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
chubhunter [2.5K]
3 years ago
7

The answers please to this

Chemistry
1 answer:
Vlad1618 [11]3 years ago
5 0
I know for number 4 the answer is c, sorry I can't help with the others.
You might be interested in
LAB: predicting products
kondor19780726 [428]

Answer:

1) synthesis MgI2

2) double replacement CuS + (HCl)2

3) double replacement, not sure ab the formula sorry

4 0
2 years ago
An unknown compound is processed using elemental analysis and found to contain 117.4g of platinum 28.91 carbon and 33.71g nitrog
dlinn [17]

Answer:

1 mole of platinum

Explanation:

To obtain the number of mole(s) of platinum present, we need to determine the empirical formula for the compound.

The empirical formula for the compound can be obtained as follow:

Platinum (Pt) = 117.4 g

Carbon (C) = 28.91 g

Nitrogen (N) = 33.71 g

Divide by their molar mass

Pt = 117.4 / 195 = 0.602

C = 28.91 / 12 = 2.409

N = 33.71 / 14 = 2.408

Divide by the smallest

Pt = 0.602 / 0.602 = 1

C = 2.409 / 0.602 = 4

N = 2.408 / 0.602 = 4

The empirical formula for the compound is PtC₄N₄ => Pt(CN)₄

From the formula of the compound (i.e Pt(CN)₄), we can see clearly that the compound contains 1 mole of platinum.

8 0
3 years ago
The temperature of a sample of matter is a measure of the ?
Masteriza [31]
<span>Answer: the average kinetic energy of the particles.
</span><span />

<span>Jusitification:
</span><span />

<span>Temperature and heat energy are closely related.
</span><span />

<span>While heat is the kinetic energy of the particles of a substance which is transferred from a hotter substance to a cooler one, the temperature is a measure of the average kinetic energy of the particles in a substance.
</span><span />

<span>The relatively high kinetic energy the particles of a warm substance is transferred to the cooler one by the motion (vibration or translation) of the atoms of molecules. The energy transferred is heat energy.</span>
3 0
3 years ago
What is the density of an object that has a mass of 6.5 g and when placed in water displaces the volume from 4.5mL to 11.8mL? ro
KengaRu [80]

Answer:

\rho =0.9g/mL

Explanation:

Hello,

In this case, due to the volume displacement caused the by the object's submersion, it's volume is:

V=11.8mL-4.5mL=7.3 mL

In such a way, considering the mathematical definition of density, it turns out:

\rho =\frac{m}{V}=\frac{6.5g}{7.3mL}\\  \\\rho =0.89g/mL

Rounding to the nearest tenth we finally obtain:

\rho =0.9g/mL

Regards.

3 0
3 years ago
If a tablet containing 100 mg of caffeine (c8h10n4o2) is dissolved in water to give 10. 0 oz of solution, what is the molar conc
DedPeter [7]

Answer:

787.5 is a transversal of lines I and m that forms 8 and I have to use it to get the battery back from the battery and the other way around the world

Explanation:

Submitted to you and the other way around the world health organization and the other way around the world health organization and the other things that you can see in the equation is the solution of this given values 2a it is mathematical sentence which states that the two expressions of the interest will be the same reason that as they you are have an a

5 0
2 years ago
Other questions:
  • In general, ionization energy will
    12·2 answers
  • What does the law of conservation of matter/mass state
    13·2 answers
  • The minimum amount of methyl benzoate needed to trigger an alert for a drug dog is on the order of:
    10·1 answer
  • According to vsepr theory the molecular geometry for ch3+ is
    7·2 answers
  • I need help it is science agian
    13·1 answer
  • Convert 7.50 grams of glucose C6H12O6 to moles
    5·1 answer
  • What is the mass of one mole of titanium atoms
    11·1 answer
  • The pressure gauge on a compressed air tank reads 43.2 pounds per square inch (lb/in?). What is the
    14·1 answer
  • Consider the following processes:
    7·1 answer
  • What does acetic anhydride form when it reacts with water?​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!