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
kaheart [24]
3 years ago
8

Write the following number correct to 2 significant figures: 3644000 Hurry Plz NO TIME!!!

Chemistry
2 answers:
Nadusha1986 [10]3 years ago
8 0
3644000 rounded to 2 significant figures is equivalent to 3.6
Yuri [45]3 years ago
7 0

Answer:

if it's a percent form then the answer will be

66%

3%

88%

Explanation:

You might be interested in
Calculate the molar solubility of fe(oh)2 in pure water. (the value of ksp for fe(oh)2 is 4.87×10−17.)
rosijanka [135]
When we have this balanced equation for a reaction:
Fe(OH)2(s) ↔ Fe+2  + 2OH-

when Fe(OH)2 give 1 mole of Fe+2 & 2 mol of OH-
so we can assume [Fe+2] = X and [OH-] = 2 X
 when Ksp = [Fe+2][OH-]^2
and have Ksp = 4.87x10^-17 
[Fe+2]= X
[OH-] = 2X
so by substitution 
4.87x10^-17 = X*(2X)^2
∴X^3 = 4.8x10^-17 / 4
∴the molar solubility X = 2.3x10^-6 M
3 0
3 years ago
Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy ch
vlabodo [156]
In order to solve this, we need to make use of Hess' Law.

We are already given the equations and their corresponding deltaH. Using Hess' Law, we can generate this equation:
104 kJ = x - (-1182 kJ) - (-1144 kJ)

Among the choices, the answer is
<span>B.104 = x - [(-1182) + (-1144)] 
</span>
3 0
3 years ago
Read 2 more answers
If 16.29 grams of Na2SO4 is mixed with 3.697 grams of C and allowed to react according to the balanced equation: Na2SO4(aq) + 4
abruzzese [7]

<u>Answer:</u> The limiting reagent in the given chemical reaction is carbon metal.

<u>Explanation:</u>

Excess reagent is defined as the reagent which is present in large amount in a chemical reaction.

Limiting reagent is defined as the reagent which is present in small amount in a chemical reaction. Formation of product depends on the limiting reagent.

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

  • <u>For sodium sulfate:</u>

Given mass of sodium sulfate = 16.29 g

Molar mass of sodium sulfate = 142 g/mol

Putting values in equation 1, we get:

\text{Moles of sodium sulfate}=\frac{16.29g}{142g/mol}=0.115mol

  • <u>For carbon:</u>

Given mass of carbon = 3.697 g

Molar mass of carbon = 12 g/mol

Putting values in equation 1, we get:

\text{Moles of carbon}=\frac{3.697g}{12g/mol}=0.31mol

For the given chemical reaction:

Na_2SO_4(aq.)+4C(s)\rightarrow Na_2S(s)+4CO(g)

By Stoichiometry of the reaction:

4 moles of carbon reacts with 1 mole of sodium sulfate

So, 0.31 moles of carbon will react with = \frac{1}{4}\times 0.31=0.0775mol of sodium sulfate

As, given amount of sodium sulfate is more than the required amount. So, it is considered as an excess reagent.

Thus, carbon metal is considered as a limiting reagent because it limits the formation of product.

Hence, the limiting reagent in the given chemical reaction is carbon metal.

4 0
3 years ago
What would be the Name of a Chemical made of 14 g Lithium, 32 g Sulfur, and 64 g Oxygen?
bulgar [2K]

The name of the chemical made of 14 g Lithium or 2 moles Lithium, 32 g Sulfur or 1 mol sulfur and 64 g oxygen or 4 moles of oxygen is Lithium sulfate. From the chemical reation:

<span>2Li + S + 4O > Li2SO4</span>
7 0
3 years ago
Butanoic acid + 2 propanol
Anuta_ua [19.1K]

Answer:

Butanoic acid and 2-propanol reacts to form isopropyl butyrate.

Explanation:

brainliest plz

4 0
3 years ago
Other questions:
  • A topaz crystal has an interplanar spacing (d) of 1.36 Å (1 Å =1×10^[−10] m). Calculate the wavelength of the X-ray that should
    14·1 answer
  • The following characteristics describe which of these terms? The substance is uniform in appearance and each part of the mixture
    11·1 answer
  • Atoms join together to form compounds by gaining losing or sharing
    15·2 answers
  • The yeast acted as a catalyst. Explain the purpose of a catalyst in a reaction
    15·1 answer
  • What are the exceptions to the periodic trends in ionization energy?
    8·1 answer
  • What are the positions of the sun, moon, and Earth relative to each other when we have stronger tides?
    6·1 answer
  • Which of the following is an example of velocity
    6·1 answer
  • What is a physical characteristic of an organism
    9·2 answers
  • ____ is the study of a reactions progress over a period of time.
    7·2 answers
  • Cho chất a gồm fe và oxi.Biết oxi chiếm 30%khối lượng.Tìm công thức hoá học của a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!