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yuradex [85]
3 years ago
9

Write any two reasons that hydrogen is kept in group 1 ​

Chemistry
1 answer:
rodikova [14]3 years ago
6 0

Answer:

《HOPE IT WILL HELP YOU 》

Explanation:

(1) It resembal Alkali metel in some of properties

(2) it alos resemble as the Helogens in its properties

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Explain the water cycle in your own words. make sure u tell the steps in order
gregori [183]

Answer:

Collection - Evaporation - Condensation - Precipitation

Explanation:

The Water cycle is a series of continuous events that cause rain

7 0
2 years ago
how many moles of iodine should be added to 750 grams of carbon tetrachloride to prepare a 0.24 m solution
aleksley [76]

Answer:

0.18 mol

Explanation:

Given data

  • Mass of carbon tetrachloride (solvent): 750 g
  • Molality of the solution: 0.24 m
  • Moles of iodine (solute): ?

Step 1: Convert the mass of the solvent to kilograms

We will use the relationship 1 kg = 1,000 g.

750g \times \frac{1kg}{1,000g} =0.750kg

Step 2: Calculate the moles of the solute

The molality is equal to the moles of solute divided by the kilograms of solvent. Then,

m = \frac{moles\ of\ solute }{kilograms\ of\ solvent} \\moles\ of\ solute = m \times kilograms\ of\ solvent = \frac{0.24mol}{kg}  \times 0.750kg = 0.18 mol

6 0
3 years ago
Read 2 more answers
Consider the solutions, 0.04 m urea [(NH_2)_2C=O)], 0.04 m AgNO_3 and 0.04 m CaCl_2. Which has
kaheart [24]

Answer:

Explanation:

All the colligatives properties are modified by the Van't Hoff factor. This is shown as i, in the formula of the colligative properties freezing point depression, boiling point elevation, and osmotic pressure.

The Van't Hoff factor shows the number of particles into which the solute dissociates. In organic compounds we use 1, in inorganic compounds we have to think the dissociation. For example in aquous solutions, inorganic salts as AgNO₃ and CaCl₂ dissociate like this:

AgNO₃ →  Ag⁺  + NO₃⁻

CaCl₂  → Ca²⁺  +  2Cl⁻

AgNO₃ has 2 moles of ions and CaCl₂ has 3 moles.

In urea: i = 1

In  silver nitrate: i = 2

In calcium chloride: i = 3

The i = 3 for  calcium chloride, makes that this salt has the highest osmotic pressure, highest vapor pressure and highest boiling point.

8 0
3 years ago
What are centimeters,kilometers,and millimeters
Stells [14]
They are metric units of measurement.
4 0
3 years ago
The public is not yet able to purchase hydrogen fuel cell powered cars because engineers have to determine how the cars perform
muminat

The given question is incomplete the options of the compete are:

A. On racecar tracks

B. In real-world conditions

C. In flooded environments

D. On closed courses

Answer: In real world conditions.

Explanation:

Fuel cell vehicles use hydrogen has as a fuel in order to run the car. Unlike the other conventional vehicle that run on fossil fuels and gasoline.

The hydrogen and oxygen combines together in order to power the the motor in the car. The electricity produced by the combination of this runs the car and the waste product is water.

They are also called as electronic cars but the main problem is that it has not been yet tested in the real world. There are many more physiological conditions that differ from place to place in the real world conditions.

Firstly, the cars needs to be tested in the real world and see where there are any advantages and disadvantages over conventional vehicles.

Hence, it is not available to the general public for purchase.

8 0
3 years ago
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