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
ziro4ka [17]
2 years ago
10

Select all actions below that you must take to ensure laboratory safety during the experiment. Check all that apply

Chemistry
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

using test tube tongs to handle the hot test tubes

checking the beaker for chips prior to heating on the hot plate

turning off the hot plate after use

Explanation:

You might be interested in
Please help me out asap. I’ll give brainliest
mestny [16]

Answer:

I belive the answer is A but the image quality is hard to tell.

Explanation:

As pressure increases the higher the melting point of rock becomes making it harder to melt, thats why molten rocks brought to the surface melt because of the change in pressure.  

7 0
2 years ago
Could anyone help me with question 3?
Gwar [14]
Second one i think.......
3 0
3 years ago
What is the molar mass of citric acid (c6h8o7) and baking soda (nahco3)?
Rufina [12.5K]

The molar mass of citric acid (c6h8o7) is 192.124g/mol

The molar mass of baking soda (nahco3) is 84.007g/mol

The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample and is measured in moles. Molar mass is a mass property, not a molecular property of a substance.

Molar mass is the mass of 1 mole of the sample. To find the molar mass, add up the atomic masses (atomic weights) of all the atoms in the molecule. Use the masses listed in the periodic table or atomic weight table to determine the atomic mass of each element.

Learn more about molar mass here:brainly.com/question/15476873

#SPJ1

6 0
1 year ago
Read 2 more answers
The theoretical yield of Cl2 from certain starting amounts of MnO2 and HCl was calculated as 60.25 g and 65.02 g, respectively.
user100 [1]

Answer:

c    43.38 g

Explanation:

The reaction  between MnO2 and HCl can be represented by the following balanced equation:

MnO2 + HCl ---> Cl2 + MnCl2 + H2O

From the balanced equation, the theoretically required molar ratio of MnO2 to HCl is 1:1, therefore the yields would have been expected to be equal.  

For the fact that HCl  gives a higher yield (65.02g) than MnO2 (60.25g) according to the problem statement, HCl should be in excess,  while the limiting reagent should be MnO2 .  

Thus, the theoretical yield of Cl2 will be  60.25 g.

By definition, the percentage yield is given by

% Yield = (Actual Yield) / (Theoretical Yield),  

This can be simplified to

Actual Yield = % Yield * Theoretical Yield

Plugging in the given values we have

Actual Yield = 72% *  60.25 = 43.38 g

5 0
3 years ago
Given the following rate equation, complete the sentences to identify the reaction order for each reagent, the overall reaction
Eva8 [605]

Answer:

1. First

2. Third

3. Fourth

4.remain the same as

Explanation:

Given the reaction equation;

Rate= k[A] [B]^3

We can see that the order of reaction is first order with respect to reactant A and third order with respect to reactant B. This gives an overall fourth order reaction.

If the concentration of A is doubled and that of B is halved. The rate of reaction remains the same.

3 0
2 years ago
Other questions:
  • How many moles of O2 should be supplied to burn 1.82 mol of C3H8 (propane) molecules In a camping stove?
    6·1 answer
  • Calculate the energy needed to raise the temperature of 18.0g of water from 10.0C to 40.0C. The specific heat of water is 4.18 J
    11·1 answer
  • The concentrations of the products at equilibrium are [pcl3] = 0.180 m and [cl2] = 0.250 m. what is the concentration of the rea
    5·1 answer
  • What is the role of an organism in an community
    11·1 answer
  • What is the state of matter of bromine ?
    12·1 answer
  • Why is pure silicon a poor conductor at room temperature?
    7·1 answer
  • _Ba3Na2+<br> H2O +<br> Ba(OH)2 +<br> NH3<br> Balance this equation
    15·1 answer
  • In Ray Bradbury's 1953 novel Fahrenheit 451, 451°F is said to be the temperature at which books, which have been banned in the
    12·1 answer
  • *CHEMISTRY*
    5·2 answers
  • When 3.00 moles of hydrogen molecules and 1.50 moles of oxygen molecules react, they form 3.00 moles of water
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!