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
Ludmilka [50]
3 years ago
15

Which values are written in proper scientific notation? Check all that apply. –350 –350.00 –3.50 × 104 0.000350 3.50 × 104 3.50

× 10–4 35.0 × 10–5 3,500
Chemistry
2 answers:
Oksanka [162]3 years ago
7 0
-3.50 * 10^4
3.50 * 10^4
3.50 * 10^-4
algol133 years ago
7 0

Answer : The correct options are, -3.50\times 10^{4},3.50\times 10^{4}\text{ and }3.50\times 10^{-4}

Explanation :

Scientific notation : The way or representation of expressing the number that are too big or too small that is written in the decimal form. That means always written in the power of 10 form.

For example : 700 is written in scientific notation as, 7.0\times 10^2

According to the question, -3.50\times 10^{4},3.50\times 10^{4}\text{ and }3.50\times 10^{-4}  are written in proper scientific notation. While the other options are not written in proper scientific notation.

Therefore, the correct options are, -3.50\times 10^{4},3.50\times 10^{4}\text{ and }3.50\times 10^{-4}

You might be interested in
Which of the following is not true of acids?
NeTakaya

Answer is: 2. dillute acids feel slipper.

1) Acids are corrosive is correct. For example hydrochloric acid (HCl) will react with most metals.

2) Dillute acids feel slippery is not correct. Bases, for example solution of sodium hydroxide feels slipery.

3) Acids have a distinctly sour taste is correct. For example, vinegar is mixture of acetic acid (CH₃COOH) and water (H₂O). Vinegar is colourless liquid with sour taste and pungent smell, freezing point of the vinegar is lower than glacial acetic acid.

4) Acids have more hydronium ions than hydroxide ions is correct. Because acid gives a lot of hydrogen cations (H⁺), pH (pH = -log[H⁺]) is lower than seven (acidic solution).

5 0
3 years ago
Explain what makes a covalently bonded molecule polar. Use the molecules of CH4 and CH3F as examples in your explanation.
RideAnS [48]

Answer:

See explanation

Explanation:

The magnitude of electronegativity difference between atoms in a bond determines whether that bond will be polar or not.

If the electronegativity difference between atoms in a bond is about 1.7, the bond is ionic. If the electronegativity difference is greater than 0.4 and less than 1.7, the bond will have a polar covalent character. Lastly, if the electronegativity difference between the bond is less than or equal to 0.4, the covalent bond is non polar.

The electronegativity difference between carbon and hydrogen is about 0.4 which corresponds to a nonpolar covalent bond hence the molecule is nonpolar.

The electronegativity difference between carbon and fluorine is about 1.5 indicating a highly polar bond. This gives CH3F an overall dipole moment thereby making the molecule polar.

8 0
2 years ago
When can polar bears take care of themselves
Viefleur [7K]
around the age of two they might start to kinda ''leave''(or venture) there parents

5 0
3 years ago
Which of the following are pure substances? (Select all that apply.)
riadik2000 [5.3K]
Elements and compounds are both examples of pure substances. Compounds are substances that are made up of more than one type of atom. Elements are the simplest substances made up of only one type of atom. i hope that helps:)
6 0
2 years ago
Help??
kvasek [131]

Answer:

Mass of sodium chloride decomposed = 24.54 g

Explanation:

Given data:

Mass of sodium chloride decomposed = ?

Mass of chlorine gas formed = 15 g

Solution:

Chemical equation:

2NaCl      →         2Na + Cl₂

Number of moles of Cl₂:

Number of moles = mass/molar mass

Number of moles = 15 g/ 71 g/mol

Number of moles = 0.21 mol

Now we will compare the moles of Cl₂ with NaCl from balance chemical equation.

                    Cl₂            :              NaCl

                      1              :                2

                      0.21         :            2×0.21 = 0.42 mol

Mass of Sodium chloride decompose:

Mass = number of moles × molar mass

Mass = 0.42 mol × 58.44 g/mol

Mass = 24.54 g

4 0
2 years ago
Other questions:
  • How many valence electrons does an iodine atom have
    12·1 answer
  • Which of the following equations violates the law of conservation of mass?. . 2Al + 6HCl----> 2AlCl3 + 3H2. . Na2C2O4 + Pb(NO
    12·1 answer
  • What volume will 1.12 moles of nitrogen gas occupy at STP
    7·1 answer
  • The standard cell potential, E°cell, for a reaction in which two electrons are transferred between the reactants is +1.33 V. Cal
    7·1 answer
  • what is the substances would be produced during the chemical reaction between potassium hydroxide and hydrochloric acid
    11·2 answers
  • 11.
    8·1 answer
  • Which of the following is a force? A. mass B. volume C. weight D. length
    14·2 answers
  • If the same large amount of heat is added to a 250 g piece of aluminum and a 150 g piece of aluminum, what will happen? The 150
    12·1 answer
  • Order the terms according to the path followed by oxygen during cellular respiration.​
    9·1 answer
  • If 38 gr of water are produced in reaction, how many mole are CO2 are produced.​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!