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
Fantom [35]
3 years ago
10

HELPPPPPPPPPPP???????

Chemistry
1 answer:
svetoff [14.1K]3 years ago
7 0

Answer:

new moon

when the moon is front of the sun its a new moon

You might be interested in
A solution of ammonia has a pH of 11.8. What is the concentration of OH– ions in the solution?
Basile [38]

Answer:

The answer is 2.20 M

Explanation:

This is because ammonia has a pH of 11.8 and if you take 14-11.8 it equals 2.2 so the answer is 2.20 M

6 0
2 years ago
Read 2 more answers
The process that makes atmospheric nitrogen available to plants by mutualistic and free-living bacteria is called
artcher [175]
Nitrogen fixation is the process that makes atmospheric nitrogen available to plants by mutualistic and free-living bacteria. The process is undertaken by the rhizobium bacteria that live in root roots of plants such as legumes. The mutualistic relationship is that the plant supplies the bacteria with a habitat in which to live, water, and nutrients, and the bacteria supply nitrogen for making plant proteins. 
3 0
3 years ago
Using tongs place the 250 mL beaker on hot plate
LenKa [72]

Answer:

just use the tongs and put it on a plate

Explanation:

4 0
2 years ago
The empirical formula of an organic compound is C2H4O. The molecular mass of the compound is 176g/mol.
Brrunno [24]

Answer:

The molecular formula of the compound is C_{8}H_{16}O_{4}. The molecular formula is obtained by the following expression shown below

\textrm{Molecular formula }= n\times \textrm{Empirical formula}

Explanation:

Given molecular mass of the compound is 176 g/mol

Given empirical formula is  C_{2}H_{4}O

Atomic mass of carbon, hydrogen and oxygen are 12 u , 1 u and 16 u respectively.

Empirical formula mass of the compound = \left ( 2\times12+4+16 \right ) \textrm{ u} = 44 \textrm{ g/mol}

n = \displaystyle \frac{\textrm{Molecular formula mass}}{\textrm{Empirical formula mass}} \\n = \displaystyle \frac{176}{44} = 4

\textrm{Molecular formula }= n\times \textrm{Empirical formula}

Molecular formula = 4 \times C_{2}H_{4}O

Molecular formula is C_{8}H_{16}O_{4}

6 0
3 years ago
Chemical reactions are _____.
lana66690 [7]

Answer:

I think the answer is B)the processes in which molecules interact to form new subtances.

7 0
3 years ago
Other questions:
  • When humans plant more trees, carbon can begin entering the ________
    7·1 answer
  • Physics 130 Metal detectors, like the ones used at airports, are activated by a. electric fields. b. magnetic fields. c. electro
    5·1 answer
  • What is the mass, in grams, of solute in 255mL of a 0.0525M solution of KMnO4 (MM =
    15·1 answer
  • What are three observable changes that show a chemical reaction?
    6·1 answer
  • 16 Which change results in the formation of different substances?(1) burning of propane
    8·2 answers
  • Are there any plans for controlling or removing zebra mussel
    5·1 answer
  • A bird building a nest for its young is a reproductive strategy. Based on this example, what do you think the term “reproductive
    6·2 answers
  • How many mL. of 0.200 M Pb(NOs)2 solution are needed to obtain 0.875 grams of Pb(NO:)2?
    11·1 answer
  • I will give brainliest and 76 points
    14·1 answer
  • The concentrations of hydrogen ion in two solutions are (a).1×10-4moldm and (b).5×10-9moldm. What is the pH of each solutions?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!