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
stira [4]
3 years ago
5

Tell whether the statement is TRUE or FALSE. This symbol means every element is in both sets (A ⊆ B).

Chemistry
1 answer:
Airida [17]3 years ago
4 0
True
This statement is read as "A is a subset of B" which means that all elements contained in set A are a part of set B.
You might be interested in
Chloroform is a liquid once used for anesthetic. What is the volume of 5.0 g of chloroform? The density of chloroform 1.49 g/mL
mario62 [17]

Answer:

3.3557047 mL

Explanation:

The density can be found using the following formula:

d=\frac{m}{v}

Let's rearrange the formula to find the volume, v.

d*v=\frac{m}{v}*v

d*v=m

\frac{d*v}{d} =\frac{m}{d}

v=\frac{m}{d}

The volume can be found by dividing the mass by the density. The mass of the chloroform is 5 grams and the density is 1.49 grams per milliliter. Therefore,

m= 5g \\d= 1.49 g/mL

Substitute the values into the formula.

v=\frac{5g}{1.49 g/mL}

Divide. When we divide, the grams, or g, in the numerator and denominator will cancel out.

v= \frac{5}{1.49}mL

v=3.3557047 mL

The volume of 5 grams of chloroform is 3.3557047 milliliters

4 0
3 years ago
There are three bulbs powered by a battery. What will happen if the middle light burns out.
Vadim26 [7]

Answer:

nuclear war ;P

Explanation:

8 0
3 years ago
Hydrofluoric acid, hf(aq), cannot be stored in glass bottles because compounds called silicates in the glass are attacked by the
Trava [24]
1) Chemical equation

Na2 SiO3 (s) + 8 HF (aq) ---> H2 Si F6 (aq) + 2 Na F (aq) + 3H2O (l)

It is balanced

2) Molar ratios

1 mol Na2 SiO3 : 8 mol HF.

3) Proportion

0.340 mol Na2 SiO3 * 8 mol HF / 1mol Na2SiO3 = 2.72 mol HF.

Answer: 2.72 mol HF

5 0
3 years ago
What element has three electrons in its 5d sublevel?
Sever21 [200]
C. Ta
Tantalum is an element with an atomic number of 63 and its electronic configuration is:
[Xe] 4f¹⁴ 5d³ 6s²
7 0
3 years ago
The energy pyramid represents energy flow in an African grassland. If there are 7,500
Evgesh-ka [11]

Answer: i need that answer to

Explanation:

3 0
3 years ago
Other questions:
  • What is an example of an organ A.pancreas B.blood C.insulin D.knee
    13·2 answers
  • A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. the sterilization tank contains
    15·1 answer
  • Rutherford's gold-foil experiments proved the existence of which of the following?
    7·2 answers
  • When the pH decreases from 6 to 3, the hydrogen ion, H+, increases by what?
    11·1 answer
  • What physical process changed the geological area and composition of the Earth's oceans shown in the two pictures below
    14·2 answers
  • And done! :)))))))))
    10·2 answers
  • The rate constant for the first-order decomposition at 45 °C of dinitrogen pentoxide, N2O5, dissolved in chloroform, CHCl3, is 6
    5·1 answer
  • Which missing item would complete this alpha decay reaction?<br><br> 257/100 Fm= ________+4/2He
    8·2 answers
  • Calculate the volume of 7 mol of hydrogen at stp
    8·1 answer
  • What is the change in oxidation number of bromine in the following re-dox reaction Cl 2 +2HBr 2HCl+Br 2 A -2;0 B) -1;0 C) 0: -1
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!