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
Nana76 [90]
3 years ago
15

Help me please!!!!!!!!

Chemistry
2 answers:
ale4655 [162]3 years ago
6 0

Answer:

that's a hard one

Explanation:

Mumz [18]3 years ago
5 0

Answer:Zn + 2 HCl => ZnCl2 + H2

Explanation: Zinc has 1 atom in the reactant and product side

2 atoms for H on both sides and 2 atoms of chlorine in the reactant and product side.

You might be interested in
What are some different ways large or small distance can be measured?
Lina20 [59]

Answer:

The method used for measuring the small distance is by using the scales and the distance measured over long distance is by inch tape or measuring tape.

Explanation:

3 0
3 years ago
The molar mass of a solid carboxylic acid is determined by titrating a known mass of the acid with a standardized solution of Na
laiz [17]

The answer is: II.The endpoint is recorded when the solution is dark red in color rather than light pink.

The endpoint is the point at which the indicator changes colour in a colourimetric titration and that is point when titration must stop.  

Phenolphthalein is colorless in acidic solutions and pink in basic solutions. If  this indicator change color to dark red, more base is added and endpoint is not accurate.

If the the acid is spilled before titration, that does not make endpoint wrong and molar mass can be calculated.

In this example we can take acetic acid as carboxylic acid; basic salt sodium acetate CH₃COONa is formed from the reaction between weak acid (in this example acetic acid CH₃COOH) and strong base (in this example sodium acetate NaOH).  

Balanced chemical reaction of acetic acid and sodium hydroxide:  

CH₃COOH(aq) + NaOH(aq) → CH₃COONa(aq) + H₂O(l).  

Neutralization is is reaction in which an acid (in this example vinegar or acetic acid CH₃COOH) and a base react quantitatively with each other.

8 0
3 years ago
For two variables in a direct proportion, what is the result of doubling one variable?
Airida [17]

Answer:

the other variable is also doubled

Explanation:

direct proportion, same thing has to happen to both variables

6 0
3 years ago
3. If we remember seeing something happen, we can trust that it happened just as we think it did. True or False​
djverab [1.8K]

\huge{ \underbrace{ \overbrace{True}}}

.

\huge\mathfrak\purple{Hope  \: it  \: helps}

Note : Because Many of My Dreams came true and I realized.

3 0
3 years ago
A sample of sulfur has a mass of 6,614g and a volume of 3.2 mL. What is the density of sulfur?
sergiy2304 [10]

Answer:

The answer is 34g/ml

Explanation:

6,614-3.2=34g/ml

7 0
3 years ago
Other questions:
  • Which of the following phase changes only occurs in solids possessing vapor pressures above atmospheric pressure and at ambient
    9·1 answer
  • Study the ions that contain the element chlorine. What are some similarities between the formulas for these ions?
    15·1 answer
  • Arrange these elements based on their atomic radii. ga, f, s, as
    6·1 answer
  • How can plants protect themselves? They produce salicylic acid. They become acidic. They release toxins. All of the above
    15·2 answers
  • Which of these statements best explains how fossil records provide evidence to the scientific theory of evolution?
    7·1 answer
  • Use the periodic table to identify the number of core electrons and the number of valence electrons in
    12·1 answer
  • Water expands when heated. Suppose a beaker of water is heated from 10℃ to 90℃. Does the pressure at the bottom of the beaker in
    7·1 answer
  • What effect would a decrease or increase in barometric pressure have on the boiling point
    15·1 answer
  • There is some gas in a container at pressure 136 atm. When 142 dm3 gas is released at pressure of 1 atm,then the pressure of the
    9·1 answer
  • Which of the following electronic transitions would emit the lowest energy photon?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!