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
Ira Lisetskai [31]
3 years ago
6

2 Points

Chemistry
2 answers:
Free_Kalibri [48]3 years ago
6 0

Answer:

c

Explanation:

c is the correct answer. hope it helps

MAVERICK [17]3 years ago
5 0

Answer:

C. Chemicals can keep bread fresher longer

Explanation:

C is the right answer because the question is asking for a positive characteristic of chemicals to help make our lives easier. The other options are negative characteristics but C is the positive one therefore its the right answer that you're looking for :) Also, it conveys to us that chemicals can not only do bad things, but good things as well :')

You might be interested in
Identify the number and kinds of atoms present in a molecule of each compound. caffeine c8h10n4o2 iron iii sulfate fe2(so4)3
finlep [7]
This problem is very easy to answer. You simply have to look at the subscripts of each element of the compound.

1. For caffeine, which has a molecular formula of C₈H₁₀N₄O₂, it contains 8 atoms of Carbon, 10 atoms of Hydrogen, 4 atoms of Nitrogen and 2 atoms of Oxygen.

2. For Iron(III) Sulfate, which has a molecular formula of Fe₂(SO₄)₃, it contains 2 atoms of Iron, 3 atoms of Sulfur, and 12 atoms of Oxygen.
6 0
3 years ago
Can I please Get Help with this question ‍♂️ ?
Nitella [24]

Answer:

Mg(NO4)2 is 180.3 g/mol

Explanation:

First find the substance formula.

Magnesium Nitrate.

Magnesium is a +2 charge.

Nitrate is a -1 charge.

So to balance the chemical formula,

We need 1 magnesium atom for every nitrate atom.

2(1) + 1(-2) = 0

So the substance formula is Mg(NO4)2.

Now find the molar mass of Mg(NO4)2.

Mg = 24.3 amu

N = 14.0 amu

O = 16.0 amu

They are three nitrogen and twelve oxygen atoms.

So you do this: 24.3 + 14.0(2) + 16.0(8) = 180.3 g/mol

So the molar is mass is 180.3 g/mol.

The final answer is Mg(NO4)2 is 180.3 g/mol

Hope it helped!

7 0
3 years ago
Calculate the empirical formula for DCBN, given that the percent composition is 48.9%C, 1.76%H, 41.2%Cl, and 8.15%N.
sweet [91]

Answer:

empirical formula is C7H3NCl2

Explanation:

too much work too explain and im lazy

5 0
3 years ago
When a 120 g sample of aluminum absorbs 9612 of heat energy, its temperature increases from 25°C to 115°C. Find the specific hea
lesantik [10]
<h3>Answer:</h3>

0.89 J/g°C

<h3>Explanation:</h3>

Concept tested: Quantity of heat

We are given;

  • Mass of the aluminium sample is 120 g
  • Quantity of heat absorbed by aluminium sample is 9612 g
  • Change in temperature, ΔT = 115°C - 25°C

                                                      = 90°C

We are required to calculate the specific heat capacity;

  • We need to know that the quantity of heat absorbed is calculated by the product of mass, specific heat capacity and change in temperature.

That is;

Q = m × c × ΔT

  • Therefore, rearranging the formula we can calculate the specific heat capacity of Aluminium.

Specific heat capacity, c = Q ÷ mΔT

                                         = 9612 J ÷ (120 g × 90°C)

                                         = 0.89 J/g°C

Therefore, the specific heat capacity of Aluminium is  0.89 J/g°C

4 0
3 years ago
Which of the following is a compound that contains 2 different elements?
AfilCa [17]
Chlorine is the correct answer so A
7 0
3 years ago
Other questions:
  • Given that one cup = 257.6 mL, calculate the molarity of vitamin C in orange juice.
    13·1 answer
  • Consider the voltaic cellZn(s) + Cu{2+}(aq)--&gt; Zn{2+}(aq)+Cu(s){}=chargeUnder standard conditions, what is the maximum electr
    11·1 answer
  • HELP ASAP PLZZZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·2 answers
  • Find the molecular weight of CO
    9·2 answers
  • How are clouds formed? Simple answer please!
    13·2 answers
  • What is the mass of 2.2 moles of magnesium chloride? With work shown
    14·2 answers
  • I need help please ASAP
    8·1 answer
  • (7.6 x 104m) x (1.5 x 107m)
    14·2 answers
  • PLZ HELP ASAP
    8·1 answer
  • Can someone help me with these questions?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!