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
faust18 [17]
3 years ago
12

Table salt is 42.7% sodium how many grams of salt contain 76 g of sodium

Chemistry
1 answer:
Alexeev081 [22]3 years ago
3 0

Answer:

Số gam muối ăn cần là 76:42,7%=177,986 g

Explanation:

You might be interested in
Which statements accurately describe volume? Check all that apply. Volume is a physical property of an object. Volume is measure
Alex17521 [72]

Answer:

- Volume is a physical property of an object.

- One unit of volume is the milliliter.

- Liquids and solids have constant volumes.

Explanation:

5 0
3 years ago
Read 2 more answers
The density of an unknown gas at 98°C and 740 mmHg is 2.50 g/L. What is the molar mass of the gas with work showed?
noname [10]

Answer:

78.2 g/mol  

Step-by-step explanation:

We can use the <em>Ideal Gas Law</em> to solve this problem:

       pV = nRT

Since n = m/M, the equation becomes

      pV = (m/M)RT     Multiply each side by M

   pVM = mRT               Divide each side by pV

        M = (mRT)/(pV)

Data:

ρ = 2.50 g/L

R = 0.082 16 L·atm·K⁻¹mol⁻¹

T =98 °C

p = 740 mmHg

Calculation:

(a)<em> Convert temperature to kelvins </em>

T = (98 + 273.15) = 371.15 K

(b) <em>Convert pressure to atmospheres </em>

p = 740 × 1/760 =0.9737 atm

(c) <em>Calculate the molar mass </em>

Assume V = 1 L.

   Then m = 2.50 g

            M = (2.50 × 0.082 06 × 371.15)/(0.9737 × 1)

                = 76.14/0.9737

                = 78.2 g/mol

3 0
3 years ago
Which stimulus causes a porcupine to extend its quills?
Andru [333]
The answer is threatening behavior by predators. Reason is that it is used as a self defense strategy.
3 0
3 years ago
How does the sharklet film protect against bacteria?
babunello [35]

Answer:

The sharklet film creates a phenomenon reffed to as  mechanotransduction.

Explanation:

It was discovered that sharks do not experience fouling , their skin is made in a distinct manner with diamond patterns that will discourage micro organism from settling on it.

Through the process of mechanotransduction, mechanical stress is created to the bacteria whereby they cannot attach themselves to the surface because it makes them to produce more energy to settle on the surface thus they may keep off from the surface. In this manner, bacteria is inhibited from attacking these areas protected by the sharklet film.

5 0
3 years ago
Si te comes un banano de 125 g, asumiendo que este es 100% potasio, calcula lo siguiente: Determina la cantidad de Kilocalorías
Bond [772]

Answer:

0.0179254 kilocalorías(0,0179254 kilocalorías.)

Explanation:

Paso 1

Encontramos la Energía Calórica del Plátano

Se nos dice que el plátano es 100% potasio, por lo tanto

Fórmula de energía térmica = MCΔT

Dónde

M = Masa de sustancia (gramos)

C = Calor específico (j / g ° c)

ΔT = Cambio de temperatura (Temperatura final - Temperatura inicial) (° C)

Masa de (plátano) potasio = 125g

Calor específico de potasio = 0,75j / g ° C

ΔT = Cambio de temperatura

= 37,3 ° C - 36,5 ° C

= 0,8 ° C

Calor específico del banano

Q = 125 g × 0,75j / g ° C × 0,8 ° C

Q = 75 julios

Por lo tanto, 125 gramos de potasio (plátano) contienen 75 julios de energía.

Paso 2

Convertimos Julios de energía en kilocalorías

1 julio = 0.000239006 kilocalorías

75 julios =

Cruz multiplicar

75 julios × 0.000239006 kilocalorías / 1 julio

= 0.0179254 kilocalorías.

Por tanto, 125 g de plátano contienen 0,0179254 kilocalorías.

3 0
3 years ago
Other questions:
  • Smog usually forms from gound-level ozone and what other human-made pollutant?
    10·2 answers
  • Unscramble dreor to get a science answer
    14·2 answers
  • Consider the reaction given below.
    9·1 answer
  • The chemical formula for diiodine nonaflouride
    7·1 answer
  • Which of the following solvent pairs could be used in a solvent pair recrystallization (in general, not for this specific reacti
    9·1 answer
  • Draw the condensed structural formula for 3-methyl-1-pentyne
    11·1 answer
  • Calculate the number of atoms of sodium in a 4.5-gram sample
    10·1 answer
  • Calculate no. Of moles in 329g of H2so4
    7·1 answer
  • A student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loo
    9·1 answer
  • chegg The value for the equilibrium constant for the following chemical reaction, the auto-ionization of water, is 1.0x10-14 at
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!