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statuscvo [17]
1 year ago
14

How much water must be added to 36.0 g of srcl2 to produce a solution that is 35.0 wt% srcl2? how much water must be added to 36

.0 of to produce a solution that is 35.0 wt% ? 48.6 g 66.9 g 103 g 97.2 g?
Chemistry
1 answer:
larisa86 [58]1 year ago
8 0
To solve this problem we will use the following equation:

w = (m of solute) / (m of solution)

w - percentage 

It is necessary to mention here that mass of solution is a sum of the mass of solute and mass of water.

<span>w = mass CaCl2/(mass of water + mass of CaCl2)
</span>
mass of water = x 

0.35 = 36 / (x + 36)

0.35 × (x + 36) = 36

0.35x + 12.6 = 36

0.35x = 23.4

x = 66.86 g of water is necessary




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Richard is teaching his son, Cody, to throw darts. At first, he gives Cody a piece of candy each time the dart hits the dartboar
Vlad1618 [11]

Answer:

Shaping

Explanation:

Shaping is a term used to describe the process where a response is stimulated through small rewards or punishments. In other words, shaping refers to a situation where a person is gradually trained to establish some kind of behavior or skill through small incentives. An example of this can be seen in the question above, where a parent shapes his child's aim by offering candy whenever he hits the target.

7 0
1 year ago
A gas mixture at 0°C and 1.0atm contains 0.010mol of H2, 0.015mol of O2, and 0.025mol of N2. Assuming ideal behavior, what is th
Olegator [25]

Answer:

PH₂ = 0.2 atm

C) About 0.20atm, because H2 comprises 20% of the total number of moles of gas.

Explanation:

To determine the partial pressure of hydrogen gas (H2) in the mixture,

Partial pressure H₂ = Ptotal * xH₂

xH₂ = Mole fraction of H₂ = ∩H₂ / ( ∩H₂ + ∩O₂ + ∩N₂)

xH₂ = 0.01 / (0.01 + 0.015 + 0.025)

xH₂ = 0.01/0.05

xH₂ = 0.2

therefore

PH₂ = pT * xH₂

PH₂ = 1.0 atm * 0.2

PH₂ = 0.2 atm

so the correct option is C)  About 0.20atm, because H2 comprises 20% of the total number of moles of gas.

7 0
2 years ago
In looking at the bolded atoms in the answer choices, which pair consists of molecules having the same geometry? view available
Molodets [167]
The pair which consist of molecules having the same geometry is CH2CCI2 and CH2CH2.
Both of these molecules contain double bonds, which has sp^2 hybridization and they possess a trigonal planar geometry. In trigonal planar geometry, the molecule consist of three equally spaced sp^2 hybrid orbitals, which arranged at angle 120 degree. 
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2 years ago
Two glasses labeled A and B contain equal amounts of water at different temperatures. Kim put an antacid tablet into each of the
skelet666 [1.2K]

Answer:

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Explanation:

Solubilities of solutes are enhanced when the temperature is increased.

From the experiment conducted,

It is evident that glass B temperature is higher than glass A temperature, because the solute dissolves faster in glass B than in glass A . This implies that glass A is cooler than glass B, hence the particles in A will move slower than that in B.

6 0
2 years ago
Read 2 more answers
Why is a ylid a stable nucleophile? Select all that apply. Group of answer choices The proximity of the positively charged phosp
pogonyaev

Answer:

1)The proximity of the positively charged phosphorous and negatively charged carbon stabilizes the charges.

2) Inductive effects and resonance stabilize the negative charge

Explanation:

both atoms have full octets of electrons( I.e Carbon and say phosphorus). The result can be viewed as a structure in which two adjacent atoms are connected by both a covalent and an ionic bond; normally written X+–Y−. Ylides are thus 1,2-dipolar compounds, and a subclass of zwitterions

6 0
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