What is the total number of moles of solute in 0.7 liters of a 4.4 M solution of NaCl

What is the correct noble gas configuration for sr?

Mariana [72]

Sr has an atomic number of 38 so we'll start there.

The closest noble gas is Kr with an atomic number of 36 so it'll look like this:

[Kr]5s^2.

3 0

3 years ago

A horse was 6,200 meters north of a barn. For 22.5 minutes, the horse ran toward the barn at 152 meters per minute. In that time

lutik1710 [3]

3420‬m

Explanation:

Given parameters:

Length of path = 6200m

time taken for the horse to run = 22.5min

speed = 152meters/minute

Unknown:

Distance run by the horse = ?

Solution:

Speed is the rate of change of distance with time.

Speed = $\frac{distance}{time}$

Distance = speed x time

Distance = 152 x 22.5 = 3420‬m

learn more:

Speed brainly.com/question/5424148

#learnwithBrainly

6 0

3 years ago

The different plants and animals in an environment. what is the answer for this meaning

Verdich [7]

Answer:

biodiversity

Explanation:

6 0

2 years ago

Remodeling a kitchen to add additional cabinets to existing ones also means adding extra support. In a similar respect, bone rem

krok68 [10]

Answer:

Calcium (Ca²⁺)

Explanation:

Calcium is very important mineral, found in teeth and bones primarily.

It is needed for the strong bones.

It is very important to maintain the bones in order to support our skeleton.

In our body it is also important to carry out other functions like in muscles, nerve function and also for heart.

If our diet is not full of calcium, the calcium deficiency may occur which leads to the weakening of bones and cause fracture.

The dietary source of calcium includes:

Yogurt, cheese, milk

beans such as peas, peanuts.

fishes

almonds, oranges, molasses

5 0

2 years ago

Draw the resonance structures for (SCN)".

Phantasy [73]

Answer : The resonance structure of $SCN$ is shown below.

Explanation :

Resonance structure : It is defined as when more than one Lewis structure can be drawn, the molecule or ion is said to have resonance.

Resonance is the concept where electrons (bonds) are delocalized over three or more atoms which cannot be depicted with one simple Lewis structure.

First we have to draw Lewis-dot structure.

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $SCN$

As we know that sulfur has '6' valence electrons, carbon has '6' valence electrons and nitrogen has '5' valence electron.

Therefore, the total number of valence electrons in $SCN$ = 6 + 4 + 5 = 15

According to Lewis-dot structure, there are 7 number of bonding electrons and 8 number of non-bonding electrons.

In SCN, carbon atom is the central atom and sulfur and nitrogen are the neighboring atoms.

The resonance structure of $SCN$ is shown below.

3 0

3 years ago