1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marishachu [46]
3 years ago
12

Which of the following elements would be in the same group or family?

Chemistry
1 answer:
diamong [38]3 years ago
8 0

Answer:

d

Explanation:

You might be interested in
The following data is given to find the formula of a Hydrate:
umka21 [38]

The masses can be found by substractions:

  • Mass of CaSO₄.H2O (hydrate):

16.05 g - 13.56 g = 2.49 g

  • Mass of CaSO₄ anhydrate:

15.07 g - 13.56 g = 1.51 g

  • The mass of water is equal to the difference between the mass of the hydrate and the mass of the anhydrate:

2.49 g - 1.51 g = 0.98 g

  • The percent of water is found by the formula:

massWater ÷ massHydrate * 100%

0.98 g ÷ 2.49 g * 100% = 39.36%

  • The mole of water is calculated using water's molecular weight (18g/mol):

0.98 g ÷ 18 g/mol = 0.054 mol water

  • A similar procedure is made for the mole of salt (CaSO₄ = 136.14 g/mol)

1.51 g ÷ 136.14 g/mol = 0.011 mol CaSO₄

  • The ratio of mole of water to mole of anhydrate is:

0.054 mol water / 0.011 mol CaSO₄ = 0.49

In other words the molecular formula for the hydrate salt is CaSO₄·0.5H₂O

3 0
3 years ago
Which is the best description of the chemical reaction shown here in aqueous solution? ch3ch2cooh (aq) ↔ ch3ch2coo- (aq) + h+ (a
AnnZ [28]
The given reaction: 
<span>ch3ch2cooh (aq) ↔ ch3ch2coo- (aq) + h+ (aq)
is called a reversible reaction.

This means that, the reaction does not reach an end point.
In this type of reactions, reactants react together to form products, while products combine together to form reactants.
So, the reaction proceeds in both direction forming both reactants and products.</span>
6 0
3 years ago
Read 2 more answers
Someone please help! Hurry
makkiz [27]
It’s b) Phototropism
4 0
3 years ago
Read 2 more answers
If the distance between London and New York is 3600 miles, how long would you
Tju [1.3M]

Answer:

3 hours

Explanation:

s=d/t

1200=3600/t

3600/1200=t

t=3

3 0
3 years ago
Molarity to percent by mass. Convert 1.672 mol/L MgCl2(aq) solution to percent by mass of MgCl2 in the solution. The solution de
nignag [31]

Answer:

\%m/m=14\%

Explanation:

Hello!

In this case, since the molarity of magnesium chloride (molar mass = 95.211 g/mol) is 1.672 mol/L and we know the density of the solution, we can first compute the concentration in g/L as shown below:

[MgCl_2]=1.672\frac{molMgCl_2}{L}*\frac{95.211gMgCl_2}{1molMgCl_2}=159.2\frac{gMgCl_2}{L}

Next, since the density of the solution is 1.137 g/mL, we can compute the concentration in g/g as shown below:

[MgCl_2]=159.2\frac{gMgCl_2}{L}*\frac{1L}{1000mL}*\frac{1mL}{1.137g}=0.14

Which is also the by-mass fraction and in percent it turns out:

\%m/m=0.14*100\%\\\\\%m/m=14\%

Best regards!

6 0
3 years ago
Other questions:
  • For the oxidation-reduction reaction equation given here 4ga+p4 indicate how many electrons are transferred in the formation of
    10·1 answer
  • What is the oxidation number for ba??
    9·1 answer
  • Can you tell whether a substance is a mixture, compound, or element
    8·1 answer
  • Which of the following are ionic, and which are molecular? (a) Sc2O3 ionic molecular (b) NaI ionic molecular (c) SCl2 ionic mole
    7·1 answer
  • 26. If a saturated solution of AgNO3 at 20°C contains 216 g AgNO3 per 100.0 g of water, what mass of water could
    9·1 answer
  • What is the equation adheres to the law of conservation of matter
    7·1 answer
  • Which of the following does not serve as a way to neutralize the charge in a body?
    14·1 answer
  • Which of the following describes what scientists expect to happen every time under certain conditions?
    6·1 answer
  • Predict the ELECTRON and MOLECULAR geometry for a molecule with 5 bonding domains and two lone pairs.
    9·1 answer
  • yesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesvyesyesyesy
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!