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
ahrayia [7]
4 years ago
5

When a warm air mass and a cold air masses meet but they push at each other and neither one can move (at a stand off) it’s calle

d a?
Chemistry
1 answer:
Tom [10]4 years ago
8 0
This is called a Cold Front.
You might be interested in
Which is a true statement?
labwork [276]

Answer: B) Particles can be filtered from a suspension.

Explanation: Colloids are solutions with particle size intermediate between true solutions and suspensions. They exhibit tyndall effect that is scattering of light.

Suspensions have large sized particles which settle when left undisturbed for sometime and thus can be filtered off easily.

The particle size in colloids is less and hence they do not settle under the effect of gravity.

A solution can be homogeneous in which the composition is uniform or heterogeneous in which is the composition is not uniform.


7 0
3 years ago
Read 2 more answers
How many hydrogen bonds are between cytosine and guanine
Dahasolnce [82]

Answer:

3

Explanation:

5 0
3 years ago
Read 2 more answers
Each year over _______ new organic compounds are produced.
antoniya [11.8K]
Each​ year over 100,000 new organic compounds are produce
7 0
3 years ago
Read 2 more answers
A solution was made by dissolving 5.10 mg of hemoglobin in water to give a final volume of 1.00 ml. the osmotic pressure of this
Assoli18 [71]

The molecular weight of hemoglobin can be calculated using osmotic pressure

Osmotic pressure is a colligative property and it depends on molarity as

πV = nRT

where

π = osmotic pressure

V = volume = 1mL = 0.001 L

n = moles

R = gas constant = 0.0821 L atm / mol K

T = temperature = 25°C = 25 + 273 K = 298 K

Putting values we will get value of moles

moles=\frac{\pi V}{RT}=\frac{0.00195X0.001}{0.0821X298}mol

we know that

moles=\frac{mass}{molarmass}

Therefore

molarmass=\frac{mass}{moles}=\frac{5.10X10^{-3}g}{7.97X10^{-8}}=6.399X10^{4}g

5 0
3 years ago
The equilibrium constant for the gas phase reaction N2 (g) + O2 (g) ⇌ 2NO (g) is Keq = 4.20 ⋅ 10-31 at 30 °C. At equilibrium, __
pychu [463]

Answer:

At equilibrium, reactants predominate.

Explanation:

For every reaction, the equilibrium constant is defined as the ratio between the concentration of products and reactants. Thus, for the reaction N2 (g) + O2 (g) ⇌ 2NO the expression of its equilibrium constant is:

Keq = \frac{[NO]^{2}}{[O_{2} ][N_{2}]}

Since the equilibrium constant is Keq = 4.20x10-31 the concentration of reactants O2 and N2 must be much higher than products to obtain such a small number as  4.20x10-31 at the equilibrium. Hence, at equilibrium reactants predominate.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Question 5 Multiple Choice Worth 4 points)
    10·1 answer
  • The darkest part of the moon’s shadow is called the penumbra?
    12·2 answers
  • Which reaction is not characteristic of an acid a)it dissolves magnesium oxide b) it produces ammonia from ammonium compounds c)
    10·1 answer
  • Why might a major volcanic eruption lead to cooler temperatures of Earth's surface?
    5·1 answer
  • The outside temperature is 35C, what is the temperature in K? K=274.15+ c.
    6·1 answer
  • Given the Punnett Square above, with Y=dominant yellow allele and y= recessive green allele, what is the probability of an offsp
    12·1 answer
  • Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation.
    15·1 answer
  • The student then takes a 1.00M stock solution of table sugar (sucrose C12H22O11) and mixes 0.305L of stock solution with additio
    12·1 answer
  • What is the molecular formula for a compound with an Empirical formula of C2H3, if the true Molar Mass is 81 g/mol:
    9·1 answer
  • How many grams are in 0.787 moles of kcn
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!