All categories

4 years ago

A plane traveled west for 4.0 hours and covered a distance of 4,400 kilometers. What was its velocity?

Chemistry

2 answers:

aniked [119]4 years ago

6 0

Answer:

v = 1100km/hr

Explanation:

Velocity is the rate of change of position of an object and direction . velocity is a vector quantity. it has both magnitude and direction. Velocity indicates time, displacement and direction. The S.I unit of velocity is m/s. Other unit might be km/hr etc.

Velocity is the distance of an object divided by the time. Mathematically. it can be represented as

v = d/t

where v = velocity

d = distance

t = time

d = 4400km

t = 4 hrs

v = 4400/4

v = 1100km/hr

Softa [21]4 years ago

3 0

Answer:

1,100 km/h

Explanation:

Velocity = distance/time = 4,400 km / 4.0 h = 1,100 km/h

You might be interested in

Describe how desertification has impacted the quality of life of the people living in Southeast Asia?

kakasveta [241]

Alrighty, so, imagine you didn't or don't know much about desertification. You could imagine that it means the land becomes a desert. Knowing this I think it's easy to assume that desertification makes it harder for people in Southeast Asia to grow food or even build houses once their natural resources are destroyed from desertification.

5 0

4 years ago

Which statement correctly compares hydrogen bonding behavior in the gaseous, liquid and

Ivenika [448]

Answer:

B.brief in water vapor, fixed in liquid water, and nonexistent in ice crystals.

Explanation:

Water's States: Gas, Liquid, and Solid

In liquid water, hydrogen bonds are constantly formed and broken as the water molecules slide past each other. The breaking of these bonds is caused by the motion (kinetic energy) of the water molecules due to the heat contained in the system.

Hope It Helps You

5 0

3 years ago

Read 2 more answers

Since this reaction takes place in acidic solution, H2O(l) and H+(aq) will be involved in the reaction. Places for these species

maxonik [38]

Answer:

The balanced equation is given below:

SO4^2−(aq)+ Sn^2+(aq) + 4H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

The coefficients of the reactants are: 1, 1, 4

The coefficients of the products are: 1, 1, 1

Explanation:

Step 1:

The equation for the reaction. This is given below:

SO4^2−(aq)+ Sn^2+(aq) + –––→ H2SO3(aq)+ Sn^4+(aq) + –––

Step 2:

Inclusion of H+ and H2O into the equation. This is illustrated below:

SO4^2−(aq)+ Sn^2+(aq) + H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

Step 3:

Balancing the equation.

SO4^2−(aq)+ Sn^2+(aq) + H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

The above equation can be balanced as follow:

There are total 4 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 4 in front of H^+ as shown below:

SO4^2−(aq)+ Sn^2+(aq) + 4H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

Now the equation is balanced.

The coefficients of the reactants are: 1, 1, 4

The coefficients of the products are: 1, 1, 1

5 0

3 years ago

How many atoms are present in 179.0 g of iridium?

posledela

160 atoms are present

4 0

4 years ago

Read 2 more answers

A 0.539 g sample of a metal, M, reacts completely with sulfuric acid according to the reaction M(s)+H2SO4(aq)⟶MSO4(aq)+H2(g) A v

Charra [1.4K]

Answer:

The molar mass of the metal is 54.9 g/mol.

Explanation:

When we work with gases collected over water, the total pressure (atmospheric pressure) is equal to the sum of the vapor pressure of water and the pressure of the gas.

Patm = Pwater + PH₂

PH₂ = Patm - Pwater = 1.0079 bar - 0.03167 bar = 0.9762 bar

The pressure of H₂ is:

$0.9762bar.\frac{1atm}{1.013bar} =0.9637atm$

The absolute temperature is:

K = °C + 273 = 25°C + 273 = 298 K

We can calculate the moles of H₂ using the ideal gas equation.

$P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{0.9637atm \times 0.249L }{(0.08206atm.L/mol.K)\times298K} =9.81 \times 10^{-3} mol$

Let's consider the following balanced equation.

M(s) + H₂SO₄(aq) ⟶ MSO₄(aq) + H₂(g)

The molar ratio of M:H₂ is 1:1. So, 9.81 × 10⁻³ moles of M reacted. The molar mass of the metal is:

$\frac{0.539g}{9.81 \times 10^{-3} mol} =54.9g/mol$

4 0

4 years ago