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
asambeis [7]
3 years ago
15

If you place a weighing boat (0.229 g) on the balance, hit the tare/zero button, weigh 0.678 g of NaCl, then remove everything f

rom the balance, then the balance will read ________.
Chemistry
2 answers:
Elis [28]3 years ago
8 0

Answer:

-0.229 g

Explanation:

Given that:

the mass of the weighing boat = 0.229 g

The mass of the balance and the weighing boat w₁ = 0.229 g

After it hit the tare/zero button

The mass of the balance and the weighing boat w₂ = 0.000 g; &

the mass of NaCl w₃ = 0.678 g

If we remove all the components from the balance; the balance will read:

= 0.000 g- 0.229g

= -0.229 g

ZanzabumX [31]3 years ago
6 0

Answer:

The weighing balance will read  New weight = -0.229

Explanation:

From the question we are told that

    The mass of the boat is  m =  0.229 g

    The mass of the NaCl is  m_1  =  0.678 \  g

Generally what the tare/zero button does is to set the reading of the weighing balance to zero , so

       when this button is pressed the balance reads zero  , now when the NaCl is placed on the balance , it reads 0.678 g , now when both the weighing boat and NaCl (i.e everything) is removed , the balance reads

    -0.229  g

The reason for this is , when the weighing boat was on the weighing balance , the tare / zero button was pressed , which made the balance to assume the weighing boat as  part of it make up hence the zero reading on the balance now when it is then removed the balance now performs a calculation like this

     New weight =  0 -  mass of the boat

=>   New weight =  0 - 0.229  

=>   New weight = -0.229  g

You might be interested in
An acid has an acid dissociation constant of 2.8 10–9. What is the base dissociation constant of its conjugate base?
Neporo4naja [7]
The answer is 3.6 x 10^-6
6 0
3 years ago
Read 2 more answers
Warm air _____.
svp [43]

Answer:

cools as it rises, then sinks back down

Explanation:

The movement of air is a convection current. Convection currents occur when warm air rises, cools down, and sinks due to gained density, replacing the warm air closer to the ground, creating a cycle.

5 0
3 years ago
Explain what a chromosome is in your own words.
Alex787 [66]
It’s a structure of nucleic acids and protein that can be found in the nucleus; it carries genetic information through genes
7 0
3 years ago
Read 2 more answers
A foce that pushes or pulls is known as​
Radda [10]

Answer:

Newton 3rd Law of Motion or the Law of Force Pairs

(An applied force)

3 0
3 years ago
A reaction mixture initially contains 0.140 MCO and 0.140 MH2O. What will be the equilibrium concentration of CO?
Allushta [10]

Answer:

0.013 M

Explanation:

From the question, we can make the following deductions; we are given mixture that contains two compounds, that is A and B, 0.140 M CO and 0.140 M H2O respectively. Then, we are asked to find the equilibrium concentration of Carbonmonoxide,CO.

So, the equation for the reaction is given below;

CO + H2O <-----------------> CO2 + H2.

Initially: we have 0.14M of CO, 0.14M of H2O and zero (0) concentration of CO2 and H2.

At time,t = CO =0.14 - x , H2O = 0.14 - x, CO2 and H2 = x.

The above reaction consist of the forward reaction and the backward reaction.

Therefore, the equilibrium Concentration of CO;

(Since we are giving that Kc = 102). Then, Kc=  [CO2][H2] ÷ [CO][H2O]. Where Kc is the equilibrium constant.

Therefore, 102 = [x^2] / [0.14 - x]^2.

==> 10.1= x/0.14 - x.

====> 0.141 - 10.1 x = x.

x + 10.1 x = 0.141.

===> 11.1 x = 0.141.

===> x = 0.141 ÷ 11.1.

===> x = 0.127 M .

Then, at time,t CO = 0.14 - x.

= 0.14 - 0.127 = 0.013 M

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the formula and name of the compound formed between na+ and o2-
    8·1 answer
  • If 1.00 g of a hydrocarbon is combusted and found to produce 3.14 g of co2, what is the empirical formula of the hydrocarbon?
    11·1 answer
  • The answer ........................... ..
    6·1 answer
  • What is the Noble gas notation for mercury (Hg)?.
    13·1 answer
  • YOU DO:
    11·1 answer
  • The lead pipe has a mass of 200 g, how much will be left after 6 months?
    8·1 answer
  • Pls help
    15·1 answer
  • 3. Which best describes the definition for the atomic mass of an element?
    13·1 answer
  • Which of the following best describes the bonding found within Al2O3?
    12·1 answer
  • Which sentence describes the energy changes that occur when a chemical reaction happens?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!