CH_3COO)_2(aq) + 2H_2O(l).

<h3>FURTHER EXPLANATION</h3>

To check that the equation is balanced count how many atoms are present for each element in the reactant and product side. If they are the same before and after reaction for all elements, then the reaction is deemed balanced.

The atom counting for the equation is shown below:

2CH_3COOH(aq) \ + \ Ba(OH)_2(aq) \rightarrow \ Ba(CH_3COO)_2(aq) + 2H_2O(l).

<u>Reactants </u>                  →                 <u>Products</u>

C:  (2 x 2) =4                                  C: (2 x 2) = 4

H: (2 x 4) + (1 x 2) =10                    H: (3 x 2) + (2 X 2) = 10

O: (2 x 2) + (1 x 2) = 6                    O: (2 x 2) + (2 x 1) = 6

Ba: 1                                               Ba: 1

Since the number of atoms of each element are similar in the reactants and products, the equation is balanced.

To determine the state of the substances, consider their solubility.

The reactants are both aqueous (aq) as indicated in the problem.

The first product, Ba(CH_3COO)_2 is aqueous (aq) because based on the solubility rule, it will dissolve in water. Acetates are generally soluble.

The other product is water which will be liquid (l) since it is the solvent used to dissolve the substances.

<h3>LEARN MORE</h3>
  • Solubility Rules brainly.com/question/12984314
  • Net Ionic Equation brainly.com/question/12980075

Keywords: acid-base, neutralization, balancing equations, molecular equation

7 0
3 years ago
Read 2 more answers
What are the benefits and drawbacks to having a pouring temperature that is much higher than the metal’s melting temperature?
Mashcka [7]

Answer:

The main advantage would be that with the pouring temperature being much higher, there is very little chance that the metal will solidify in the mould while busy pouring. This will allow for moulds that are quite intricate to still be fully filled. The drawbacks, though, include an increased chance defects forming which relates to shrinkage (cold shots, shrinkage pores, etc). Another drawback includes entrained air being present, due to the viscosity of the metal being low because of the high pouring temperature.

3 0
2 years ago
Other questions:
  • Describe how the behavior of the bees can be used to model the states of matter. Include the behavior and spacing of particles i
    12·1 answer
  • Which of the following accurately describes carbon atoms?
    7·1 answer
  • What is the significance of an electronegativity difference of 1.7 between 2 atoms?
    11·2 answers
  • Why do we increase the surface area of a solid when dissolving?
    15·1 answer
  • (Lewis Dot Structures):
    14·1 answer
  • WILL GIVE BRAINLEST PLZZZ HELP DUE IN 20 MINS ANSWER IF U CAN HELP BTW THERES A Q JUST LIKE THIS ONE ITS IN MY PROFILE IT GIVES
    6·1 answer
  • Are nerve fibers very thin true or false?
    11·1 answer
  • Scientist classify orgasms into different groups based on what (science)
    6·1 answer
  • How much energy in Joules, does 80 (g) grams of water at an initial temperature of 40°C need to absorb to have its temperature r
    13·2 answers
  • A student used a Vernier magnetic field sensor to measure the strength of the magnetic field generated by a bar magnet. At which
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!