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
Evgesh-ka [11]
2 years ago
6

please help.. Which of the following events is most likely to cause an environmental disturbance in a grassland biome? A. Earthq

uake B.volcanic eruption C. hurricane D. fire caused by lightning
Chemistry
1 answer:
Vlad [161]2 years ago
5 0

Answer:

D. Fire caused by lightning

You might be interested in
Rolls of foil are 302 mm wide and 0.018 mm thick. (The density of foil is 2.7 g/cm3 .)
Kruka [31]

Answer:

The length of foil will be 8107.81 cm or 81.7081 m.

Explanation:

Given data:

Width of roll of foil = 302 mm

Height or thickness = 0.018 mm

Density of foil = 2.7 g/cm³

Mass of foil = 1.19 Kg

Length of foil = ?

Solution:

d = m/ v

v = length (l) × width (w) × height (h)

First of we will convert the Kg into gram and mm into cm.

one Kg = 1000 g

1.19 × 1000 = 1190 g

one cm = 10 mm

302 / 10 = 30.2 cm

0.018 / 10 =  0.0018 cm

Now we will put the values in formula:

d = m/ l× h× w

l = m / d × h× w

l = 1190 g / 2.7 g/cm³× 30.2 cm × 0.0018 cm

l = 1190 g/ 0.146772 g/cm

l = 8107.81 cm or 81.7081 m

3 0
3 years ago
Write a reaction to describe the behavior of the following substances in water. please include all phases.
lorasvet [3.4K]

3NF3 + 5H2O → HNO3 + 2NO + 9HF

Nitrogen fluoride reacts with water to produce nitric acid, nitric oxide, and hydrogen fluoride. The reaction slowly takes place in a boiling solution.

CH2CH2 + H2O → CH3CH2OH

Ethylene is a hydrocarbon with water that creates ethanol and ethanol is an alcohol

4 0
3 years ago
Given a stock standard solution of concentration 0.200 M, calculate the volume in mL required to make up calibration standards o
guapka [62]

M1V1 = M2V2

.200 (.025) = 1.60 X 10 -2 (V2)

V2 = .315 L

1.60 x 10-2 M  in 315 mL

6 0
3 years ago
If 5g of H2 are reacted with excess CO, how many grams of CH3OH are produced, based on a yield of 86%?
Cerrena [4.2K]

Answer: 34.4 g

Explanation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

\text{Number of moles of hydrogen}=\frac{5g}{2g/mol}=2.5moles

As CO is in excess, H_2 is the limiting reagent and thus it will limit the formation of products.

CO+2H_2\rightarrow CH_3OH

According to stoichiometry:

2 moles of hydrogen produce = 1 mole of CH_3OH

2.5 moles of hydrogen produce = \frac{1}{2}\times 2.5=1.25 moles of CH_3OH

Mass of CH_3OH=moles\times {\text {Molar mass}}=1.25\times 32=40g

But as % yield is 86%, mass of CH_3OH produded is \frac{86}{100}\times 40=34.4g

Thus 34.4 g of CH_3OH is produced.

6 0
3 years ago
Determine whether each of the following cations is acidic or pH-neutral.
riadik2000 [5.3K]

Answer:

1. Acidic

2.Acidic

3, Acidic

All are acidic

5 0
3 years ago
Other questions:
  • How would you test a colorless crystalline compound to determine if it was a hydrate?
    11·1 answer
  • For chemistry purposes we will always measure delta Ts (temperature changes) with which scale?
    6·1 answer
  • What is the difference in height between the top surface of the glycerin and the top surface of the alcohol? Suppose that the de
    12·1 answer
  • Plzz some one tell me tha objection 5 6 points to kekule formula
    7·1 answer
  • You analyze two substances in the laboratory and discover that each has the empirical formula CH2O. You can easily see that they
    13·1 answer
  • From the attitude Douglass expresses in the passage,
    5·2 answers
  • I need help on this one to I don't know it
    7·1 answer
  • Please help! its science im stuck between two answers
    14·2 answers
  • Calculate the answer. Express it in scientific notation. All answers should have the correct number of significant figures.
    14·2 answers
  • By titration, it is found that 73.3 mL of 0.175 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentrati
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!