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
aleksandrvk [35]
3 years ago
5

Convert 9.90km to mm

Chemistry
1 answer:
sukhopar [10]3 years ago
3 0

Answer:

9900000

add 20 LeTtErS or mOrE

You might be interested in
Increase food supplies in an ecosystem decrease competition because the competing organsims would
irga5000 [103]
The competing organisms would eventually outnumber the competition
6 0
3 years ago
Difference between fission and fusion?
algol13
The difference is the following: Fission is when a heavy nucleus is very unstable and is splitted into two lighter nuclei. Fusion is in a sense the contrary process: two light nuclei combine and release more energy
4 0
4 years ago
What is the pH of a buffer solution that is 0.211 M in hypochlorous acid (HClO) and 0.111 M in sodium hypochlorite? The Ka of hy
arsen [322]

Answer:

c. 7.14

Explanation:

The buffer solution is formed by a weak acid ( hypochlorous acid, HClO) and its conjugate base (hypochlorite ClO⁻, coming from sodium hypochlorite NaClO). We can calculate the pH using the Henderson-Hasselbach equation.

pH = pKa + log [base]/[acid]

pH = -log 3.8 × 10⁻⁸ + log 0.111/0.211

pH = 7.14

7 0
3 years ago
Some atoms are chemically stable and will not bond with atoms of other
tigry1 [53]

Answer:

The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.

Explanation:

7 0
3 years ago
Read 2 more answers
A chemist added hydrochloric acid to a sample of baking soda in a beaker. Immediately, the mixture of the two chemicals began to
tester [92]

Answer: B

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Jill is studying the temperature output of an ammonium chloride hand warmer with a calorimeter. What change should she expect to
    10·1 answer
  • HURRY ⚠️<br> How many Chlorine atoms in 2HCI?<br> Hiw many Hydrogen atoms are in 2HCl?
    12·2 answers
  • Determine the number of electrons, neutrons and protons in an atom of arsenic -75.
    14·1 answer
  • Calculate the ph and the poh of an aqueous solution that is 0.030 m in hcl(aq) and 0.070 m in hbr(aq) at 25°c.
    14·1 answer
  • Draw the Lewis structure for the trisulfur molecule. Be sure to include all resonance structures that satisfy the octet rule.
    11·1 answer
  • When lithium (Li) is mixed with magnesium oxide (MgO), a single replacement reaction occurs. What will be the product or product
    7·1 answer
  • Dissolving 5.28 g of an impure sample of calcium carbonate in hydrochloric acid produced 1.14 l of carbon dioxide at 20.0 °c an
    9·1 answer
  • A 50.0 g sample of liquid water at 0.0°c ends up as ice at -20.0°c. How much energy is involved in this change.
    11·1 answer
  • Consider the hydrocarbon below. 2 carbons are double-bonded to each other; the pair are single bonded to h above left, above rig
    11·1 answer
  • Which chemical equations show an oxidation- reduction reaction
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!