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
forsale [732]
4 years ago
14

How much NH4Cl can you dissolve in 200 g of water at 90° to make a saturated solution?

Chemistry
1 answer:
Serjik [45]4 years ago
5 0

Im doing the test now  and i think it's 140. I dont really know how to use the chart and dont know if im correct or not, but Im assuming the "grams of solute per 100g H2O" means that at whatever corresponding point between the temperature and chemical line on the graph has 100g H2O. So if you find 90 degrees on the graph and go up to the NH4Cl line, your Y Axis will say 70. But since the "grams of solute per 100g H2O" this means to satisfy the requirements of having 200g of water, you must double the 70 to 140. (This is my best guess, just as lost as you but im trying)

You might be interested in
LOILO CIVILIANVEIV.<br> 4. The two new cells formed by mítosis are called
ikadub [295]

Mitosis is where the cell divides its previously-copied DNA and cytoplasm to make two new, identical daughter cells.

8 0
3 years ago
How does Earth's rotation affect ocean currents?
Tom [10]

Answer:

Our planet's rotation produces a force on all bodies moving relative to theEarth. ... The force, called the "Coriolis effect," causes the direction of winds and ocean currents to be deflected.

Explanation:

4 0
3 years ago
A 101.2 ml sample of 1.00 m naoh is mixed with 50.6 ml of 1.00 m h2so4 in a large styrofoam coffee cup; the cup is fitted with a
Murrr4er [49]

The enthalpy change of the reaction when sodium hydroxide and sulfuric acid react can be calculated using the mass of solution, temperature change, and specific heat of water.

The balanced chemical equation for the reaction can be represented as,

H_{2}SO_{4}(aq) + 2NaOH (aq) ----> Na_{2}SO_{4}(aq) + 2H_{2}O(l)

Given volume of the solution = 101.2 mL + 50.6 mL = 151.8 mL

Heat of the reaction, q = m C .ΔT

m is mass of the solution = 151.8 mL * \frac{1 g}{1 mL} = 151.8 g

C is the specific heat of solution = 4.18 \frac{J}{g. ^{0}C}

ΔT is the temperature change = 31.50^{0}C - 21.45^{0}C = 10.05^{0}C

q = 151.8 g (4.18 \frac{J}{g ^{0}C})(10.05^{0}C) = 6377 J

Moles of NaOH = 101.2 mL * \frac{1L}{1000 mL}*\frac{1.00 mol}{L} = 0.1012 mol NaOH

Moles of H_{2}SO_{4} = 50.6 mL * \frac{1 L}{1000 mL} * \frac{1.0 mol}{1 L} = 0.0506 mol H_{2}SO_{4}

Enthalpy of the reaction = \frac{6377 J*\frac{1kJ}{1000J}}{0.0506 mol} = 126 kJ/mol

5 0
3 years ago
Your feet get hot walking across a beach. which type of heat transfer is occurring from the sand to your feet?
Andrews [41]
The heat transfer just occurred is mainly conduction.

Conduction happens when two objects are in contact with each other. In the hotter object, the molecules and/or free electrons have a higher kinetic energy, thus they'll travel and collide into other molecules, resulting in spreading the energy to the other object.

The heat transfer happens until thermal equilibrium, where both objects have the same temperature and their molecules have the same kinetic energy rate. 

In addition, radiation is also happening since everything that has a higher temperature than the environment is a net emitter. They release electromagnetic waves that turn out to be radiation. These occur even without the presence of air.
5 0
3 years ago
Calculate in gramm the mass of 0.1 mole of hydrochloric acid(h=1 ,cl=35.5)​
babunello [35]

Answer:

mass of HCl = 3.65 g

Explanation:

Data Given:

Moles of hydrochloric acid HCl = 0.1 mole

Mass in grams of hydrochloric acid HCl = ?

Solution:

Mole Formula

                  no. of moles = Mass in grams / molar mass

To find Mass in grams rearrange the above Formula

                Mass in grams = no. of moles x molar mass . . . . . . . (1)

Molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Put values in equation 1

              Mass in grams = 0.1 mole x 36.5 g/mol

              Mass in grams = 3.65 g

mass of HCl = 3.65 g

6 0
3 years ago
Other questions:
  • List five physical properties?
    13·2 answers
  • Predict the sign for AS for each of the following systems: Water freezing Water evaporating Crystalline urea dissolving Assembly
    7·1 answer
  • What is the melting point of gallium?
    12·2 answers
  • The first step in the free radical mechanism for the preparation of polyethylene is:
    14·1 answer
  • What are diatomic molecules and are they compounds? PLEASE ANSWER ASAP!!
    14·1 answer
  • In this equilibrium, hydroxide ion acts as a A) Lewis base B) Bronsted base C) both A &amp; B D) neither A or B
    12·1 answer
  • Type the correct answer in the box. Spell all words correctly. What is cogeneration? Cogeneration is a process of producing elec
    13·1 answer
  • Identify the state of matter in between C&amp;D.
    9·1 answer
  • Is this correct? ...​
    10·1 answer
  • How many kilojoules of heat
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!