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3 years ago

Is HF soluble in water

Chemistry

1 answer:

makkiz [27]3 years ago

6 0

Answer:

On google it says this: HF will be the most soluble in water. Substances which form hydrogen bonding with polar water molecules are soluble in water. F has the highest electronegativity amongst other halogens.

Idk maybe A?

Explanation:

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1) Your nephew rides a kiddy train at the local carnival. The train, which has

katrin [286]

<h3>Answer:</h3>

Velocity is 1 m/s

<h3>Explanation:</h3>

<u>We are given;</u>

Mass of the kiddy train is 1000 kg
Radius of the curve is 5.0 m
Centripetal force is 2000 N

We are required to determine the maximum speed of the train.

Centripetal force refers to the force experienced by an object in a circular motion towards the center of a circular path.
It is calculated by the formula;

$Fc=\frac{Mv^{2} }{r}$ , where m is the mass, v is the velocity and r is the radius of the circular path.

Therefore, using the formula we can find the maximum speed.

Rearranging the formula;

$v=\sqrt{\frac{Fc.r}{m} }$

Therefore;

$v=\sqrt{\frac{(2000N)(5.0m)}{1000kg} }$

$v=\sqrt{1}$

$v=1m/s$

Therefore, the maximum speed of the train is 1 m/s

6 0

3 years ago

Is heat being released or absorbed physical or chemical changes

Vikki [24]

chemical

Explanation:

not sure about it

4 0

3 years ago

Read 2 more answers

Does the biosphere have clear boundaries

Ne4ueva [31]

No, the biosphere does not exhibit a clear boundary as life always comes to an end.

The biosphere comprises all the living things of the world, like all the plants and animals. It is considered as the global ecosystem, that is, the gathering of all the planet's ecosystems. It comprises the land and the atmosphere. It is usually considered as the zone of life, where all the species of the planet thrives.

7 0

3 years ago

Hydrazine reacts with oxygen according to the following equation: N2H4(g) +O2(g) → N2(g) + 2 H2O(l) How many L of N2, measured a

mihalych1998 [28]

Answer:

V ≈ 646.50 L

General Formulas and Concepts:

<u>Chemistry - Gas Laws</u>

Reading a Periodic Table
Stoichiometry
Combined Gas Law: PV = nRT
R constant - 62.4 (L · torr)/(mol · K)
Kelvin Conversion: K = °C + 273.15

Explanation:

<u>Step 1: Define</u>

RxN: N₂H₄ (g) + O₂ (g) → N₂ (g) + 2H₂O (l)

Given: 34.9 °C, 755.08 torr, 914.894 g H₂O

<u>Step 2: Identify Conversions</u>

Kelvin Conversion

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

<u>Step 3: Convert</u>

Stoichiometry: $914.894 \ g \ H_2O(\frac{1 \ mol \ H_2O}{18.02 \ g \ H_2O} )(\frac{1 \ mol \ N_2}{2 \ mol \ H_2O} )$ = 25.3955 mol N₂

Temperature: 34.9 + 273.15 = 308.05 K

<u>Step 4: Find Volume</u>

Substitute variables: (755.08 torr)V = (25.3955 mol)(62.4 (L · torr)/(mol · K))(308.05 K)
Multiply: (755.08 torr)V = 488160 L · torr
Isolate <em>V</em>: V = 646.502 L

<u>Step 5: Check</u>

<em>We are given 5 sig figs as our lowest. Follow sig fig rules and round.</em>

646.502 L ≈ 646.50 L

6 0

3 years ago

Barium chloride bea CO2 is a binary compound because it contains

Tpy6a [65]

Answer:

Because it contains only two elements.

Explanation:

A binary compound is a compound made up of only two elements. Barium chloride contains:

1. Barium.

2. Chlorine.

Since Barium chloride contains only two elements, it is therefore a binary compound.

6 0

3 years ago